Summary
Completed in 1970, this concrete dam serves primarily for navigation purposes but also supports fish and wildlife ponds, hydroelectric power generation, and recreational activities. With a hydraulic height of 98 feet and a structural height of 226 feet, the dam boasts a controlled spillway with a width of 400 feet and a single lock measuring 668 feet in length and 86 feet in width.
Despite its high hazard potential, the dam is equipped with an Emergency Action Plan (EAP) that meets guidelines and includes inundation maps to aid in risk assessment and management. The US Army Corps of Engineers actively monitors and maintains the dam to address all types of flood risks, collaborating with local emergency managers and the public to ensure preparedness and response in the event of a dam-related emergency. Overall, Little Goose Lock and Dam exemplifies the importance of sustainable water resource management and climate resilience efforts in ensuring the safety and integrity of critical infrastructure in the face of evolving environmental challenges.
Year Completed |
1970 |
Dam Length |
2655 |
River Or Stream |
SNAKE RIVER |
Primary Dam Type |
Concrete |
Surface Area |
10025 |
Length Of Locks |
668 |
Hydraulic Height |
98 |
Drainage Area |
103900 |
Nid Storage |
565200 |
Structural Height |
226 |
Hazard Potential |
High |
Nid Height |
226 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Little Goose Landing
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Texas Rapids - Snake River
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Riparia Park - Snake River
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Texas Rapids (ACE)
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lyons ferry KOA
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Lyons Ferry Park
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Little Goose Lock And Dam