Richland Creek Ws Scs Site 121 Dam Reservoir Report

Last Updated: December 5, 2025

Richland Creek WS SCS Site 121 Dam, located in Navarro County, Texas, is a local government-owned structure designed by USDA NRCS to reduce flood risk along TR-Post Oak Creek.


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Summary

Completed in 1963, this earth dam stands at a height of 22 feet and spans a length of 2906 feet, providing a storage capacity of 924 acre-feet. Despite its age, the dam is in good condition and is regularly inspected, regulated, and enforced by the Texas Commission on Environmental Quality (TCEQ).

With a primary purpose of flood risk reduction, Richland Creek WS SCS Site 121 Dam plays a crucial role in protecting the surrounding area from potential inundation. The dam, constructed as a buttress-type earth dam, has a normal storage capacity of 49 acre-feet and covers a surface area of 17 acres. While it does not have a spillway, the dam is equipped with one outlet gate to control water levels in the reservoir.

Although the dam has a high risk assessment rating of 2, its hazard potential is not available, and its emergency action plan status is unknown. Despite these uncertainties, the dam continues to serve its intended purpose effectively, showcasing the importance of proper infrastructure for managing water resources and mitigating the impacts of extreme weather events in the region.

Year Completed

1963

Dam Length

2906

Dam Height

22

River Or Stream

TR-POST OAK CREEK

Primary Dam Type

Earth

Surface Area

17

Hydraulic Height

22

Drainage Area

1.58

Nid Storage

924

Structural Height

22

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

22
       
Seasonal Comparison

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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.