Pahsimeroi孵化器, 查理斯附近, 爱达荷州, was built in 1967 and was the last hatchery built by 靠谱的电子游艺官网 as part of its salmon and steelhead mitigation program. The hatchery produces more than 3 million steelhead eggs annually, some of which are provided to other non-靠谱的电子游艺官网 programs around the state. Many of the adult steelhead returning from the ocean each year and trapped at Pahsimeroi孵化器 are distributed to Native American tribes, 慈善机构和食物银行.
Eggs for 靠谱的电子游艺官网 production are shipped to Niagara Springs Hatchery near Wendell, 爱达荷州, 五月初. 在第二年的四月, fish are hauled in tankers back to the lower hatchery where they are released as smolts into the Pahsimeroi River to begin their 800-mile migration to the Pacific Ocean.
Pahsimeroi孵化器 also traps and spawns enough adult summer Chinook salmon to rear approximately 1 million ocean-bound smolts for release into the Pahsimeroi River each year.