Scs-Okfuskee Tributaries Site-H08 Reservoir Report
Last Updated: December 8, 2025
The SCS-Okfuskee Tributaries Site-H08, located in Okfuskee County, Oklahoma, is a state-regulated earth dam designed by USDA NRCS in 1975 for flood risk reduction along the Little Hilliby Creek.
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Summary
Standing at a height of 39 feet and a length of 980 feet, this dam has a storage capacity of 502 acre-feet, with a normal storage level of 47 acre-feet and a maximum discharge of 500 cubic feet per second. Despite its low hazard potential, the risk assessment for this dam is rated as very high (1), emphasizing the importance of regular inspections and risk management measures.
The dam features a controlled spillway and a single valve outlet gate for water release. Although the condition assessment is currently listed as "Not Rated" with the last inspection conducted in 1980, the dam is inspected every five years to ensure its structural integrity and safety. While the SCS-Okfuskee Tributaries Site-H08 has not been modified since its completion, ongoing monitoring and risk assessment are crucial to mitigate potential hazards and ensure the continued protection of downstream areas from flooding events.
With its strategic location in a high-risk area, the SCS-Okfuskee Tributaries Site-H08 serves as a vital flood control structure in the region, highlighting the collaboration between state agencies and the USDA NRCS in managing water resources and mitigating climate risks. As water resource and climate enthusiasts, it is essential to recognize the significance of infrastructure like this dam in safeguarding communities and ecosystems from the impacts of extreme weather events and changing climate patterns.
Year Completed |
1975 |
Dam Length |
980 |
Dam Height |
39 |
River Or Stream |
LITTLE HILLIBY CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
39 |
Nid Storage |
502 |
Structural Height |
39 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
39 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River At Shawnee
|
166cfs |
Deep Fork At Warwick
|
23cfs |
Deep Fork Near Beggs
|
128cfs |
North Canadian River Near Wetumka
|
200cfs |
Little River Near Tecumseh
|
7cfs |
Cimarron River Near Ripley
|
528cfs |
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-Okfuskee Tributaries Site-H08