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years ago in 1889 and opened three years later, it was the state's sole university for 71 years, until 1963. The university comprises ten undergraduate, graduate, and professional schools. It enrolls approximately 12,000 students across its campuses, with 11,000 on the Moscow campus. The university is classified among "R1: Very High Spending and Doctorate Production". Located on the rural Palouse, the university is represented in intercollegiate athletics by the Idaho Vandals, who compete in NCAA Division I, primarily in the Big Sky Conference.

igh Spending and Doctorate Production". Located on the rural Palouse, the university is represented in intercollegiate athletics by the Idaho Vandals, who compete in NCAA Division I, primarily in the Big Sky Conference.

The University of Idaho is home to more than two dozen (multicultural) Greek organizations that make up more than 20% of the student population. Over 44% of the students who live on campus are involved in Greek life. Fraternity and Sorority Life at University of Idaho includes 35 Greek-letter organizations within Multicultural Greek Council, Interfraternity Council and Panhellenic Council. Each chapter offers a supportive community that helps students navigate the college experience together. Athletics The Idaho Vandals are the intercollegiate athletic teams representing the University of Idaho. The Vandals compete at the NCAA Division I level as a member of the Big Sky Conference. The university's official colors are silver and gold, honoring the state's mining tradition. Because these metallic colors in tandem are not visually complementary for athletic uniforms, black and gold are the prevalent colors for the athletic teams, with an occasional use of silver. When Idaho moved out of the Big Sky to the Big West in 1996, the yellow "Green Bay" gold was changed to metallic "Vegas" gold. Yellow gold and black were the colors used by most of the varsity teams from 1978 to 1996, initiated by first-year head football coach Jerry Davitch's new uniforms for 1978. The Kibbie Dome is the home of the Idaho Vandals for four sports (football, tennis, indoor track and field, soccer).

, coined the name "Treasure Valley" in 1959 to reflect the treasure chest of resources and opportunities that the region offered. The valley has a very diverse terrain, from sage flatlands, to mesas, agricultural areas, and urbanized areas. As the Boise Metropolitan Area grows, more and more undeveloped and agricultural land is being urbanized. History Settling the region The tribes that roamed the area, specifically, were the Northern Paiute and Shoshone. In 1834, Thomas McKay built the original Fort Boise, in the area near present-day Parma, which was run for a time by Francois Payette. It later was moved because of flooding troubles and was abandoned in 1854. The Oregon Trail runs through the Treasure Valley. The valley was settled for the most part by ranchers and farmers, initially to supply the gold and silver mining communities in the higher elevations nearby: Idaho City in the Boise Basin and Silver City in the Owyhees. A new Fort Boise was constructed by the U.S. Army in 1863 in present-day Boise, from which the city grew.

ern Oregon to Boise, and is the most populated area in Idaho. Historically, the valley had been known as the Lower Snake River Valley or the Boise River Valley. Pete Olesen, president of the valley's association of local Chambers of Commerce, coined the name "Treasure Valley" in 1959 to reflect the treasure chest of resources and opportunities that the region offered. The valley has a very diverse terrain, from sage flatlands, to mesas, agricultural areas, and urbanized areas.

The Treasure Valley is a valley in the western United States, primarily in southwestern Idaho, where the Payette, Boise, Weiser, Malheur, and Owyhee rivers drain into the Snake River. It includes all the lowland areas from Vale in rural eastern Oregon to Boise, and is the most populated area in Idaho. Historically, the valley had been known as the Lower Snake River Valley or the Boise River Valley. Pete Olesen, president of the valley's association of local Chambers of Commerce, coined the name "Treasure Valley" in 1959 to reflect the treasure chest of resources and opportunities that the region offered. The valley has a very diverse terrain, from sage flatlands, to mesas, agricultural areas, and urbanized areas.

nd Elmore counties, upstream of the Lucky Peak Dam and reservoir. The spillway elevation for Arrowrock is 3,219 feet (981 m) above sea level and its primary purpose is to provide irrigation water for agriculture. The dam was designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 2016, and is operated by the U.S. Bureau of Reclamation. Preparations In 1910, the Reclamation Service began to consider another storage facility farther east on the Boise River. After several surveys, engineers decided upon the Arrowrock site which had previously been the site of a private irrigation venture under the direction of Arthur De Wint Foote yet failed for lack of funding. The Arrowrock site is at the confluence of the main channel and the south fork. That was to be the most ambitious project to date for Reclamation. At 348 feet (106 m), Arrowrock would be the largest concrete arch dam in the world. Prior to construction, considerable preparatory work would need to be completed. As the structure was some twenty miles (32 km) upstream from the Boise River Diversion Dam, routing supplies to the worksite would be a massive undertaking unto itself. The Reclamation Service elected to construct a new rail line on the old wagon road leading north to Idaho City. The railroad would begin at the Barberton mill near the Diversion Dam and extend to through a winding canyon up to Arrowrock. Even before the dam had been approved, Reclamation began work on the rail line. Some significant problems existed with construction of the railroad. The Barberton Lumber Company owned the road's right-of-way. That meant that the Reclamation Service needed to come to an agreement over ownership of the rail line. In an unprecedented move, the government agreed to lease the track from Barberton but run the actual locomotive. Part of this agreement stipulated that the line would remain a common carrier. That made the Arrowrock & Boise Railroad the first publicly owned line in the nation. The Service hid this fact from President William Howard Taft when it applied for the Arrowrock Dam's approval. Fortunately for Reclamation, Taft failed to recognize the loophole and in June 1910, the entire project went forward. However, when the Oregon Shortline refused to honor the pact between Barberton and Reclamation, the Arrowrock & Boise terminal was reduced to a field just outside the Barber lumberyard. On August 22, 1910, the entire deal was finalized and work began on the line to the Arrowrock site. Salt Lake City's Manly Brothers won the contract for grading the Arrowrock & Boise road in May 1911. The government called for force account to lay the track from Barber to the work site. Although the construction was delayed several times by the shortage of railroad ties, workers finished the track in early November. By most accounts, the trip through the canyon was a very long and harrowing event. For the first several months, riders were asked to disembark at the unfinished Gooseneck Bridge while the cars were winched across one at a time. However, once they arrived, most passengers were surprised by what they found. Not only was the view breathtaking but the "work" camp offered amenities that were unavailable to some residents of the Treasure Valley. Not only was the site fully powered, but also it provided a central heating plant, running water and an efficient sewage system. Along with the Reclamation offices, the Arrowrock camp carried a hospital, mess hall, post office, and hotel. Workers and visitors were offered lodging in the site's hotel, bunkhouses, or cottages. In addition to the outdoor recreational activities, the camp also operated a YMCA, school, and dancehall. At the peak of construction, some 1,400 people had called Arrowrock home, including some 200 families. To provide power for the site, Reclamation retrofitted The Boise River Diversion Dam with a small powerhouse. Finished in 1912, the plant's three generators produced 1,500 kilowatts of electricity for Arrowrock's camp, sawmills, and giant cement mixers. The German made Allis-Chalmers 725 horsepower (541 kW) turbines, the first in the world to be built with a vertical shaft design. Along with the power lines, government workers hung a two-way phone cable to connect Arrowrock with the outside world. In 1976, the power plant was added to the National Register of Historic Places. After being refurbished by the Bonneville Power Administration in 2002, it is now on ready reserve status and occasionally provides surplus power during times of peak demand. Special care was made to maintain the historic qualities of the powerhouse.

