Hill James L Reservoir Report
Nearby: Oknoname 051014 No Name
Last Updated: December 7, 2025
Located in Grady, Oklahoma, the Hill James L dam stands as a testament to the state's commitment to water resource management and climate resilience.
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Summary
Completed in 1960, this earth dam on WEST WINTER CR serves a primary purpose that is categorized as "Other", with a low hazard potential and a very high risk assessment rating. Despite its age, the dam remains in good condition and is regulated, inspected, and enforced by the Oklahoma Water Resources Board.
With a height of 30 feet and a length of 450 feet, the Hill James L dam has a storage capacity of 100 acre-feet, making it an essential infrastructure for water supply and flood control in the area. The dam features a controlled spillway and a single valve outlet gate for water release. While the dam has not been rated for condition assessment, its risk management measures are deemed sufficient to address potential emergencies.
For water resource and climate enthusiasts, the Hill James L dam serves as a prime example of responsible infrastructure development and maintenance. As a privately owned structure, it plays a crucial role in safeguarding the surrounding community from flooding and managing water resources effectively. With regular inspections and a comprehensive risk assessment in place, the dam stands as a reliable asset in Oklahoma's efforts to ensure water security and resilience in the face of changing climate conditions.
Year Completed |
1960 |
Dam Length |
450 |
Dam Height |
30 |
River Or Stream |
WEST WINTER CR |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
100 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Criner Creek Near Criner
|
1cfs |
Washita River At Alex
|
243cfs |
Little Washita River East Of Ninnekah
|
19cfs |
Canadian River At Norman
|
211cfs |
Walnut Creek At Purcell
|
31cfs |
Canadian River At Purcell
|
212cfs |
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.
Hill James L