Terrapin Creek - Site 31 Reservoir Report

Last Updated: December 5, 2025

Terrapin Creek - Site 31 is a federal flood risk reduction dam located in Cleburne, Alabama.


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Summary

Built in 1972 by the USDA NRCS, this Earth dam stands at a height of 73 feet and spans 461 feet in length. With a storage capacity of 9600 acre-feet and a primary purpose of flood risk reduction, this structure plays a crucial role in mitigating the impact of potential flooding in the area.

The dam features a controlled spillway with a width of 10 feet and vertical lift outlet gates. Despite its high hazard potential and very high risk assessment rating, the condition of Terrapin Creek - Site 31 has not been rated. The last inspection took place in April 2011, with a designated inspection frequency of 1. While emergency action plans and risk management measures are not specified, the presence of this dam signifies a vital asset in protecting the surrounding community from the dangers of flooding.

Managed by the Forest Service and the Natural Resources Conservation Service, Terrapin Creek - Site 31 remains a critical infrastructure in the effort to safeguard the area against potential flood events. Its strategic location and design serve as a testament to the commitment to water resource management and climate resilience in the region. As water resource and climate enthusiasts, the data for Terrapin Creek - Site 31 underscores the importance of proactive measures in safeguarding our communities against the impacts of extreme weather events.

Year Completed

1972

Dam Length

461

Dam Height

73

Primary Dam Type

Earth

Hydraulic Height

59

Nid Storage

9600

Structural Height

73

Outlet Gates

Vertical Lift

Hazard Potential

High

Nid Height

73
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.