Sprowls Robert N Reservoir Report
Nearby: Sprowles No 1 Sprowles No 3
Last Updated: December 11, 2025
Located in Roger Mills, Oklahoma, the Sprowls Robert N dam is a private structure designed by USDA NRCS with a primary purpose of flood risk reduction.
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Summary
Completed in 1978, this earth type dam stands at 25 feet tall with a storage capacity of 70 acre-feet. The dam, regulated by the OWRB and inspected by state authorities, has a controlled spillway and a low hazard potential.
With a risk assessment rating of very high (1), the Sprowls Robert N dam is deemed to be in a critical condition, although it has not been officially rated. Despite its condition, the dam has not undergone any modifications since its completion and meets state regulatory guidelines for inspection and enforcement. The dam's emergency action plan status, risk management measures, and inundation maps are currently not available, emphasizing the need for continued monitoring and maintenance to ensure its effectiveness in flood risk reduction for the surrounding area.
Year Completed |
1978 |
Dam Height |
25 |
River Or Stream |
TR-BEAVER DAM CR |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
25 |
Nid Storage |
70 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
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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.
Sprowls Robert N