Ehmann Reservoir Report
Last Updated: December 5, 2025
Ehmann, Frank Det.
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Summary
#2, located in Byers, Colorado, is a private dam designed by the US Soil Conservation Service and completed in 1969 for flood risk reduction on Middle Bijou Creek. The dam is 23 feet high with a hydraulic height of 24 feet and a structural height of 28 feet. With a storage capacity of 186 acre-feet, it serves purposes such as fire protection, stock watering, and flood risk mitigation. The dam has a low hazard potential and a moderate risk assessment rating, making it an important structure for water resource management in the area.
Owned privately, Ehmann, Frank Det. #2 is regulated by the Colorado Division of Water Resources and meets state permitting, inspection, and enforcement requirements. The dam has a spillway width of 143 feet and an uncontrolled spillway type. Although the condition assessment is currently not rated, the dam has undergone inspections in the past, with the last inspection conducted in July 1991. With its strategic location and design features, the dam plays a crucial role in protecting the surrounding area from potential flooding events.
Supported by the Natural Resources Conservation Service, Ehmann, Frank Det. #2 stands as a key infrastructure for water management in Elbert County, Colorado. With its earth dam type and stone core construction, the dam covers a surface area of 16 acres and has a drainage area of 2 square miles. The dam's maximum discharge capacity is 2538 cubic feet per second, ensuring effective flood control measures for the region. As a vital component of the local water resource infrastructure, Ehmann, Frank Det. #2 exemplifies the importance of sustainable water management practices in mitigating climate-related risks.
Year Completed |
1969 |
Dam Length |
901 |
Dam Height |
23 |
River Or Stream |
MIDDLE BIJOU CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
24 |
Drainage Area |
2 |
Nid Storage |
186 |
Structural Height |
28 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
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.
Ehmann, Frank Det. #2