John Paul Hinz Reservoir Report
Nearby: Oknoname 051042 Oknoname 051044
Last Updated: December 8, 2025
John Paul Hinz is a privately owned earth dam located in Grady, Oklahoma, specifically in the Gyp Creek area.
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Summary
Built in 1983 by the USDA NRCS, this dam serves multiple purposes including fire protection, stock, and small fish pond management. With a height of 31 feet and a length of 382 feet, John Paul Hinz has a storage capacity of 66 acre-feet and a drainage area of 0.75 square miles.
Managed by the Natural Resources Conservation Service, John Paul Hinz has a low hazard potential and has not been rated for its condition assessment. Despite its age, this dam remains in moderate risk according to the available data. With a spillway width of 45 feet and a maximum discharge of 983 cubic feet per second, John Paul Hinz is equipped to handle potential emergencies but lacks updated emergency action plans and risk management measures.
While John Paul Hinz has not been inspected recently and lacks certain emergency preparedness protocols, it stands as a vital structure for water resource management in the area. As a point of interest for water resource and climate enthusiasts, this dam provides insight into the infrastructure challenges and opportunities for improvement in the region.
Year Completed |
1983 |
Dam Length |
382 |
Dam Height |
31 |
River Or Stream |
GYP CR |
Primary Dam Type |
Earth |
Hydraulic Height |
31 |
Drainage Area |
0.75 |
Nid Storage |
66 |
Hazard Potential |
Low |
Nid Height |
31 |
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.
John Paul Hinz