Ernst Reservoir Report
Last Updated: January 11, 2026
Ernst is a privately owned dam located in Custer, Oklahoma, with a primary purpose classified as 'Other'.
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Summary
Built in 1960, this Earth-type dam stands at a height of 26 feet and has a maximum storage capacity of 50 acre-feet. With a spillway type categorized as 'Controlled' and a low hazard potential, Ernst plays a crucial role in managing water resources in the area.
Situated on TR-DEER CR in the city of HYDRO, Ernst is regulated by the Oklahoma Water Resources Board and undergoes regular inspections to ensure its structural integrity. The dam features a stone core and soil foundation, with one valve serving as the outlet gate. Despite its age, Ernst has a very high risk assessment rating of 1, emphasizing the importance of proactive risk management measures in safeguarding against potential hazards and ensuring the safety of the surrounding community.
With a surface area of 4 acres and a drainage area yet to be specified, Ernst serves as a vital component of the water infrastructure in the region. The dam's significant role in flood control and water storage highlights the importance of continued maintenance and monitoring to mitigate risks and ensure its operational effectiveness in the face of changing climate conditions.
Year Completed |
1960 |
Dam Length |
380 |
Dam Height |
26 |
River Or Stream |
TR-DEER CR |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
14 |
Nid Storage |
50 |
Structural Height |
26 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
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.
Ernst