Sprowls Gss 1x Reservoir Report
Last Updated: December 10, 2025
Located in Roger Mills County, Oklahoma, the Sprowls Gss 1x dam is a privately owned structure designed by the USDA NRCS and regulated by the OWRB.
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Summary
Completed in 1999, this earth-type dam stands at a height of 23.6 feet and serves multiple purposes, with a normal storage capacity of 8.1 acre-feet. The dam spans 23.6 feet in length, with a storage area of 12.31 acres and a drainage area of 512 square miles, allowing for a maximum discharge of 56.3 cubic feet per second.
With a low hazard potential and a very high risk assessment rating, the Sprowls Gss 1x dam is equipped with a controlled spillway and a single valve outlet gate for water management. Despite the dam not being rated for its condition, it undergoes inspections every five years to ensure its structural integrity and safety. While the dam has not been modified in recent years, its emergency action plan readiness and risk management measures remain unspecified, calling for potential improvements in these areas to enhance its resilience to natural disasters and climate-related events.
Water resource and climate enthusiasts may find the Sprowls Gss 1x dam a fascinating study in dam engineering and management, with its strategic location in Sandstone Creek and contribution to water storage in the region. The collaboration between private ownership, governmental regulation, and design expertise underscores the importance of multi-stakeholder cooperation in ensuring the safety and efficiency of water infrastructure. As efforts to address climate change intensify, understanding the role of dams like the Sprowls Gss 1x in water resource management becomes increasingly crucial for sustainable development and resilience against environmental challenges.
Year Completed |
1999 |
Dam Length |
23.6 |
Dam Height |
23.6 |
River Or Stream |
SANDSTONE CREEK |
Primary Dam Type |
Earth |
Surface Area |
12.31 |
Hydraulic Height |
18.6 |
Drainage Area |
512 |
Nid Storage |
78.83 |
Structural Height |
25.6 |
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.
Sprowls Gss 1x