Nan Hatty Tank Dam Reservoir Report
Last Updated: December 5, 2025
Nan Hatty Tank Dam, located in Coke County, Texas, serves a variety of purposes including fire protection, stock, and as a small fish pond.
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Summary
Built in 1959, this earth dam stands at a height of 20 feet and has a length of 290 feet. The dam has a storage capacity of 228 acre-feet, with a normal storage level of 114 acre-feet.
Despite its age, Nan Hatty Tank Dam has not been rated for its current condition, but has been assessed as having a high risk potential. The dam does not have a spillway and only has one outlet gate. It is privately owned and is not regulated by the state. The risk assessment for this dam is classified as High (2), but further details on risk management measures and emergency preparedness are not available.
Water resource and climate enthusiasts intrigued by the unique characteristics of Nan Hatty Tank Dam in Texas may find interest in its multiple uses, design features, and risk assessment. With a history dating back to the late 1950s, this dam presents a complex yet intriguing case study for those interested in the intersection of water management, infrastructure, and environmental risk assessment.
Year Completed |
1959 |
Dam Length |
290 |
Dam Height |
20 |
River Or Stream |
TR-GASCONADES CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
228 |
Structural Height |
20 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
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.
Nan Hatty Tank Dam