Arrowrock is 3,219 feet (981 m) above sea level and its primary purpose is to provide irrigation water for agriculture. The dam was designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 2016, and is operated by the U.S. Bureau of Reclamation. Preparations In 1910, the Reclamation Service began to consider another storage facility farther east on the Boise River. After several surveys, engineers decided upon the Arrowrock site which had previously been the site of a private irrigation venture under the direction of Arthur De Wint Foote yet failed for lack of funding. The Arrowrock site is at the confluence of the main channel and the south fork. That was to be the most ambitious project to date for Reclamation. At 348 feet (106 m), Arrowrock would be the largest concrete arch dam in the world. Prior to construction, considerable preparatory work would need to be completed. As the structure was some twenty miles (32 km) upstream from the Boise River Diversion Dam, routing supplies to the worksite would be a massive undertaking unto itself. The Reclamation Service elected to construct a new rail line on the old wagon road leading north to Idaho City. The railroad would begin at the Barberton mill near the Diversion Dam and extend to through a winding canyon up to Arrowrock. Even before the dam had been approved, Reclamation began work on the rail line. Some significant problems existed with construction of the railroad. The Barberton Lumber Company owned the road's right-of-way. That meant that the Reclamation Service needed to come to an agreement over ownership of the rail line. In an unprecedented move, the government agreed to lease the track from Barberton but run the actual locomotive. Part of this agreement stipulated that the line would remain a common carrier. That made the Arrowrock & Boise Railroad the first publicly owned line in the nation. The Service hid this fact from President William Howard Taft when it applied for the Arrowrock Dam's approval. Fortunately for Reclamation, Taft failed to recognize the loophole and in June 1910, the entire project went forward. However, when the Oregon Shortline refused to honor the pact between Barberton and Reclamation, the Arrowrock & Boise terminal was reduced to a field just outside the Barber lumberyard. On August 22, 1910, the entire deal was finalized and work began on the line to the Arrowrock site. Salt Lake City's Manly Brothers won the contract for grading the Arrowrock & Boise road in May 1911. The government called for force account to lay the track from Barber to the work site. Although the construction was delayed several times by the shortage of railroad ties, workers finished the track in early November. By most accounts, the trip through the canyon was a very long and harrowing event. For the first several months, riders were asked to disembark at the unfinished Gooseneck Bridge while the cars were winched across one at a time. However, once they arrived, most passengers were surprised by what they found. Not only was the view breathtaking but the "work" camp offered amenities that were unavailable to some residents of the Treasure Valley. Not only was the site fully powered, but also it provided a central heating plant, running water and an efficient sewage system. Along with the Reclamation offices, the Arrowrock camp carried a hospital, mess hall, post office, and hotel. Workers and visitors were offered lodging in the site's hotel, bunkhouses, or cottages. In addition to the outdoor recreational activities, the camp also operated a YMCA, school, and dancehall. At the peak of construction, some 1,400 people had called Arrowrock home, including some 200 families. To provide power for the site, Reclamation retrofitted The Boise River Diversion Dam with a small powerhouse. Finished in 1912, the plant's three generators produced 1,500 kilowatts of electricity for Arrowrock's camp, sawmills, and giant cement mixers. The German made Allis-Chalmers 725 horsepower (541 kW) turbines, the first in the world to be built with a vertical shaft design. Along with the power lines, government workers hung a two-way phone cable to connect Arrowrock with the outside world. In 1976, the power plant was added to the National Register of Historic Places. After being refurbished by the Bonneville Power Administration in 2002, it is now on ready reserve status and occasionally provides surplus power during times of peak demand. Special care was made to maintain the historic qualities of the powerhouse.

U.S. Bureau of Reclamation Archived 2012-09-26 at the Wayback Machine - Arrowrock Dam U.S. Bureau of Reclamation - major storage reservoirs in the Boise & Payette River basins - current levels & flows Historic American Engineering Record (HAER) documentation, filed under Boise River, Twin Springs, Boise County, ID: HAER No. ID-27, "Arrowrock Dam", 101 photos, 123 data pages, 11 photo caption pages HAER No.

es at the Diversion Dam in Ada County and ends after 41 miles (66 km) at Lake Lowell in Canyon County. The canal system includes multiple lateral canals that distribute water to approximately 165,000 acres (260 mi2; 670 km2) of Treasure Valley farmland. The canal's concrete channel has a capacity of 2,400 cubic feet (68 m3) per second. History Completion of the Oregon Short Line Railroad in the early 1880s made possible the construction of farming settlements in the Boise Valley. In 1882, investors from New York founded the Idaho Mining and Irrigation Company in order to transform the desert into farmland between the Boise River and the Snake River in southern Idaho Territory. Investors hoped that the company could also begin mining operations in the region, financed by revenue from irrigation canals. Mining engineer Arthur De Wint Foote commenced a survey of the Boise Valley in 1883, and he envisioned a 75-mile (120 km) canal that would draw water from the south side of the Boise River and irrigate 500,000 acres (780 mi2; 2,020 km2) of desert through 5,000 lateral ditches. The main canal became known as the New York Canal, in deference to eastern investors. It was not the first irrigation system in the Boise Valley; in 1878, William H. Ridenbaugh began construction of the Ridenbaugh Canal from the north side of the Boise River, and smaller projects had existed beginning in the 1860s. In the 1880s, work on the New York Canal focused mainly on the Foote survey and on acquiring water rights. The Idaho Mining and Irrigation Company began construction near the Boise River Canyon, about ten miles (16 km) upstream and east of downtown Boise; work required moving boulders and cutting rock. The difficulty of work partially accounted for slow progress on the canal, but another factor was the Depression of 1882–85, and some eastern investors had been forced to divest their holdings in the company. Arthur Foote continued to work with little pay, and the company allowed only a minimum construction effort, this to retain its water rights. In 1888, the Idaho Statesman objected to claims that the New York Canal would be completed that year. The newspaper found that "maps and profiles" were the only work finished, and the editor projected that the canal would require 500 workers over five years before it was completed. In 1889, Idaho Mining and Irrigation Company manager Charles H. Tompkins Jr., estimated that the canal would be seventy miles (110 km) in length and irrigate about 350,000 acres (550 mi2; 1,400 km2), with an estimated capacity of 2,915 cubic feet (82.5 m3) per second, but he admitted that only two miles (3 km) of the canal had been completed. Another Boise River project undertaken by the company, the Phyllis Canal, named for investors from Philadelphia, also had completed about two miles. The Phyllis Canal later became part of the New York Canal system. In 1890, the company secured investment capital of $300,000 to complete work on the canal. The general contractor was Denver railroad builder William C. Bradbury, and the company believed the canal would be finished in 1891. By September, 1890, 220 workers were employed, and the company advertised employment for 1000 workers. But progress on the canal continued into 1892, when work stopped because of disagreements between investors; work resumed in 1893. The Idaho Mining and Irrigation Company became insolvent in 1891, and contractor Bradbury filed a lien against the company that year. Bradbury continued construction on the canal, apparently financed by his own money. He purchased the canal, right of way, and water rights in a sheriff's auction in 1894. Bradbury later sold the uncompleted canal to the Farmers' Canal Company, an association of about 175 local farmers, in 1896. The United States Congress created the U.S. Reclamation Service in 1902, and the bureau gained control of the New York Canal project. After trimming several miles from the former design and completing construction of the canal and diversion dam, the bureau opened the New York Canal on February 22, 1909.

History Completion of the Oregon Short Line Railroad in the early 1880s made possible the construction of farming settlements in the Boise Valley. In 1882, investors from New York founded the Idaho Mining and Irrigation Company in order to transform the desert into farmland between the Boise River and the Snake River in southern Idaho Territory. Investors hoped that the company could also begin mining operations in the region, financed by revenue from irrigation canals. Mining engineer Arthur De Wint Foote commenced a survey of the Boise Valley in 1883, and he envisioned a 75-mile (120 km) canal that would draw water from the south side of the Boise River and irrigate 500,000 acres (780 mi2; 2,020 km2) of desert through 5,000 lateral ditches. The main canal became known as the New York Canal, in deference to eastern investors. It was not the first irrigation system in the Boise Valley; in 1878, William H. Ridenbaugh began construction of the Ridenbaugh Canal from the north side of the Boise River, and smaller projects had existed beginning in the 1860s. In the 1880s, work on the New York Canal focused mainly on the Foote survey and on acquiring water rights. The Idaho Mining and Irrigation Company began construction near the Boise River Canyon, about ten miles (16 km) upstream and east of downtown Boise; work required moving boulders and cutting rock. The difficulty of work partially accounted for slow progress on the canal, but another factor was the Depression of 1882–85, and some eastern investors had been forced to divest their holdings in the company. Arthur Foote continued to work with little pay, and the company allowed only a minimum construction effort, this to retain its water rights. In 1888, the Idaho Statesman objected to claims that the New York Canal would be completed that year. The newspaper found that "maps and profiles" were the only work finished, and the editor projected that the canal would require 500 workers over five years before it was completed. In 1889, Idaho Mining and Irrigation Company manager Charles H. Tompkins Jr., estimated that the canal would be seventy miles (110 km) in length and irrigate about 350,000 acres (550 mi2; 1,400 km2), with an estimated capacity of 2,915 cubic feet (82.5 m3) per second, but he admitted that only two miles (3 km) of the canal had been completed. Another Boise River project undertaken by the company, the Phyllis Canal, named for investors from Philadelphia, also had completed about two miles. The Phyllis Canal later became part of the New York Canal system. In 1890, the company secured investment capital of $300,000 to complete work on the canal. The general contractor was Denver railroad builder William C. Bradbury, and the company believed the canal would be finished in 1891. By September, 1890, 220 workers were employed, and the company advertised employment for 1000 workers. But progress on the canal continued into 1892, when work stopped because of disagreements between investors; work resumed in 1893. The Idaho Mining and Irrigation Company became insolvent in 1891, and contractor Bradbury filed a lien against the company that year. Bradbury continued construction on the canal, apparently financed by his own money. He purchased the canal, right of way, and water rights in a sheriff's auction in 1894. Bradbury later sold the uncompleted canal to the Farmers' Canal Company, an association of about 175 local farmers, in 1896. The United States Congress created the U.S. Reclamation Service in 1902, and the bureau gained control of the New York Canal project. After trimming several miles from the former design and completing construction of the canal and diversion dam, the bureau opened the New York Canal on February 22, 1909.

