Summary
Managed by States West, this earth dam stands at a height of 207 feet and was completed in 2000 for the primary purpose of irrigation. With a storage capacity of 53,200 acre-feet and a drainage area of 11.7 square miles, the dam serves as a vital resource for water management in the region.
This high-hazard dam on Red Clay Draw has a fair condition assessment as of August 2019, with a moderate risk rating. Despite its controlled spillway and outlet gates, the dam's hazard potential is classified as high. Regular inspections and enforcement by the State of Wyoming help ensure the safety and integrity of the structure, with a 5-year inspection frequency in place. The Congressman representing the area is Liz Cheney (R), under Congressional District 00.
With its strategic location and crucial role in irrigation and recreation, Greybull Valley (1st Enl.) serves as a key water resource in the region. Its impact on the local ecosystem and community highlights the importance of sustainable water management practices and ongoing monitoring to mitigate potential risks and ensure the long-term resilience of the dam and surrounding areas.
Year Completed |
2000 |
Dam Length |
1798 |
Dam Height |
157 |
River Or Stream |
RED CLAY DRAW |
Primary Dam Type |
Earth |
Surface Area |
691 |
Hydraulic Height |
148 |
Drainage Area |
11.7 |
Nid Storage |
53200 |
Structural Height |
207 |
Outlet Gates |
Other Controlled |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
207 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Greybull River At Meeteetse
|
338cfs |
Shoshone River Below Buffalo Bill Reservoir
|
315cfs |
Bighorn River At Basin
|
996cfs |
South Fork Shoshone River Ab Buffalo Bill Res
|
72cfs |
Shoshone River Near Lovell
|
460cfs |
Bighorn River At Kane
|
1340cfs |
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.
Greybull Valley (1st Enl.)