Upper Cogdill Reservoir Report
Nearby: Lower Cogdill B-2
Last Updated: December 5, 2025
Upper Cogdill, located in Moffat County, Colorado, is a private Earth dam completed in 1956 with a primary purpose of serving as a Fish and Wildlife Pond.
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Summary
This water resource, situated along Government Coral Creek, has a dam height of 30 feet and a capacity of 73 acre-feet. With a surface area of 7 acres and a normal storage level of 45 acre-feet, Upper Cogdill provides essential water for fire protection, stock, and small fish pond in addition to its primary purpose.
Maintained and regulated by the Colorado Division of Water Resources, Upper Cogdill has a low hazard potential and fair condition assessment as of the last inspection in July 2015. The dam has a moderate risk level with a flood discharge capacity of 526 cubic feet per second and an uncontrolled spillway width of 25 feet. Despite its age, Upper Cogdill continues to play a crucial role in supporting the local ecosystem and water supply needs while maintaining a balance between human and environmental interests.
For water resource and climate enthusiasts, Upper Cogdill serves as a significant landmark in the region, showcasing the intersection of human engineering and natural resource conservation. With its historical significance dating back to the mid-20th century, this dam stands as a testament to responsible water management practices and the importance of maintaining infrastructure for the benefit of both wildlife and local communities. As climate change impacts water resources, understanding and preserving sites like Upper Cogdill become increasingly vital for sustainable water management and ecosystem resilience.
Year Completed |
1956 |
Dam Length |
200 |
Dam Height |
30 |
River Or Stream |
GOVERNMENT CORAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
29 |
Nid Storage |
73 |
Structural Height |
29 |
Hazard Potential |
Low |
Nid Height |
30 |
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.
Upper Cogdill