Hart 1 Reservoir Report
Last Updated: December 9, 2025
Hart 1, a private-owned dam located in Garvin, Oklahoma, plays a vital role in irrigation by harnessing the waters of an unnamed tributary to Rush Creek.
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Summary
With a height of 27 feet and a length of 775 feet, Hart 1 has a storage capacity of 100 acre-feet, providing water for agricultural purposes in the region. The dam has a low hazard potential and is currently not rated for its condition assessment.
Managed by the Oklahoma Water Resources Board (OWRB), Hart 1 is subject to state regulation, permitting, inspection, and enforcement to ensure its safety and functionality. While the dam's emergency action plan (EAP) status and risk assessment details are not available, it is reassuring to know that measures are in place to address any potential risks or emergencies that may arise. With its location in a congressional district in Oklahoma, Hart 1 stands as a testament to the importance of water resource management and infrastructure for sustainable agriculture in the region.
Dam Length |
775 |
Dam Height |
27 |
River Or Stream |
Unnamed Tributary to Rush Creek |
Surface Area |
7.6 |
Hydraulic Height |
27 |
Drainage Area |
0.41 |
Nid Storage |
100 |
Structural Height |
33 |
Hazard Potential |
Low |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Pauls Valley
|
335cfs |
North Criner Creek Near Criner
|
1cfs |
Washita River At Alex
|
239cfs |
Walnut Creek At Purcell
|
29cfs |
Canadian River At Purcell
|
201cfs |
Little Washita River East Of Ninnekah
|
18cfs |
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.
Hart 1