Coleman Dam Reservoir Report
Last Updated: December 5, 2025
Coleman Dam, situated in Coleman, Texas, along the Jim Ned Creek, is a vital water resource infrastructure designed primarily for irrigation purposes.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1966 by Forrest and Cotton, this earth dam stands at a height of 90 feet, with a hydraulic height of 90 feet and a structural height of 92 feet. The dam's reservoir has a storage capacity of 91,680 acre-feet, with a normal storage level of 38,846 acre-feet, covering a surface area of 1,886 acres and draining a watershed area of 299 square miles.
The dam features an uncontrolled spillway with a width of 1,507 feet and is maintained by the Texas Commission on Environmental Quality (TCEQ) as the state regulatory agency. The dam's condition assessment as of August 2015 was deemed satisfactory, with a moderate risk rating. With a last inspection date in January 2015 and an inspection frequency of 5 years, Coleman Dam continues to play a crucial role in water supply, irrigation, recreation, and serves as a significant infrastructure for the local community in Coleman.
Despite not having associated locks, Coleman Dam is equipped with slide and valve outlet gates for operational purposes. The dam has been constructed to withstand potential hazards, although specific hazard potential information is not available. Overall, Coleman Dam stands as a testament to effective water resource management and serves as a key component in ensuring water availability for agricultural irrigation and recreational activities in the region.
Year Completed |
1966 |
Dam Length |
4700 |
Dam Height |
90 |
River Or Stream |
JIM NED CREEK |
Primary Dam Type |
Earth |
Surface Area |
1886 |
Hydraulic Height |
90 |
Drainage Area |
299 |
Nid Storage |
91680 |
Structural Height |
92 |
Outlet Gates |
Slide (sluice gate) - 2, Uncontrolled - 2, Valve - 1 |
Hazard Potential |
Not Available |
Foundations |
Soil |
Nid Height |
92 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Hords Ck Nr Coleman
|
0cfs |
Jim Ned Ck At Cr 140 Nr Coleman
|
0cfs |
Pecan Bayou Nr Cross Cut
|
436cfs |
Elm Ck At Ballinger
|
0cfs |
Cat Claw Ck At Abilene
|
0cfs |
Cedar Ck At Ih 20
|
1cfs |
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.
Coleman Dam
Lk Coleman Nr Novice