Twin Forks Reservoir Report
Nearby: Enl. Little Soda Scs Beaver Creek
Last Updated: December 5, 2025
Twin Forks is a privately owned dam located in the Skull Creek Oil Field in Weston, Wyoming.
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Summary
Built in 1959, this earth dam stands at a height of 42 feet and serves multiple purposes including fire protection, stock, and a small fish pond. With a normal storage capacity of 106 acre-feet and a maximum storage capacity of 133 acre-feet, the dam covers a surface area of 8 acres and is situated along the North Fork Deer Draw river or stream.
Despite being classified as having a low hazard potential, Twin Forks is currently in poor condition according to a recent assessment conducted in May 2021. The dam's inspection frequency is set at 5 years, with the last inspection date being in May 2021. It is important to note that the dam does not have any outlet gates and features an uncontrolled spillway with a width of 30 feet. With a moderate risk assessment rating of 3, it is crucial for stakeholders and regulators to prioritize necessary maintenance and risk management measures to ensure the safety and stability of Twin Forks in the face of potential climate-related challenges.
Year Completed |
1959 |
Dam Length |
309 |
Dam Height |
42 |
River Or Stream |
NORTH FORK DEER DRAW |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
35 |
Nid Storage |
133 |
Structural Height |
40 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
42 |
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.
Twin Forks