Dennis Hall Reservoir Report
Nearby: Fowler Mcgee No 1
Last Updated: December 5, 2025
Dennis Hall is a privately owned irrigation dam located in Bryan County, Oklahoma.
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Summary
Constructed in 1977 by the USDA NRCS, this earth dam stands at a height of 16 feet and has a length of 939 feet. With a storage capacity of 60 acre-feet and a maximum discharge of 255 cubic feet per second, it serves the primary purpose of irrigation, covering a surface area of 12 acres and draining a small area of 0.16 square miles.
Despite being privately owned and not regulated by the state, Dennis Hall is classified as having a low hazard potential and a moderate risk assessment rating of 3. This uncontrolled spillway dam has a spillway width of 47 feet and is situated in the Fort Worth District, with no associated locks or gates. The condition of the dam is currently not rated, and it has not undergone recent inspections or maintenance activities. While it may not be under the jurisdiction of state agencies, Dennis Hall plays a crucial role in water resource management and agricultural activities in the region.
Water resource and climate enthusiasts interested in the Dennis Hall irrigation dam in Oklahoma will find its history and specifications intriguing. Built for agricultural purposes and managed by private owners, this earth dam stands as a testament to the importance of water management in sustaining local ecosystems and supporting irrigation needs. With its unique characteristics and risk assessment profile, Dennis Hall serves as a valuable asset in the region's water infrastructure, highlighting the intersection between human development and environmental conservation in the face of changing climate conditions.
Year Completed |
1977 |
Dam Length |
939 |
Dam Height |
16 |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
16 |
Drainage Area |
0.16 |
Nid Storage |
60 |
Hazard Potential |
Low |
Nid Height |
16 |
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.
Dennis Hall