les (66 km) at Lake Lowell in Canyon County. The canal system includes multiple lateral canals that distribute water to approximately 165,000 acres (260 mi2; 670 km2) of Treasure Valley farmland. The canal's concrete channel has a capacity of 2,400 cubic feet (68 m3) per second. History Completion of the Oregon Short Line Railroad in the early 1880s made possible the construction of farming settlements in the Boise Valley. In 1882, investors from New York founded the Idaho Mining and Irrigation Company in order to transform the desert into farmland between the Boise River and the Snake River in southern Idaho Territory. Investors hoped that the company could also begin mining operations in the region, financed by revenue from irrigation canals. Mining engineer Arthur De Wint Foote commenced a survey of the Boise Valley in 1883, and he envisioned a 75-mile (120 km) canal that would draw water from the south side of the Boise River and irrigate 500,000 acres (780 mi2; 2,020 km2) of desert through 5,000 lateral ditches. The main canal became known as the New York Canal, in deference to eastern investors. It was not the first irrigation system in the Boise Valley; in 1878, William H. Ridenbaugh began construction of the Ridenbaugh Canal from the north side of the Boise River, and smaller projects had existed beginning in the 1860s. In the 1880s, work on the New York Canal focused mainly on the Foote survey and on acquiring water rights. The Idaho Mining and Irrigation Company began construction near the Boise River Canyon, about ten miles (16 km) upstream and east of downtown Boise; work required moving boulders and cutting rock. The difficulty of work partially accounted for slow progress on the canal, but another factor was the Depression of 1882–85, and some eastern investors had been forced to divest their holdings in the company. Arthur Foote continued to work with little pay, and the company allowed only a minimum construction effort, this to retain its water rights. In 1888, the Idaho Statesman objected to claims that the New York Canal would be completed that year. The newspaper found that "maps and profiles" were the only work finished, and the editor projected that the canal would require 500 workers over five years before it was completed. In 1889, Idaho Mining and Irrigation Company manager Charles H. Tompkins Jr., estimated that the canal would be seventy miles (110 km) in length and irrigate about 350,000 acres (550 mi2; 1,400 km2), with an estimated capacity of 2,915 cubic feet (82.5 m3) per second, but he admitted that only two miles (3 km) of the canal had been completed. Another Boise River project undertaken by the company, the Phyllis Canal, named for investors from Philadelphia, also had completed about two miles. The Phyllis Canal later became part of the New York Canal system. In 1890, the company secured investment capital of $300,000 to complete work on the canal. The general contractor was Denver railroad builder William C. Bradbury, and the company believed the canal would be finished in 1891. By September, 1890, 220 workers were employed, and the company advertised employment for 1000 workers. But progress on the canal continued into 1892, when work stopped because of disagreements between investors; work resumed in 1893. The Idaho Mining and Irrigation Company became insolvent in 1891, and contractor Bradbury filed a lien against the company that year. Bradbury continued construction on the canal, apparently financed by his own money. He purchased the canal, right of way, and water rights in a sheriff's auction in 1894. Bradbury later sold the uncompleted canal to the Farmers' Canal Company, an association of about 175 local farmers, in 1896. The United States Congress created the U.S. Reclamation Service in 1902, and the bureau gained control of the New York Canal project. After trimming several miles from the former design and completing construction of the canal and diversion dam, the bureau opened the New York Canal on February 22, 1909.

sh. The Snake and its tributary, the Salmon River, host the longest sockeye salmon run in the world, stretching 900 miles (1,400 km) from the Pacific to Redfish Lake in Idaho. Since the 1950s, public agencies, tribal governments and private utilities have invested heavily in fishery restoration and hatchery programs, with limited success.

As gold mining declined in the late 19th century, the wheat industry boomed in the Palouse of southeast Washington. By the 1870s, the Oregon Steam Navigation Company was operating seven steamboats transporting grain from the Snake River to lower Columbia River ports. These were the Harvest Queen, John Gates, Spokane, Annie Faxon, Mountain Queen, R.R. Thompson, and Wide West. In the 1890s, a huge copper deposit was discovered at Eureka Bar in Hells Canyon. Several ships transported ore from there to Lewiston, including Imnaha, Mountain Gem, and Norma. In 1893 the Annie Faxon suffered a boiler explosion and sank on the Snake below Lewiston, killing five people. Starting in the 1880s, the Army Corps began dredging the Snake River below Lewiston to maintain a 5-foot (1.5 m) deep navigation channel. River traffic declined rapidly once railroads arrived. By 1899, the Union Pacific line along the south bank of the Snake River had reached Riparia, Washington. It then joined forces with the Northern Pacific Railroad, which was building a line along the north bank, to build the shared Camas Prairie Railroad the rest of the way to Lewiston, which it reached in 1908. The Open River Transportation Company, which operated steamboats between Lewiston and Celilo Falls on the Columbia, went bankrupt in 1912. The 1915 completion of the Celilo Canal made it much easier for boats from the upper Columbia and Snake to reach Portland, and the Columbia River Transportation Company began operating a water route between Lewiston and Portland. Still, steamboats were unable to compete with railroads on speed and efficiency. The last steamboat on the lower Snake ran in 1920. Once the railroads monopolized grain shipments, they raised shipping rates, to farmers' consternation. In 1934, political activist Herbert G. West organized the Inland Empire Waterways Association (IEWA), to promote an "open river" – a deep-water shipping channel on the Snake and Columbia Rivers that could compete with rail. The IEWA initially pushed for improvements such as bigger locks at Bonneville Dam in 1938 and the construction of McNary Dam on the Columbia, which would improve navigation to the mouth of the Snake. In 1941 a bill was first introduced in Congress authorizing the Army Corps to develop the lower Snake River. The 1941 bill failed, but after several years of debate, Congress finally authorized the Snake River development in 1945. Early plans included anywhere from six to ten low dams for the lower Snake. Eventually this was reduced to four bigger dams, which would lower costs, but would require what at the time were the tallest navigation locks in the world, at over 100 feet (30 m). Tribes, state wildlife agencies and the fishing industry opposed the dams, arguing that they would kill too many salmon. In 1947, the U.S. Department of the Interior proposed a ten-year moratorium on dam construction while the fishery problem was studied. With the onset of the Cold War, rising electricity demand in the Pacific Northwest – particularly at the nearby Hanford nuclear site – turned the project's focus towards hydropower. By 1948, the Army Corps estimated that over 80 percent of the economic benefits would come from power, and only 15 percent from navigation. Dam opponents countered that if the primary objective was now power, other dam sites existed in the Northwest that would have less impact on fish. These objections proved futile, as the lower Snake River dams were already authorized, and the federal government had little interest in studying alternatives. While opponents continued to stall the project for a few more years, Washington Senator Warren G.

