Scs-Waterfall-Gilford Creek Site-09 Reservoir Report
Last Updated: December 6, 2025
SCS-Waterfall-Gilford Creek Site-09, located in McCurtain, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS for flood risk reduction on the Holly Branch river.
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Summary
Completed in 1980, this dam stands at 27 feet high with a hydraulic height of 24 feet and a length of 560 feet. With a normal storage capacity of 60 acre-feet and a maximum storage of 521 acre-feet, this dam plays a crucial role in mitigating flood risks in the area.
Despite being categorized as low hazard potential, the dam at SCS-Waterfall-Gilford Creek Site-09 has a very high risk assessment rating. The dam features a controlled spillway with a width of 1 foot and an outlet gate consisting of a single valve. While the condition assessment is marked as "Not Rated," the dam undergoes inspections every 5 years, the last of which took place on January 1, 1980. The dam also lacks an Emergency Action Plan (EAP) and inundation maps, raising concerns about emergency preparedness in the event of a dam failure.
For water resource and climate enthusiasts, SCS-Waterfall-Gilford Creek Site-09 presents an intriguing case study in dam infrastructure management and risk assessment. With a focus on flood risk reduction, this state-regulated dam in Oklahoma serves as a critical piece of infrastructure in the region. However, the high-risk assessment rating and lack of recent condition assessments and emergency preparedness measures highlight the importance of continued monitoring and maintenance to ensure the safety and effectiveness of this vital water resource structure.
Year Completed |
1980 |
Dam Length |
560 |
Dam Height |
27 |
River Or Stream |
HOLLY BRANCH |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
24 |
Nid Storage |
521 |
Structural Height |
27 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little River Blw Lukfata Creek
|
572cfs |
Red River Near De Kalb
|
1160cfs |
Mountain Fork Near Eagletown
|
2040cfs |
Glover River Near Glover
|
342cfs |
Little River Near Horatio
|
3450cfs |
Cuthand Ck At Fm 910 Nr Cuthand
|
0cfs |
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.
Scs-Waterfall-Gilford Creek Site-09