Gammill Jd Reservoir Report
Nearby: Okname 30144 Oknoname 063011
Last Updated: December 6, 2025
Gammill Jd is a private dam located in Mellette, Oklahoma, on the TR-Middle Creek.
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Summary
Built in 1975, this earth dam stands at a height of 17 feet and has a storage capacity of 180 acre-feet. The dam is regulated by the Oklahoma Water Resources Board and is equipped with a controlled spillway and one outlet valve.
Despite its low hazard potential, Gammill Jd is categorized as having a very high risk, indicating the need for proactive risk management measures. The dam has not been rated for its condition assessment, and the last inspection took place in 2011. With a regular inspection frequency of 5 years, it is crucial to ensure that the dam is well-maintained to prevent any potential risks to the surrounding area.
Owned by a private entity, Gammill Jd plays a vital role in water resource management in the region. With its strategic location and significant storage capacity, the dam serves as a key infrastructure for regulating water flow and storage. As climate change continues to impact water resources, it is essential to monitor and maintain structures like Gammill Jd to ensure the safety and security of the surrounding communities and the environment.
Year Completed |
1975 |
Dam Length |
3710 |
Dam Height |
17 |
River Or Stream |
TR-MIDDLE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
180 |
Structural Height |
17 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River Near Wetumka
|
209cfs |
Canadian River At Calvin
|
361cfs |
Little River Near Sasakwa
|
12cfs |
Deep Fork Near Beggs
|
141cfs |
North Canadian River At Shawnee
|
177cfs |
Canadian River Near Whitefield
|
1190cfs |
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.
Gammill Jd