Populations of anadromous fish began to decline in the late 1800s due to the impact of commercial fishing, logging, mining and agriculture, but even in the 1930s, returning fall chinook alone numbered 500,000. Populations further collapsed once dams were built on the lower Snake and Columbia Rivers, and Hells Canyon Dam blocked access to the upper Snake. Wild Snake River spring and summer chinook returns declined from 130,000 in the 1950s to less than 5,000 in the 1990s. Wild steelhead returns followed a similar pattern, falling from 110,000 in the 1960s to less than 10,000 in the 1990s. Spring, summer and fall-run chinook were all listed as threatened in 1992. Snake River steelhead were also listed as threatened in 1997. Wild chinook salmon and steelhead continued to decline into the 1990s, but have begun an unsteady recovery since 2000, with both chinook and steelhead returns up to 20,000–30,000 in some years. Coho salmon had disappeared from the Snake River by the 1980s, they were reintroduced to the watershed in 1995. Snake River sockeye once numbered to up 150,000 adults. Between 24,000 and 30,000 sockeye returned to Wallowa Lake in the Grande Ronde River watershed, but the run was eliminated by 1905 due to overharvest and unscreened irrigation diversions. The Payette Lake population once numbering up to 100,000 was blocked by the Black Canyon Dam in 1924. Sockeye in the Yellowbelly, Stanley, and Pettit Lakes of the Sawtooth basin were eradicated by management actions of the Idaho Department of Fish and Game in the 1950s, and irrigation diversions lead to the extirpation of the Pettit Lake population. Snake River sockeye returns declined to 4,500 in the 1950s and only a few dozen by the late 1960s. Snake River sockeye were listed as endangered in 1991. Numerous hatcheries are operated by agencies such as the Army Corps, Idaho Power, the Bonneville Power Administration, the U.S. Bureau of Indian Affairs and the U.S. Fish and Wildlife Service, to supplement wild fish populations. Hatcheries release about 33 million salmon and steelhead smolt into the Snake River watershed each year. However, the survival rate for hatchery fish is poor. Just 0.4 percent of hatchery chinook and 1.5 percent of hatchery steelhead returned as adults, as measured at Lower Granite Dam between 2007 and 2016. Upstream of the four lower dams, the Snake River watershed contains some of the best remaining spawning habitat in the Columbia River system, particularly along the Clearwater and Salmon Rivers; the latter is one of the longest undammed rivers in the continental US. A much depleted sockeye salmon run continues to spawn in Redfish Lake near Stanley, Idaho, more than 900 miles (1,400 km) inland from the Pacific Ocean.

Boise (locally also ) is the capital and most populous city in the U.S. state of Idaho. It is the county seat of Ada County. The population of the city was 235,685 at the 2020 census. The Boise metropolitan area, located in the Treasure Valley, includes five counties of Idaho with an estimated population of 846,000, the most populous metropolitan area in Idaho and 95th-most populous in the United States. Located on the Boise River in southwestern Idaho, it is 41 miles (66 km) east of the Oregon border and 110 miles (177 km) north of the Nevada border. Downtown Boise's elevation is 2,704 feet (824 m) above sea level. Boise is home to major employers in the technology, manufacturing, and service sectors, including companies such as Micron Technology and Hewlett-Packard.

an area in Idaho and 95th-most populous in the United States. Located on the Boise River in southwestern Idaho, it is 41 miles (66 km) east of the Oregon border and 110 miles (177 km) north of the Nevada border. Downtown Boise's elevation is 2,704 feet (824 m) above sea level. Boise is home to major employers in the technology, manufacturing, and service sectors, including companies such as Micron Technology and Hewlett-Packard.

...that the military should continue killing Indians 'until the last Indian in the Territories was either on his reservation or enriched the sagebrush with his decaying carcass.' ...if the Indians refused to move there, 'they will be killed or put on the reservation by force, and certainly shot if they don't stay there.' Furthermore, the editor continues, 'The idea that the Indians have any right to the soil is ridiculous. ...They have no more rights to the soil of the Territories of the United States than wolves or coyotes...' This would be our plan of establishing friendship upon an eternal basis with our Indians: Let all the hostile bands of Idaho Territory be called in (they will not be caught in any other manner) to attend a grand treaty; plenty of blankets and nice little trinkets distributed among them; plenty of grub on hand; have a real jolly time with them; then just before the big feast put strychnine in their meat and poison to death the last mother's son of them. At the same time, native warriors around the valley, under the leadership of Howluck also known as "Bigfoot" among white settlers, among others, waged an escalating and intensified guerrilla campaign of harassment of passerby caravans along the Oregon Trail. The United States Army also escalated and intensified "punitive expeditions" against formations of warriors and against civilian communities as well. This marked the start of the "unofficial" Snake War in 1866. This war lasted until 1868, and is statistically the deadliest of the Indian Wars in the West in terms of casualties. In the end, 1,762 men were counted as the casualties of this war from both sides. In 1868, Fort Hall Indian Reservation was established in Southeastern Idaho, about 220 miles upstream, according to the terms of Fort Bridger Treaty. The Boise Valley Shoshone and Bannock Tribes were not party to this treaty. Nevertheless, in April 1869, the United States Military embarked on a campaign of "Removal, rounding up of natives in the region including in and around Boise, and expelling them with cavalry escort to Fort Hall Indian Reservation. This period is known among the Shoshone and Bannock people as Idaho's Trail of Tears. Some of the natives managed to escape, and they ran to either Duck Valley or Fort McDermitt in Nevada. Incorporation and growth Boise's early growth was significantly driven by its role in supplying the nearby gold towns that sprung up in the 1860s northeast and then southwest of the town. Miners sometimes wintered in Boise and a number of early prominent businessmen were miners who settled in town in the years after the gold rush waned. By 1864 substantial agricultural production was underway on easily irrigated lands near the river and three canal companies had been incorporated. Early transportation improvements were largely a result of toll road franchises awarded by the territorial legislature starting in the 1860s. These first ran from Fort Boise to the mining centers in the Boise Basin and east to Rocky Bar and to Rattlesnake Station where they connected to the Oregon Trail. Territorial census records from a special 1864 enumeration list the population of Boise as 1,658, and an act of December 12, 1864, was the first attempt by the Idaho Territorial Legislature to incorporate the city. This was rejected by voters the following March. Two more unsuccessful attempts were made to organize a city administration by election before the 1866 version of the city charter was approved by voters on January 6, 1868. The growing number of homes and businesses, for which owners wanted proper legal title, may have contributed to the eventual success of incorporation. All of these rejected efforts to incorporate the city came after Boise had been controversially made the state capital in 1864 over strong opposition from northern Idaho interests. This decision reflected the rapid shift of population growth from north to south after the discovery of gold in southern Idaho. By 1868 Boise had over 400 permanent buildings with a wide range of commercial services. 1868 also marked the formal beginning of a long advocacy for railroad connections to other Idaho communities and, just as importantly, to other growing cities in the west such as Portland, Oregon. Competing railroad and western state government interests frustrated these efforts for many years. Designed by Alfred B. Mullett, the U.S. Assay Office at 210 Main Street was built in 1871 and today is a National Historic Landmark. It first began accepting gold and silver for purchase on March 2, 1872, largely eliminating the need to transport ore to the mint in San Francisco. A territorial penitentiary, now known as the Old Idaho State Penitentiary, opened the same month several miles east of town. Mining continued to be important to Boise's economic growth and periodic booms contributed to population growth as well, though production of gold and silver probably peaked in the 1860s. 1882's gold and silver production of $3,500,000 declined to $1,488,315 (including lead) by 1899. Boise began to earn its City of Trees nickname in this period with a popular focus on a range of tree planting projects. Thomas J. Davis planted several thousand fruit trees in 1864 and several other early businessmen either founded nurseries or orchards of their own. In the 1870s tree planting began in earnest in downtown Boise led by prominent hotels as well as businessmen and residents. In 1907 Davis donated 43 acres of his orchard property to the city for use as a park in the name of his wife Julia. Commercial agriculture continued to expand, but was slowed by the lack of reliable rail links to regional and national markets and by a lack of large scale irrigation projects, which themselves were often tied to hoped-for railroad projects for financing. A.D. Foote, a successful mining engineer, drew up plans to irrigate up to 500,000 acres immediately south of Boise in 1882, but progress was halting and smaller farms were the norm until after the turn of the century with most located near to the river bottom where soil was productive and irrigation more easily achieved. Fruit orchards proliferated and sugar beets, still an important agricultural industry in Idaho, began to be widely cultivated in the 1890s. Cattle and sheep farming became increasingly important as the century closed. With the exception of dairy, most livestock products were exported from Idaho, unlike other agricultural products which were still largely scaled to support local markets. The timber industry also increasingly thrived in the Boise market in the 1880s and 1890s. Large quantities of timber were exported from elsewhere in Idaho, but a growing Boise supported the expansion of Alexander Rossi's sawmill, first established in 1865. Prominent early Boisean William Ridenbaugh had inherited control of the canal now bearing his name from his uncle William Morris in 1878 and later partnered with Rossi to expand the sawmill capacity under the name Rossi and Ridenbaugh Lumber Company. Their materials supported bridge building and the rapid expansion of Boise in the 1890s. As with many early infrastructure ventures, electrification succeeded only after at least one false start. July 4, 1887, marked the start of electrical transmission from a plant located on the Bench. William Ridenbaugh provided expertise and manpower for the water supply and several months were spent rigging poles and lines from the Bench to the service area across the river. Additional electrical supplies allowed the building of an electric streetcar line in 1891. This ran without interruption until buses replaced the lines in 1927, tracking—and sometimes driving—the development of Boise and nearby communities. This system expanded over several decades, reaching into the North End, South Boise and across the river on Front St. A loop line, completed in 1912, ran as far as Caldwell and Nampa, providing transport throughout the valley. Three early trolley companies merged in 1912 to form the Idaho Traction Company with a depot at 7th and Bannock Streets downtown. Additional services and urban amenities arrived in the 1890s as Boise grew. Exploratory drilling for hot water was successful in 1890 and by the end of the decade many homes along Warm Springs avenue were being heated by this source. A natatorium was built in 1892 close to the source of the hot water near the Idaho State Penitentiary. Churches serving several denominations, a Jewish synagogue, a major hardware store and department store, a Masonic hall, the Columbia Theater, Saint Alphonsus' Hospital, a number of parochial and secular schools, a City Hall and a new Union Pacific passenger station, constructed when service was finally extended to downtown, were all built during the 1890s. Falk's Department Store sponsored a semi-professional baseball team representing Boise from at least 1892 and the city supported other organized sports as they became popular.

