Located in Chubbuck, Idaho, the Simplot Effluent Irrigation Lagoon serves as a vital resource for irrigation purposes in the region. Completed in 1981, this earth dam structure stands at a height of 38.5 feet, with a hydraulic height of 34 feet and a length of 3800 feet. The lagoon has a storage capacity of 900 acre-feet and covers a surface area of 38 acres, drawing water from unnamed streams and the Blackfoot River for irrigation needs.

Managed by a private owner, the Simplot Effluent Irrigation Lagoon is regulated by the Idaho Department of Water Resources, ensuring proper permitting, inspection, and enforcement measures are in place. Despite being classified as having a high hazard potential, the lagoon is assessed to be in fair condition as of its last inspection in September 2019. With a maximum discharge of 210 cubic feet per second and an uncontrolled spillway type, the lagoon plays a crucial role in water resource management in the area.

As a key component of the local irrigation infrastructure, the Simplot Effluent Irrigation Lagoon provides a sustainable water source for agricultural activities in Bannock County, Idaho. With its moderate risk assessment level and emergency action plan in place, this lagoon serves as a critical resource for maintaining water supply stability and supporting the region's agricultural economy.