Mark Overton Gss # 1 Reservoir Report
Nearby: Oknoname 083041 Oknoname 22265
Last Updated: December 17, 2025
Mark Overton Gss #1 is a privately owned dam located in Covington, Oklahoma, designed by NRCS and regulated by the OWRB.
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Summary
This earth dam, standing at a height of 22 feet and a hydraulic height of 11.2 feet, serves the primary purpose of flood risk reduction. With a normal storage capacity of 27.76 acre-feet and a maximum discharge of 1.7 cubic feet per second, the dam covers a surface area of 4.83 acres and drains an area of 1.06 square miles.
Despite being classified with a low hazard potential, Mark Overton Gss #1 is considered to have a very high risk level, with a risk assessment rating of 1. The dam has not been rated for its condition assessment, and the last inspection was conducted in December 2010. The dam features a controlled spillway with a width of 1 foot and has one valve as its outlet gate. While there have been no modifications in recent years and the Emergency Action Plan status is unknown, the dam is inspected every five years to ensure its safety and compliance with regulations.
Dam Length |
300 |
Dam Height |
22 |
Primary Dam Type |
Earth |
Surface Area |
4.83 |
Hydraulic Height |
11.2 |
Drainage Area |
1.06 |
Nid Storage |
91.28 |
Structural Height |
20.7 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Skeleton Creek Near Lovell
|
27cfs |
Cimarron River Near Guthrie
|
453cfs |
Skeleton Creek At Enid
|
6cfs |
Cottonwood Creek Near Seward
|
64cfs |
Cimarron River Near Dover
|
304cfs |
Cimarron River Near Ripley
|
493cfs |
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.
Mark Overton Gss # 1