Choke Canyon Res Nr Three Rivers Reservoir Report

Last Updated: December 5, 2025

Choke Canyon Reservoir is located in Three Rivers, Texas, and is a popular destination for fishing, boating, camping, and hiking.


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Summary

The reservoir was created in 1982 by damming the Frio River and serves as a water source for the surrounding area. The reservoir has a surface area of over 25,000 acres and a maximum depth of 95 feet. The hydrology of the reservoir is influenced by the Frio River, as well as several smaller creeks and streams. The reservoir also receives water from snowpack providers in the neighboring mountain ranges. Agriculture is an important industry in the region, and the reservoir is used for irrigation purposes. Recreational activities also contribute to the local economy. The reservoir is home to a variety of fish species, including catfish, bass, and crappie.

Reservoir Details

Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change -0.06%
Percent of Normal 91%
Minimum 181.48 ft
2025-12-04
Maximum 220.53 ft
2007-10-04
Average 202 ft
Dam_Height 116
Hydraulic_Height 106
Drainage_Area 5530
Year_Completed 1982
Nid_Storage 1096261
Structural_Height 141
River_Or_Stream FRIO RIVER
Foundations Soil
Surface_Area 25733
Hazard_Potential High
Outlet_Gates Other Controlled - 5, Slide (sluice gate) - 7, Tainter (radial) - 7
Dam_Length 18504
Primary_Dam_Type Earth
Nid_Height 141
       
Seasonal Comparison
Reservoir Storage, Acre-Ft Levels
Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft Levels

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.