Ruble # Gp-4 Reservoir Report
Nearby: Ruble Gp #5 Smith #4
Last Updated: December 23, 2025
Located in Harper County, Oklahoma, Ruble # Gp-4 is a private earth dam constructed in 1959 by the USDA NRCS to manage water resources along Sand Creek.
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Summary
Standing at 32 feet tall and stretching 161 feet in length, the dam has a storage capacity of 21 acre-feet and serves a drainage area of 0.13 square miles. Despite being classified as having a low hazard potential, the dam's risk assessment indicates a moderate level of risk, suggesting the need for careful monitoring and management.
With a spillway width of 15 feet and an uncontrolled spillway type, Ruble # Gp-4 plays a crucial role in flood control and water storage in the region. While it is not currently under state jurisdiction or regulation, the dam's condition assessment is noted as “Not Rated,” indicating the need for a comprehensive evaluation to determine its structural integrity and maintenance needs. The dam's location in Fort Supply, near the city of FORT SUPPLY, underscores its importance in supporting agricultural activities and maintaining water quality in the area.
As water resource and climate enthusiasts continue to monitor the impact of climate change on water systems, the data on Ruble # Gp-4 provides valuable insights into the infrastructure supporting water management in rural Oklahoma. With the potential for increased precipitation and extreme weather events, the risk management measures for the dam will be critical in ensuring the safety and sustainability of the surrounding community. Further assessments and maintenance efforts will be essential to safeguarding the dam's functionality and mitigating potential risks in the future.
Year Completed |
1959 |
Dam Length |
161 |
Dam Height |
32 |
River Or Stream |
SAND CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
32 |
Drainage Area |
0.13 |
Nid Storage |
21 |
Hazard Potential |
Low |
Nid Height |
32 |
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.
Ruble # Gp-4