began in 1941 and experienced numerous challenges with materials, fuel, and labor shortages during World War II. Work was halted for over nine months beginning in late December 1942. The Reclamation Act of 1902 had racial exclusions on labor which were strictly adhered to until Congress changed the law in 1943. This allowed Japanese American internees to work on Reclamation projects; Anderson Ranch utilized internees from the Minidoka War Relocation Center, northeast of Twin Falls. The South Fork of the Boise River originates in the Smoky Mountains north of Fairfield. Its watershed includes portions of the Smoky Mountains, Soldier Mountains, Boise National Forest, and Sawtooth National Forest. Below the dam, the South Fork flows northwestward into the reservoir behind the concrete Arrowrock Dam, completed in 1915. The Bureau of Reclamation and Idaho Water Resource Board are working on raising the dam by six feet (1.8 m), resulting in approximately 29,000 acre-feet (35,800,000 m3) of new storage space.

d operated by the U.S. Bureau of Reclamation. When completed 76 years ago in 1950, Anderson Ranch was the tallest dam of its type in the world. Its primary purpose is to provide irrigation water for agriculture, with a secondary purpose of hydroelectric power. Its generating capacity was increased from 27 to 40 MW in 1986. Its reservoir has a spillway elevation of 4,196 feet (1,280 m) above sea level. The construction of the dam began in 1941 and experienced numerous challenges with materials, fuel, and labor shortages during World War II. Work was halted for over nine months beginning in late December 1942. The Reclamation Act of 1902 had racial exclusions on labor which were strictly adhered to until Congress changed the law in 1943. This allowed Japanese American internees to work on Reclamation projects; Anderson Ranch utilized internees from the Minidoka War Relocation Center, northeast of Twin Falls. The South Fork of the Boise River originates in the Smoky Mountains north of Fairfield. Its watershed includes portions of the Smoky Mountains, Soldier Mountains, Boise National Forest, and Sawtooth National Forest. Below the dam, the South Fork flows northwestward into the reservoir behind the concrete Arrowrock Dam, completed in 1915. The Bureau of Reclamation and Idaho Water Resource Board are working on raising the dam by six feet (1.8 m), resulting in approximately 29,000 acre-feet (35,800,000 m3) of new storage space.

Anderson Ranch Dam is an earth rockfill type dam in the western United States, on the South Fork of the Boise River in southwestern Idaho. In Elmore County northeast of Mountain Home, it is several miles north of U.S. Route 20 and operated by the U.S. Bureau of Reclamation. When completed 76 years ago in 1950, Anderson Ranch was the tallest dam of its type in the world. Its primary purpose is to provide irrigation water for agriculture, with a secondary purpose of hydroelectric power. Its generating capacity was increased from 27 to 40 MW in 1986. Its reservoir has a spillway elevation of 4,196 feet (1,280 m) above sea level. The construction of the dam began in 1941 and experienced numerous challenges with materials, fuel, and labor shortages during World War II. Work was halted for over nine months beginning in late December 1942. The Reclamation Act of 1902 had racial exclusions on labor which were strictly adhered to until Congress changed the law in 1943. This allowed Japanese American internees to work on Reclamation projects; Anderson Ranch utilized internees from the Minidoka War Relocation Center, northeast of Twin Falls. The South Fork of the Boise River originates in the Smoky Mountains north of Fairfield. Its watershed includes portions of the Smoky Mountains, Soldier Mountains, Boise National Forest, and Sawtooth National Forest. Below the dam, the South Fork flows northwestward into the reservoir behind the concrete Arrowrock Dam, completed in 1915. The Bureau of Reclamation and Idaho Water Resource Board are working on raising the dam by six feet (1.8 m), resulting in approximately 29,000 acre-feet (35,800,000 m3) of new storage space.

1,983 in 2010. It is the fourth largest city in the county (behind Middleton, Caldwell, and Nampa all in the county's eastern portion) and the largest in the rural western portion.

2000 census As of the census of 2000, there were 1,771 people, 617 households, and 454 families living in the city. The population density was 1,919.5 inhabitants per square mile (741.1/km2). In the 2010 census there were 1,983 There were 676 housing units at an average density of 732.7 per square mile (282.9/km2). The racial makeup of the city was 83.91% White, 0.17% African American, 0.85% Native American, 0.96% Asian, 9.66% from other races, and 4.46% from two or more races. Hispanic or Latino of any race were 27.10% of the population. There were 617 households, out of which 38.2% had children under the age of 18 living with them, 60.3% were married couples living together, 9.2% had a female householder with no husband present, and 26.4% were non-families. 23.0% of all households were made up of individuals, and 14.1% had someone living alone who was 65 years of age or older. The average household size was 2.85 and the average family size was 3.41. In the city, the population was spread out, with 31.4% under the age of 18, 7.8% from 18 to 24, 26.9% from 25 to 44, 19.1% from 45 to 64, and 14.9% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 97.9 males. For every 100 females age 18 and over, there were 94.7 males. The median income for a household in the city was $31,964, and the median income for a family was $36,336. Males had a median income of $26,167 versus $18,636 for females. The per capita income for the city was $11,861. About 11.7% of families and 15.0% of the population were below the poverty line, including 13.9% of those under age 18 and 28.9% of those age 65 or over. Education It is in the Parma School District 137. Residents of Canyon County are in the area (and the taxation zone) for College of Western Idaho. Notable people Edgar Rice Burroughs, creator of Tarzan and John Carter of Mars. Served as a city councilman for Parma. Jimmy Johnston, American football player, born in Parma Jerry Kramer, American football player; elected to the Pro Football Hall of Fame in 2018 Jordan Kramer, American football player, born in Parma. C.

nd the largest in the rural western portion. It is part of the Boise City–Nampa, Idaho Metropolitan Statistical Area. The city was named after Parma, Italy. Geography According to the United States Census Bureau, the city has a total area of 1.11 square miles (2.87 km2), of which, 1.10 square miles (2.85 km2) is land and 0.01 square miles (0.03 km2) is water. Climate According to the Köppen Climate Classification system, Parma has a cold semi-arid climate, abbreviated "BSk" on climate maps.

History Simplot was founded in 1929 by 20-year-old John Richard Simplot near the agricultural community of Declo in south central Idaho. During the early 1940s, the business expanded, providing the military with dehydrated onions and potatoes during World War II. The firm was incorporated as the J. R. Simplot Company in 1955. Simplot made billions from the commercialization of frozen French fries by one of its scientists, chemist Ray L. Dunlap. By the early 1970s, it was the primary supplier of French fries to McDonald's. By 2005 it supplied more than half of all French fries for the fast food chain. Simplot also produces fertilizers for agriculture, the mining of which has been a cause of recent environmental concerns. Simplot is now one of the largest privately owned companies in the world (ranked 54th in Private Companies by Forbes magazine in 2020), ⁣ with $7.6B in revenue and 13,000 employees. It has branches in Australia, Canada, Mexico, China, and several other regions.

Philanthropy Since its founding, J. R. Simplot Company has contributed to numerous local organizations and causes, including Ronald McDonald House, WWF-Australia, Boys and Girls Clubs, Future Farmers of America, St. Luke's Children's Hospital, and the Special Olympics. Much of the company's philanthropic efforts are directed by employees serving on the company's volunteer service committee. The Simplot Company has donated thousands of pounds of potatoes to the Idaho Foodbank and the Boise Rescue Mission.

J. R. Simplot retired from his role as president of his company in 1973, but remained actively involved for numerous years thereafter.

