Rock Water Hole Detention Dam Reservoir Report
Last Updated: December 5, 2025
Rock Water Hole Detention Dam, located in Washakie, Wyoming, is a federal-owned structure managed by the Bureau of Land Management.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 2003, this gravity-type dam serves the primary purpose of water supply in the region. With a hydraulic height of 31 feet and a structural height of 36 feet, the dam has a storage capacity of 521.68 acre-feet, providing essential water resources for the area.
The dam's spillway, of uncontrolled type, has a width of 2 feet, ensuring proper water discharge during times of heavy rainfall. With a low hazard potential and an unsatisfactory condition assessment, the dam is regularly inspected by the Bureau of Land Management to ensure its structural integrity and safety. Despite its moderate risk level, the Rock Water Hole Detention Dam continues to play a crucial role in water management and supply in the region, highlighting the importance of sustainable water resource management in the face of climate change challenges.
As water resource and climate enthusiasts, understanding the significance of structures like the Rock Water Hole Detention Dam is essential in maintaining water security and resilience in the face of changing environmental conditions. With its strategic location and design, this dam stands as a testament to the collaborative efforts of federal agencies in safeguarding water resources for present and future generations.
Year Completed |
2003 |
Dam Length |
666 |
River Or Stream |
15 MILE |
Primary Dam Type |
Gravity |
Surface Area |
72.76 |
Hydraulic Height |
31 |
Drainage Area |
28 |
Nid Storage |
521.68 |
Structural Height |
36 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bighorn R At Worland Wyo
|
4350cfs |
Bighorn River At Basin
|
996cfs |
Greybull River At Meeteetse
|
338cfs |
Cottonwood C At High Island Rnch Nr Hamilton Dome
|
1cfs |
Shell Creek Near Shell
|
74cfs |
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.
Rock Water Hole Detention Dam