Hall Lake Reservoir Report
Nearby: Kromer Mary Sherrill Bill
Last Updated: January 3, 2026
Hall Lake in Harmon, Oklahoma is a privately owned earth dam structure that was completed in 1954 for flood risk reduction purposes along the TR-Salt Fork Red River.
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Summary
The dam stands at 40 feet tall and has a maximum storage capacity of 330 acre-feet, with a normal storage capacity of 288 acre-feet. The lake covers a surface area of 36 acres and has a spillway width of 2 feet.
Despite being classified as having a low hazard potential, Hall Lake poses a very high risk due to its location and potential impact in the event of a breach. The dam is inspected every 5 years, with the last inspection taking place in August 2006, although its condition assessment is currently not rated. The structure is maintained by private owners and falls under the regulatory jurisdiction of the Oklahoma Water Resources Board.
As an enthusiast of water resources and climate, Hall Lake presents an intriguing case study in dam infrastructure and risk management. Its historical significance, design characteristics, and current risk assessment provide valuable insights into the challenges and responsibilities associated with managing water resources in a changing climate.
Year Completed |
1954 |
Dam Length |
1050 |
Dam Height |
40 |
River Or Stream |
TR-SALT FORK RED RIVER |
Primary Dam Type |
Earth |
Surface Area |
36 |
Hydraulic Height |
35 |
Nid Storage |
330 |
Structural Height |
40 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
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.
Hall Lake