Ada County is located in the southwestern part of Idaho, United States. As of the 2020 census, the county had a population of 494,967, which by 2025 was estimated to have risen to 546,141. Ada County is by far the state's most populous county; it is home to 26.8% of the state's population. The county seat and largest city is Boise, which is also the state capital. Ada County is included in the Boise metropolitan area. The Ada County Highway District has jurisdiction over all the local county and city streets, except for private roads and state roads.

populous county; it is home to 26.8% of the state's population. The county seat and largest city is Boise, which is also the state capital. Ada County is included in the Boise metropolitan area. The Ada County Highway District has jurisdiction over all the local county and city streets, except for private roads and state roads.

ea. The Ada County Highway District has jurisdiction over all the local county and city streets, except for private roads and state roads. In the interior Pacific Northwest east of the Cascade Range, Ada County ranks second in population, behind Spokane County, Washington. History Ada County was created by the Idaho Territory legislature on December 22, 1864, partitioned from Boise County. It is named for Ada Riggs, the daughter of H. C. Riggs, a member of the legislature; he established the county and was a co-founder of Boise.

western United States in southwestern Idaho, near Boise and Nampa. The dams are components of the U.S. Bureau of Reclamation's Boise Project, and were designed to provide irrigation water to 500,000 acres (780 mi2; 2,000 km2) of Treasure Valley farmland in conjunction with the New York Irrigation District (New York Canal). The Boise River Diversion Dam also provides hydroelectric generation capacity.

ise Project, and were designed to provide irrigation water to 500,000 acres (780 mi2; 2,000 km2) of Treasure Valley farmland in conjunction with the New York Irrigation District (New York Canal). The Boise River Diversion Dam also provides hydroelectric generation capacity.

ver Diversion Dam also provides hydroelectric generation capacity. The dams were listed on the National Register in 1976. The three dams that make up the Diversion Dam and Deer Flat Embankments are: Boise River Diversion Dam Deer Flat Upper Embankment Deer Flat Lower Embankment See also National Register of Historic Places listings in Ada County, Idaho National Register of Historic Places listings in Canyon County, Idaho Deer Flat National Wildlife Refuge

pa ( ) is the most populous city in Canyon County, Idaho, United States. The population was 100,200 at the 2020 census. It is Idaho's third-most populous city. Nampa is about 20 miles (32 km) west of Boise along Interstate 84, and 6 miles (9.7 km) west of Meridian. It is the second principal city of the Boise metropolitan area. The name "Nampa" may have come from a Shoshoni word meaning 'moccasin' or 'footprint'. According to toponymist William O. Bright, the name comes from the Shoshoni word /nampai/, meaning "foot".

History Nampa had its beginnings in the early 1880s when the Oregon Short Line Railroad built a line from Granger, Wyoming, to Huntington, Oregon, that passed through Nampa. In Nampa there is a history museum that marks the railroad's significance. More railroad lines sprang up through Nampa, making it an important railroad town. Alexander and Hannah Duffes established one of the town's first homesteads, eventually forming the Nampa Land and Improvement Company with the help of their friend and co-founder, James McGee. Despite the name, many early settlers called the town "New Jerusalem" because of its citizens' strong religious focus. After only a year the town grew from 15 homes to 50. As amenities were added, Nampa continued to grow, and it was incorporated in 1891. Downtown Nampa's street grid is oriented with the railroad tracks, which run northwest–southeast; this was done intentionally by Alexander Duffes to prevent accidents like one that occurred earlier in a town he had platted near Toronto, where a woman and her two children were killed by a train when their buggy wheel got stuck as they crossed the tracks. As the Oregon Short Line railroad originally bypassed Boise, Nampa has the fanciest of many railroad depots built in the area. Nampa gained attention in 1889 due to a purported archaeological discovery known as the Nampa figurine. George Frederick Wright wrote up details that year for the Boston Society of Natural History. The first elementary school was built in the 1890s. Lakeview School was on a hill on 6th Street and 12th Avenue North, with a view of Lake Ethel. Just after the school's centennial celebration, it was condemned as a school and sold to the First Mennonite Church. In 2008 the building was refurbished, and it is now used by the Idaho Arts Charter School. Lake Ethel, an irrigation reservoir, had long been the site of community picnics, and many citizens fished, swam, boated, and even hunted on it and its surrounding property. But the hunting didn't last long, as O. F. Persons, owner of the adjoining homestead, took offense when local hunters started shooting his pet ducks. The city later auctioned off the lake. E. H. Dewey (a former Nampa mayor) was the only bidder. But occasional flooding led to a series of lawsuits from neighbors. Dewey eventually drained Lake Ethel. Not long after, the city council became interested in buying back the Fritz Miller property as well as the Dewey home. Pressure had been building for more than four years. Nampa citizens wanted another park. On August 7, 1924, the city council passed an ordinance to purchase the Miller property and name it Lakeview Park. A bandstand was completed in 1928, and the municipal swimming pool opened on August 13, 1934. It is Nampa's largest park and many community celebrations are held there. Colonel William H. Dewey, a man who made a fortune mining in Silver City, built the Dewey Palace Hotel in 1902 for $250,000. He died in his hotel in 1903, leaving his son $1 million. The hotel survived the great fire of 1909, which burned several blocks of downtown Nampa, but was razed in 1963 after redevelopment plans failed. Relics from the hotel such as the chandelier and the hotel safe can be found at the Canyon County Historical Museum, which is in the old train depot on Front Street and Nampa City Hall. After demolition the location on First Street between 11th and 12th Ave. South was sold to private enterprise, including a bank and tire store, replacing this building with modern structures. A public-use postage stamp sized park was later placed across the street from the old palace property as a collaboration between the Downtown Alliance of Nampa (the local business council) and an Eagle Scout Project for the Boy Scouts of America. The park includes a large mural/wall sculpture of running horses commissioned for the project. A Carnegie library was built downtown in 1908; it burned down after the library moved in 1966. Nampa Public Library was then on the corner of 1st Street and 11th Avenue South in the old bank building. A new library, on 12th Avenue South, opened in 2015. Deer Flat Reservoir, an offstream irrigation storage reservoir, was constructed by the United States Bureau of Reclamation between 1906 and 1911. Known locally as Lake Lowell, it is surrounded by the Deer Flat National Wildlife Refuge, established in 1909 by President Theodore Roosevelt. The refuge is administered by the U.S. Fish and Wildlife Service. Lake Lowell is filled by the concrete New York Canal; the water is diverted from the Boise River a few miles below Lucky Peak Dam. In 1910, the Idaho State School and Hospital was built northwest of Nampa for the state's developmentally challenged population. It opened in 1918. The institution was largely self-sufficient, with a large farm staffed by the residents. The higher-functioning residents also cared for residents who could not care for themselves. The land for the farm was sold and is now golf courses (Centennial and Ridgecrest), and the residents no longer give primary care to other residents. The institution is modernized and remains in operation, though a few of the oldest buildings now house juvenile offenders. Nampa held an annual harvest festival and farmers' market from about 1908, a time of celebration and community fun. From this festival emerged the Snake River Stampede Rodeo in 1937, which continues to this day. It is one of the top 12 rodeos in the pro rodeo circuits. In 1913, a local congregation of the Church of the Nazarene built a small elementary school, which became to Northwest Nazarene College in 1915 and finally Northwest Nazarene University. As of 2025, the university has approximately 1,800 undergraduate and graduate students. Karcher Mall opened in 1965, the first enclosed shopping mall in the Treasure Valley. It was "the place to gather" for several decades until the Boise Towne Square mall was built in Boise in 1988, drawing business away. Karcher Mall was renamed District 208 in 2022. The Idaho Press-Tribune is the local newspaper for the Canyon County area.

