Scs-Ionine Creek Site-101 Reservoir Report
Last Updated: January 11, 2026
SCS-Ionine Creek Site-101 in Chickasha, Oklahoma, is a state-regulated earth dam constructed in 1961 by the USDA NRCS for flood risk reduction purposes.
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Summary
The dam stands at 15 feet high with a hydraulic height of 11 feet and a structural height of 14 feet. It has a length of 780 feet and a storage capacity of 50 acre-feet, with a normal storage level of 25 acre-feet. The dam is located on TR-East Ionine Creek in Grady County, Oklahoma, and is under the regulatory oversight of the Oklahoma Water Resources Board (OWRB).
Despite its low hazard potential, SCS-Ionine Creek Site-101 is considered to have a very high risk level according to a rating of 1. The dam features a controlled spillway, with one valve outlet gate for water release. The last inspection of the dam was conducted in 1980, with an inspection frequency of every 5 years. The dam is currently in a not-rated condition assessment, with no emergency action plan (EAP) prepared or updated. Although the risk assessment indicates a high level of risk, the dam remains an essential infrastructure for flood risk reduction in the area and is subject to ongoing regulatory oversight and maintenance by the OWRB.
In conclusion, SCS-Ionine Creek Site-101 serves as a critical flood risk reduction structure in Grady County, Oklahoma. Despite its age and risk level, the dam continues to provide vital protection to the surrounding area. Ongoing inspections and regulatory oversight by the OWRB ensure that the dam remains in a safe and functional condition for the community. As water resource and climate enthusiasts, it is important to monitor the status of such infrastructure to ensure the safety and resilience of our water systems in the face of changing environmental conditions.
Year Completed |
1961 |
Dam Length |
780 |
Dam Height |
15 |
River Or Stream |
TR-EAST IONINE CR |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
11 |
Nid Storage |
50 |
Structural Height |
14 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
15 |
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.
Scs-Ionine Creek Site-101