Summary
2, located in Sweetwater, Wyoming, is a privately owned earth dam completed in 1937 for the primary purpose of irrigation. With a height of 8 feet and a hydraulic height of 4 feet, this dam on Bear Creek has a storage capacity of 401 acre-feet and a surface area of 111 acres. Despite its low hazard potential, the dam's condition assessment is poor, with the last inspection in October 2017 revealing maintenance issues.
The dam features an uncontrolled spillway with a width of 200 feet and one valve outlet gate. While the risk assessment indicates a moderate risk level, the dam's emergency action plan status and adherence to guidelines are unclear. The dam's location and design make it a crucial resource for water management in the region, serving not only for irrigation but also fire protection, stock watering, and small fish pond purposes. Climate and water resource enthusiasts may find Brannan No. 2 an intriguing case study in dam infrastructure maintenance and risk management in the face of changing environmental conditions.
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15-Day Weather Outlook
Year Completed |
1937 |
Dam Length |
2585 |
Dam Height |
8 |
River Or Stream |
BEAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
111 |
Hydraulic Height |
4 |
Nid Storage |
401 |
Structural Height |
8 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
8 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
Brannan No. 2