Idaho Hispanic Community Center (IH2C) In 2003, the Hispanic Cultural Center of Idaho (HCCI) opened thanks to community support. It has recently transitioned back to the City of Nampa and was renamed the Idaho Hispanic Community Center (IH2C) and is home to the Idaho Hispanic Foundation. It hosts events, classes, and festivals, including Día de los Muertos, Hispanic Heritage Month, and Día Internacional de la Mujer. It serves as a meeting place for associations and groups. Displays of cultural history are available to the public. Nampa Train Depot Museum The Nampa Train Depot Museum is a historical depot with displays and archives of the area's railroad and cultural history. The Canyon County Historical Society saved the depot from demolition in 1972. Annual Festival of the Arts Nampa's Festival of the Arts, which began in 1987, is held in Lakeview Park every year and includes local art, music, dance, and food.

city in Idaho. As of the 2020 census, Caldwell had a population of 59,996. Caldwell is considered part of the Boise metropolitan area, and is the location of the College of Idaho. The city is located approximately 24 miles (39 km) west of Boise, and approximately 17 miles (27 km) east of the Oregon border. History The present-day location of Caldwell is along a natural passageway to the Inland and Pacific Northwest. Native American tribes from the west coast, north Idaho and as far away as Colorado came to the banks of the Boise River for annual trading fairs, or rendezvous. European and some Hawaiian explorers and traders soon followed the paths left by Native Americans and hopeful emigrants later forged the Oregon Trail and followed those paths to seek a better life in the Oregon Territory. Pioneers of the Trail traveled along the Boise River to Canyon Hill and forded the river close to the Silver Bridge on Plymouth Street. During the Civil War, the discovery of gold in Idaho's mountains brought a variety of new settlers into the area. Many never made it to the mines but settled along the Boise River and run ferries, stage stations, and freighting businesses. These early entrepreneurs created small ranches and farms in the river valleys. Caldwell's inception occurred largely as a result of the construction of the Oregon Short Line Railroad, which connected Wyoming to Oregon through Idaho. Robert E. Strahorn came to the Boise River Valley in 1883 to select a route for the railroad. He rejected the grade into Boise City as too steep and chose a site 30 miles to the west. He drove a stake into an alkali flat of sagebrush and greasewood and the City of Caldwell was platted. Caldwell was named after one of Strahorn's business partners, Alexander Caldwell, a former senator from Kansas. When Caldwell was platted in August 1883, its founder, the Idaho and Oregon Land Improvement Company, started persuading settlers and businessmen to move to the area. Within four months, Caldwell had 600 residents living in 150 dwellings, 40 businesses, a school, a telephone exchange, and two newspapers. On January 15, 1890, the Board of Commissioners of Ada County issued a handwritten order incorporating the City of Caldwell. The College of Idaho was founded in Caldwell in 1891. In 1892, Canyon County was established from a portion of Ada County, and Caldwell was named the county seat. Irrigation canals and waterways were constructed throughout Canyon County, providing the foundation for an agricultural economy. The Oregon Short Line Railroad became part of the larger Union Pacific Railroad network and in 1906 the Caldwell freight and passenger depot was constructed. Caldwell experienced moderate growth as an agricultural processing, commercial retail and educational center during the 20th century. In 2009, the City of Caldwell completed a revitalization project to restore Indian Creek, which runs through downtown Caldwell, but had been used for sewage disposal by local industries and been covered over.

History The present-day location of Caldwell is along a natural passageway to the Inland and Pacific Northwest. Native American tribes from the west coast, north Idaho and as far away as Colorado came to the banks of the Boise River for annual trading fairs, or rendezvous. European and some Hawaiian explorers and traders soon followed the paths left by Native Americans and hopeful emigrants later forged the Oregon Trail and followed those paths to seek a better life in the Oregon Territory. Pioneers of the Trail traveled along the Boise River to Canyon Hill and forded the river close to the Silver Bridge on Plymouth Street. During the Civil War, the discovery of gold in Idaho's mountains brought a variety of new settlers into the area. Many never made it to the mines but settled along the Boise River and run ferries, stage stations, and freighting businesses. These early entrepreneurs created small ranches and farms in the river valleys. Caldwell's inception occurred largely as a result of the construction of the Oregon Short Line Railroad, which connected Wyoming to Oregon through Idaho. Robert E. Strahorn came to the Boise River Valley in 1883 to select a route for the railroad. He rejected the grade into Boise City as too steep and chose a site 30 miles to the west. He drove a stake into an alkali flat of sagebrush and greasewood and the City of Caldwell was platted. Caldwell was named after one of Strahorn's business partners, Alexander Caldwell, a former senator from Kansas. When Caldwell was platted in August 1883, its founder, the Idaho and Oregon Land Improvement Company, started persuading settlers and businessmen to move to the area. Within four months, Caldwell had 600 residents living in 150 dwellings, 40 businesses, a school, a telephone exchange, and two newspapers. On January 15, 1890, the Board of Commissioners of Ada County issued a handwritten order incorporating the City of Caldwell. The College of Idaho was founded in Caldwell in 1891. In 1892, Canyon County was established from a portion of Ada County, and Caldwell was named the county seat. Irrigation canals and waterways were constructed throughout Canyon County, providing the foundation for an agricultural economy. The Oregon Short Line Railroad became part of the larger Union Pacific Railroad network and in 1906 the Caldwell freight and passenger depot was constructed. Caldwell experienced moderate growth as an agricultural processing, commercial retail and educational center during the 20th century. In 2009, the City of Caldwell completed a revitalization project to restore Indian Creek, which runs through downtown Caldwell, but had been used for sewage disposal by local industries and been covered over.

rt of the Boise metropolitan area, and is the location of the College of Idaho. The city is located approximately 24 miles (39 km) west of Boise, and approximately 17 miles (27 km) east of the Oregon border. History The present-day location of Caldwell is along a natural passageway to the Inland and Pacific Northwest. Native American tribes from the west coast, north Idaho and as far away as Colorado came to the banks of the Boise River for annual trading fairs, or rendezvous. European and some Hawaiian explorers and traders soon followed the paths left by Native Americans and hopeful emigrants later forged the Oregon Trail and followed those paths to seek a better life in the Oregon Territory. Pioneers of the Trail traveled along the Boise River to Canyon Hill and forded the river close to the Silver Bridge on Plymouth Street. During the Civil War, the discovery of gold in Idaho's mountains brought a variety of new settlers into the area. Many never made it to the mines but settled along the Boise River and run ferries, stage stations, and freighting businesses. These early entrepreneurs created small ranches and farms in the river valleys. Caldwell's inception occurred largely as a result of the construction of the Oregon Short Line Railroad, which connected Wyoming to Oregon through Idaho. Robert E. Strahorn came to the Boise River Valley in 1883 to select a route for the railroad. He rejected the grade into Boise City as too steep and chose a site 30 miles to the west. He drove a stake into an alkali flat of sagebrush and greasewood and the City of Caldwell was platted. Caldwell was named after one of Strahorn's business partners, Alexander Caldwell, a former senator from Kansas. When Caldwell was platted in August 1883, its founder, the Idaho and Oregon Land Improvement Company, started persuading settlers and businessmen to move to the area. Within four months, Caldwell had 600 residents living in 150 dwellings, 40 businesses, a school, a telephone exchange, and two newspapers. On January 15, 1890, the Board of Commissioners of Ada County issued a handwritten order incorporating the City of Caldwell. The College of Idaho was founded in Caldwell in 1891. In 1892, Canyon County was established from a portion of Ada County, and Caldwell was named the county seat. Irrigation canals and waterways were constructed throughout Canyon County, providing the foundation for an agricultural economy. The Oregon Short Line Railroad became part of the larger Union Pacific Railroad network and in 1906 the Caldwell freight and passenger depot was constructed. Caldwell experienced moderate growth as an agricultural processing, commercial retail and educational center during the 20th century. In 2009, the City of Caldwell completed a revitalization project to restore Indian Creek, which runs through downtown Caldwell, but had been used for sewage disposal by local industries and been covered over.

105, which by 2025 was estimated to have risen to 275,123, making it the second-most populous county in Idaho. The county seat is Caldwell, and its largest city is Nampa. Canyon County is part of the Boise metropolitan area. History Hudson's Bay Company established Fort Boise in 1834 near what is now Parma, but abandoned it in 1855. Emigrants traveled through Canyon County on the Oregon Trail. Discovery of gold in the Boise Basin in 1862 brought settlement to the region again. The lower Boise River was fully contained within Boise County from 1863 until the formation of Ada County in 1864. Settlement of the lower Boise River west of Boise City was limited prior to the completion of the Oregon Short Line Railroad. Middleton was the first European settlement of Canyon County, starting in 1863. The 1870 Census for Ada County listed 76 residents of the Boise Valley, excluding Boise City and the 1880 Census listed 44 residents at Middleton. The arrival of the railroad at Caldwell led to the establishment of a town there as of August 1883. Businessmen James A. McGee and Alexander Duffes filed the plat for nearby Nampa in 1886. Parma was settled around the same time, with the Old Fort Boise post office being moved to the town's location; it was incorporated in 1904. Ada County established precincts for each of the settlements with a combined 1890 Census population of 2,311. Significant settlement of Greenleaf and Notus started around 1904 with the two settlements listed as precincts at the 1910 census. Notus was incorporated in 1921 while Greenleaf was incorporated prior to 1980. Melba was incorporated in 1912 while Wilder was incorporated in 1919. The City of Star annexed a portion of territory in northeast Canyon County prior to 2007, becoming the county's ninth incorporated city. The majority of Star is located within Ada County. The Idaho Legislature created Canyon County from Ada County in an act approved March 7, 1891, effective at the November 26, 1892, election. Caldwell was established as the county seat. The county originally contained all of Canyon and Payette counties and part of Gem; Gem County formed in 1915 and Payette County in 1917.

