Oknoname 049010 Reservoir Report
Last Updated: December 12, 2025
Oknoname 049010, located in Garvin County, Oklahoma, is a privately owned earth dam with a primary purpose of "Other." Constructed in 1950, this dam stands at a height of 20 feet and has a storage capacity of 60 acre-feet.
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Summary
The dam, situated on TR-East Rock Creek, serves the community of Elmore City with a normal storage capacity of 30 acre-feet and a maximum discharge rate of 800 cubic feet per second.
Owned and regulated by the Oklahoma Water Resources Board (OWRB), Oknoname 049010 has a low hazard potential and has not been rated for its condition. Despite being inspected in December 2010 and meeting state regulatory standards, the dam is considered to have a very high risk level due to its location and structural characteristics. With a controlled spillway and one valve outlet gate, this dam plays a crucial role in managing water resources in the area, but faces potential risks that need to be carefully monitored and managed to ensure the safety of the surrounding community.
Year Completed |
1950 |
Dam Length |
275 |
Dam Height |
20 |
River Or Stream |
TR-EAST ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
20 |
Nid Storage |
60 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Pauls Valley
|
329cfs |
North Criner Creek Near Criner
|
1cfs |
Walnut Creek At Purcell
|
28cfs |
Canadian River At Purcell
|
201cfs |
Washita River At Alex
|
236cfs |
Rock Creek At Sulphur
|
8cfs |
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 049010