Lois Powers Pond Reservoir Report
Nearby: Oknoname 30048 Oknoname 30049
Last Updated: December 6, 2025
Located in Harmon, Oklahoma, Lois Powers Pond is a privately owned reservoir designed by USDA NRCS for multiple purposes, including water resource management and climate resilience.
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Summary
This earth dam structure, completed in 2002, stands at a height of 25.7 feet with a storage capacity of 69.9 acre-feet. The reservoir spans 3.5 acres and serves as a critical water source for the surrounding area, regulated by the Oklahoma Water Resources Board.
Managed by the Natural Resources Conservation Service, Lois Powers Pond is a vital component of the Washita River watershed, with a controlled spillway and a low hazard potential. Despite being labeled as "Not Rated" for its condition assessment, the reservoir plays a crucial role in flood control and irrigation for the region. With a drainage area of 523 square miles and a maximum discharge of 304 cubic feet per second, the pond is a key infrastructure ensuring water availability and ecosystem sustainability in the area.
With its very high risk assessment ranking, Lois Powers Pond demands careful monitoring and oversight to maintain its structural integrity and functionality. While currently not rated for condition assessment, the reservoir's low hazard potential emphasizes the importance of proactive risk management and emergency preparedness. As a significant water resource in the region, this earth dam structure underscores the intersection of water management, climate adaptation, and sustainable development in ensuring the resilience of local communities and ecosystems.
Year Completed |
2002 |
Dam Length |
420 |
Dam Height |
25.7 |
River Or Stream |
WASHITA RIVER |
Primary Dam Type |
Earth |
Surface Area |
3.5 |
Hydraulic Height |
25.7 |
Drainage Area |
523 |
Nid Storage |
69.9 |
Structural Height |
25.7 |
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.
Lois Powers Pond
Foss Reservoir Near Foss