History Hudson's Bay Company established Fort Boise in 1834 near what is now Parma, but abandoned it in 1855. Emigrants traveled through Canyon County on the Oregon Trail. Discovery of gold in the Boise Basin in 1862 brought settlement to the region again. The lower Boise River was fully contained within Boise County from 1863 until the formation of Ada County in 1864. Settlement of the lower Boise River west of Boise City was limited prior to the completion of the Oregon Short Line Railroad. Middleton was the first European settlement of Canyon County, starting in 1863. The 1870 Census for Ada County listed 76 residents of the Boise Valley, excluding Boise City and the 1880 Census listed 44 residents at Middleton. The arrival of the railroad at Caldwell led to the establishment of a town there as of August 1883. Businessmen James A. McGee and Alexander Duffes filed the plat for nearby Nampa in 1886. Parma was settled around the same time, with the Old Fort Boise post office being moved to the town's location; it was incorporated in 1904. Ada County established precincts for each of the settlements with a combined 1890 Census population of 2,311. Significant settlement of Greenleaf and Notus started around 1904 with the two settlements listed as precincts at the 1910 census. Notus was incorporated in 1921 while Greenleaf was incorporated prior to 1980. Melba was incorporated in 1912 while Wilder was incorporated in 1919. The City of Star annexed a portion of territory in northeast Canyon County prior to 2007, becoming the county's ninth incorporated city. The majority of Star is located within Ada County. The Idaho Legislature created Canyon County from Ada County in an act approved March 7, 1891, effective at the November 26, 1892, election. Caldwell was established as the county seat. The county originally contained all of Canyon and Payette counties and part of Gem; Gem County formed in 1915 and Payette County in 1917.

2000 census As of the 2000 census, there were 131,441 people, 45,018 households and 33,943 families living in the county. The population density was 223 people per square mile (86 people/km2). There were 47,965 housing units at an average density of 81 units per square mile (31 units/km2). The racial makeup of the county was 83.10% White, 0.32% Black or African American, 0.85% Native American, 0.80% Asian, 0.13% Pacific Islander, 12.17% from other races, and 2.62% from two or more races. Hispanic or Latino of any race were 18.61% of the population. 15.9% were of German, 12.7% English, 10.3% American and 7.6% Irish ancestry. There were 45,018 households, of which 39.80% had children under the age of 18 living with them, 60.70% were married couples living together, 10.10% had a female householder with no husband present, and 24.60% were non-families. 19.80% of all households were made up of individuals, and 8.40% had someone living alone who was 65 years of age or older. The average household size was 2.85 and the average family size was 3.28. 30.90% of the population were under the age of 18, 10.70% from 18 to 24, 28.30% from 25 to 44, 19.10% from 45 to 64, and 11.00% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 98.70 males. For every 100 females age 18 and over, there were 96.30 males. The median household income was $35,884 and the median family income was $40,377. Males had a median income of $29,418 compared with $22,044 for females. The per capita income for the county was $15,155. About 8.70% of families and 12.00% of the population were below the poverty line, including 14.50% of those under age 18 and 10.70% of those age 65 or over. Communities Cities Unincorporated communities Bowmont Huston Roswell Sunnyslope Walters Ferry, Idaho Politics Like the majority of Idaho, Canyon County is reliably Republican by comfortable margins. The last time a Democratic candidate carried the county was in 1936 by Franklin D. Roosevelt.

Kuna ( KYOO-nə) is a city in Ada County, Idaho. It is part of the Boise metropolitan area. The population was 24,011 at the time of the 2020 census. Kuna is one of the fastest-growing areas in Idaho, having nearly tripled in population between 2000 and 2010 and a nearly additional 60 percent gain between 2010 and 2020.

History Kuna originated as a railroad stop with coach transport to Boise. It is popularly believed, as cited by the Kuna Chamber of Commerce, that the translation of the name "Kuna" means "the end of the trail", but Charles S. Walgamott cites the origin of the name as a Shoshone Indian word meaning "green leaf, good to smoke." The Western Heritage Historic Byway, designated as a national as well as a state scenic byway, travels around a number of historic sites in the area. Geography Kuna's business center is approximately 18 miles (29 km) southwest of downtown Boise, the state capital. According to the United States Census Bureau, the city has a total area of 18.18 square miles (47.09 km2), of which 18.08 square miles (46.83 km2) is land and 0.10 square miles (0.26 km2) is water. South of Kuna is the Kuna Caves, a lava tube. A small seasonal creek, Indian Creek, runs through the city. It is now used as an irrigation canal, filled by the New York Canal from the Boise River Diversion Dam.

Geography Kuna's business center is approximately 18 miles (29 km) southwest of downtown Boise, the state capital. According to the United States Census Bureau, the city has a total area of 18.18 square miles (47.09 km2), of which 18.08 square miles (46.83 km2) is land and 0.10 square miles (0.26 km2) is water. South of Kuna is the Kuna Caves, a lava tube. A small seasonal creek, Indian Creek, runs through the city. It is now used as an irrigation canal, filled by the New York Canal from the Boise River Diversion Dam. One of the few small floatable waterways in the region, Indian Creek is a favorite swimming spot for local residents. Demographics 2020 census As of the 2020 census, Kuna had a population of 24,011. The median age was 30.9 years. 31.8% of residents were under the age of 18 and 8.1% of residents were 65 years of age or older. For every 100 females there were 97.8 males, and for every 100 females age 18 and over there were 96.2 males age 18 and over. 97.1% of residents lived in urban areas, while 2.9% lived in rural areas. There were 7,736 households in Kuna, of which 48.2% had children under the age of 18 living in them. Of all households, 62.3% were married-couple households, 11.6% were households with a male householder and no spouse or partner present, and 17.4% were households with a female householder and no spouse or partner present. About 13.9% of all households were made up of individuals and 4.6% had someone living alone who was 65 years of age or older. There were 7,948 housing units, of which 2.7% were vacant. The homeowner vacancy rate was 0.8% and the rental vacancy rate was 5.9%. As of the 2020 census, the median income for a household in the city was $68,017. Families had a median income of $75,296 versus $91,364 for married-couple families and $33,512 for nonfamily households.

Meridian is a city located in Ada County, Idaho, United States. The population was 117,635 at the 2020 census, making it the second most populous city in the county and Idaho, after Boise, the state capital.

Rail transportation (1908–28) Following the raising of $4,000 to lay the Interurban rail line from Onweiler (Meridian and Ustick Roads), the tracks were completed into the village center. Turning east on Broadway and ending at East Second, the last car would spend the night in Meridian before returning to Boise early the next morning with passengers and freight. The interurban Station and Generator building (west one-third of the old library at Meridian and Idaho Streets) was built in 1912, and the line continued on to Nampa via Meridian. The tracks down Broadway were not used after 1912. The Interurban Company entered into receivership and closed in 1928 after 20 years of providing continuous transportation to neighboring towns. It was Meridian's main connection to the area outside the local community. The Union Pacific Railroad spur opened in 1900 and is currently operated by the Boise Valley Railroad. Many industrial customers continue to ship forest, agricultural, and chemical products along this corridor. Creamery (1929–70) The city's official website describes the history of the Ada County Dairymen's cooperative creamery as follows:The lowest days of the Great Depression brightened for area dairymen when the Ada County Dairymen's cooperative creamery began operation in 1929. It provided milk checks to those who were members of the cooperative, enabling them to pay their taxes and provide food for their families. Other community members hauled milk to the creamery and were employed by the creamery, whose product was Challenge Butter. The creamery ran seven days a week for 40 years. Additions and improvements were made while the plant was in full operation. Later years saw the Wyeth Laboratories affiliate with the creamery to manufacture SMA baby formula.

Creamery (1929–70) The city's official website describes the history of the Ada County Dairymen's cooperative creamery as follows:The lowest days of the Great Depression brightened for area dairymen when the Ada County Dairymen's cooperative creamery began operation in 1929. It provided milk checks to those who were members of the cooperative, enabling them to pay their taxes and provide food for their families. Other community members hauled milk to the creamery and were employed by the creamery, whose product was Challenge Butter. The creamery ran seven days a week for 40 years. Additions and improvements were made while the plant was in full operation. Later years saw the Wyeth Laboratories affiliate with the creamery to manufacture SMA baby formula.