G&H Decoy Reservoir Report
Nearby: Oknoname 111072 Eagle Picher Ind
Last Updated: January 12, 2026
G&H Decoy, located in Okmulgee, Oklahoma, is a privately-owned earth dam completed in 1953 on TR-Coal Creek.
°F
°F
mph
Wind
%
Humidity
Summary
Standing at 25 feet high and 3,350 feet long, this dam serves a primary purpose of "Other" and has a low hazard potential. The dam has a storage capacity of 50 acre-feet and features a controlled spillway with a width of 1 foot. Despite being state-regulated by the Oklahoma Water Resources Board, the dam's condition assessment is currently listed as "Not Rated."
With a very high risk assessment rating of 1, G&H Decoy is considered to be at significant risk of failure. Although the dam has not been inspected since 2001, it is equipped with a single valve outlet gate and has not undergone any modifications in recent years. The emergency action plan (EAP) status for the dam is unclear, as there is no information available regarding its preparation or last revision date. Given the potential consequences of a dam failure in this very high-risk scenario, it is crucial that proper risk management measures are implemented to mitigate any potential hazards associated with G&H Decoy.
Year Completed |
1953 |
Dam Length |
3350 |
Dam Height |
25 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
50 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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.
G&H Decoy