Ravenscroft Diversion Reservoir Report

Last Updated: December 18, 2025

Ravenscroft Diversion, located in Gooding, Idaho, is a hydroelectric facility built in 1983 by J.U.B.


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Summary

Engineers and Owner. With a primary purpose of generating hydroelectric power, the dam stands at a height of 10 feet and has a length of 700 feet. It has a maximum storage capacity of 200 acre-feet and serves a drainage area of 2990 square miles. The dam's spillway, which is uncontrolled, has a width of 270 feet.

The Ravenscroft Diversion plays a crucial role in managing the flow of the Malad River and providing water for various purposes, including fish and wildlife preservation. Despite being regulated by the Federal Energy Regulatory Commission, the dam has a low hazard potential and a moderate risk assessment rating. The facility is equipped with one Tainter (radial) outlet gate and undergoes inspections every three years, with the last inspection conducted in February 2018. While the condition assessment is not available, the dam is considered to meet safety guidelines and poses a low risk to the surrounding area.

As a significant feature in the water resource infrastructure of Idaho, Ravenscroft Diversion contributes to the sustainable utilization of water resources and supports the local ecosystem. Its strategic location and design make it a key player in the conservation of water and the generation of clean energy. With its long history of operation and consistent adherence to safety protocols, Ravenscroft Diversion stands as a reliable asset in the region's efforts to balance water resource management with environmental conservation and energy production.

Year Completed

1983

Dam Length

700

Dam Height

10

River Or Stream

Malad River

Hydraulic Height

10

Drainage Area

2990

Nid Storage

200

Structural Height

10

Outlet Gates

Tainter (radial) - 1

Hazard Potential

Low

Nid Height

10
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.