Oknoname 051031 Reservoir Report
Nearby: Oknoname 051034 Oknoname 051033
Last Updated: January 12, 2026
Oknoname 051031 is a privately-owned earth dam located in Chickasha, Oklahoma, along TR-Rock Hollow Creek.
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Summary
Built in 1960, this structure stands at 26 feet tall and spans 350 feet in length, with a storage capacity of 120 acre-feet. The dam serves a primary purpose labeled as "Other," with a spillway type classified as "Controlled" and a hazard potential deemed "Low." It is regulated by the Oklahoma Water Resources Board and is subject to state jurisdiction, permitting, inspection, and enforcement.
Despite its low hazard potential, Oknoname 051031 poses a very high risk according to a risk assessment rating of 1. The dam is equipped with one valve outlet gate, and its last inspection was conducted in August 2010 with a scheduled inspection frequency of every 5 years. While the condition assessment is currently marked as "Not Rated," the risk management measures and emergency action plans for this structure are not specified. With its location in Grady County and a maximum discharge capacity of 2480 cubic feet per second, Oknoname 051031 stands as a crucial piece of infrastructure in the region's water resource management efforts.
Year Completed |
1960 |
Dam Length |
350 |
Dam Height |
26 |
River Or Stream |
TR-ROCK HOLLOW CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
26 |
Nid Storage |
120 |
Structural Height |
26 |
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.
Oknoname 051031