Blue Bank Res Reservoir Report
Nearby: Redland Buffalo No.1 Detention Dam
Last Updated: December 5, 2025
Blue Bank Reservoir, located in Washakie, Wyoming, is a Federal-owned water supply reservoir managed by the Bureau of Land Management.
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Summary
The reservoir, completed in 2003, has a storage capacity of 33.6 acre-feet and serves the primary purpose of water supply. It is situated along the Blue Bank Draw Nowood River and covers a surface area of 3.48 acres with a drainage area of 80 square miles.
The dam at Blue Bank Reservoir is a gravity type structure with a hydraulic height of 20 feet and a structural height of 28 feet. The reservoir has a low hazard potential and a poor condition assessment, with the last inspection conducted in August 2016. Despite its poor condition, the reservoir poses a moderate risk and is regulated by the State of Wyoming, with permitting, inspection, and enforcement processes in place to ensure its safety and functionality. Blue Bank Reservoir is a vital water resource in the region, contributing to water supply and management efforts in the area.
Year Completed |
2003 |
Dam Length |
325 |
River Or Stream |
BLUE BANK DRAW NOWOOD RIVER |
Primary Dam Type |
Gravity |
Surface Area |
3.48 |
Hydraulic Height |
20 |
Drainage Area |
80 |
Nid Storage |
33.6 |
Structural Height |
28 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
28 |
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.
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Blue Bank Res