Nasworthy Dam Reservoir Report

Last Updated: December 5, 2025

Nasworthy Dam, located on the South Concho River in San Angelo, Texas, is a vital water resource infrastructure managed by the local government.


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Summary

The dam, designed by Floyd & Lochridge and completed in 1930, serves multiple purposes including recreation and water supply. With a height of 47 feet and a length of 5480 feet, Nasworthy Dam has a storage capacity of 32,981 acre-feet and covers a surface area of 1380 acres.

The dam's primary purpose of recreation attracts water resource and climate enthusiasts who can enjoy various activities in and around the reservoir. Nasworthy Dam is regulated and inspected by the Texas Commission on Environmental Quality (TCEQ) to ensure its safety and functionality. The dam has a satisfactory condition assessment and is regularly monitored for any potential hazards. With its picturesque location and significant storage capacity, Nasworthy Dam plays a crucial role in the water management of the region.

Overall, Nasworthy Dam stands as a testament to effective infrastructure management and sustainable water resource utilization in Texas. Its strategic location on the South Concho River, combined with its multiple purposes, makes it a key attraction for enthusiasts interested in water resources and climate. The dam's design, history, and regulatory oversight contribute to its importance in ensuring water supply and recreational opportunities for the local community and visitors alike.

Year Completed

1930

Dam Length

5480

Dam Height

47

River Or Stream

SOUTH CONCHO RIVER

Primary Dam Type

Earth

Surface Area

1380

Hydraulic Height

47

Drainage Area

2881

Nid Storage

32981

Structural Height

47

Outlet Gates

Other Controlled - 1, Uncontrolled - 2, Valve - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

47
       
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.