However, most of the reservoir is located in Blaine County.
At its creation in March 1895, Blaine County included five other present-day counties.
It is estimated that 2,540 people from outside the county commute to work in Blaine County.
The population here in Blaine County peaked in 1940 at more than 9,500.
On Thursday afternoon, she had gone to the grocery store, to the courthouse in rural Blaine County and to a gas station.
The main industry in Blaine County is Agriculture.
But there is at least one oddity: Blaine County, Idaho, population 18,991.
After his tent burnt down, he moved to Blaine County, Idaho to live with a daughter.
It is the county seat of Blaine County.
The town was home to "the oldest bank in Blaine County."