Coker Lake Reservoir Report
Last Updated: December 6, 2025
Coker Lake, located in Union, Mississippi, is a private recreational reservoir built in 1972 by the USDA NRCS.
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Summary
The earth dam stands at 16 feet high and stretches 200 feet in length, with a maximum storage capacity of 72 acre-feet. The reservoir is fed by the TR-Darling Branch in the Os stream system, and its primary purpose is for recreation.
Despite being classified as having a low hazard potential, Coker Lake is considered to have a moderate risk level of 3. The spillway is uncontrolled, with a width of 14 feet, and outlet gates are also uncontrolled. The condition assessment of the dam is currently not rated, and there is no information available on the last inspection date or frequency. Emergency action plans and inundation maps have not been prepared, raising concerns about the management of potential risks associated with the reservoir.
Water resource and climate enthusiasts interested in Coker Lake may find it intriguing due to its unique design features and the lack of regulatory oversight. The reservoir's location in a rural area adds to its charm, offering a peaceful retreat for outdoor activities. However, the lack of detailed information on safety measures and inspections raises questions about the overall management of the dam and the potential risks it poses to the surrounding community and environment.
Year Completed |
1972 |
Dam Length |
200 |
Dam Height |
16 |
River Or Stream |
TR- DARLING BRANCH -OS |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
72 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Twentymile Creek Nr Guntown
|
36cfs |
Town Creek At Eason Boulevard At Tupelo
|
65cfs |
Little Tallahatchie River At Etta
|
220cfs |
Tombigbee River Nr Fulton
|
182cfs |
Cummings Creek Nr Fulton
|
26cfs |
Town Creek Nr Nettleton
|
218cfs |
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.
Coker Lake