Shoshone Falls Reservoir Will Drop Next Week to Allow for Shoreline Work

TWIN FALLS, Idaho – Shoreline stabilization work along the Snake River above Shoshone Falls will require the reservoir to be lowered by about 4 feet, starting Tuesday, Sept. 7.

The City of Twin Falls boat ramp above Shoshone Falls may not be usable during the drawdown, which is expected to last 4–6 weeks. All reservoir users should be aware of potential hazards and use extreme caution when working or recreating on or around the water.

Idaho Power is addressing erosion along 500 feet of shoreline on the north side of the river. Although this mitigation work will be visible from Shoshone Falls Park, access to the park will be unaffected. Water levels at Pillar Falls and Centennial Park downstream will rise slightly during the drawdown but will return to current levels once the reservoir elevation has been lowered.

Built in 1907, the Shoshone Falls power plant includes a diversion dam and a powerhouse with the capacity to generate up to 14.7 megawatts of electricity.

About Idaho Power
Idaho Power, headquartered in vibrant and fast-growing Boise, Idaho, has been a locally operated energy company since 1916. Today, it serves a 24,000-square-mile area in Idaho and Oregon. The company’s goal to provide 100% clean energy by 2045 builds on its long history as a clean-energy leader that provides reliable service at affordable prices. With 17 low-cost hydroelectric projects at the core of its diverse energy mix, Idaho Power’s residential, business and agricultural customers pay among the nation’s lowest prices for electricity. Its 2,000 employees proudly serve more than 590,000 customers with a culture of safety first, integrity always and respect for all.

IDACORP Inc. (NYSE: IDA), Idaho Power’s independent publicly traded parent company, is also headquartered in Boise, Idaho. To learn more, visit or

Brad Bowlin
Communications Specialist
Idaho Power
208-388-2803 and