Joe Pool Lk Nr Duncanville Reservoir Report

Last Updated: December 5, 2025

Joe Pool Lake is a reservoir located near Duncanville, Texas.


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Summary

The lake was created by the Army Corps of Engineers in 1985 as a flood control measure on the Trinity River. The lake covers 7,740 acres and has a maximum depth of 75 feet. The hydrology of the lake is fed by the mountain snowpack from the Rocky Mountains and surface flow from the surrounding area. The Trinity River is the primary source of surface flow. The lake is used for recreational purposes such as boating, fishing, and camping. Additionally, the lake supports agricultural irrigation in the surrounding area. The lake is also a popular spot for birdwatching and wildlife viewing. Overall, Joe Pool Lake serves as a valuable resource for residents and visitors to the Duncanville, Texas area.

Reservoir Details

Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change -0.01%
Percent of Normal 100%
Minimum 518.47 ft
2011-10-08
Maximum 538.0 ft
2015-05-31
Average 521 ft
Dam_Height 108
Hydraulic_Height 103
Drainage_Area 232
Year_Completed 1986
Nid_Storage 642500
Structural_Height 108
River_Or_Stream MOUNTAIN CREEK
Foundations Rock, Soil
Surface_Area 7470
Hazard_Potential High
Outlet_Gates Uncontrolled - 0
Dam_Length 22180
Primary_Dam_Type Earth
Nid_Height 108
       
Seasonal Comparison
Wind Speed, Mph Levels
Wind Direction, Degrees Clockwise From North Levels
Precipitation, Total, In Levels
Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft Levels
Status Of Equipment Alarm, Units In Data Descriptor 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.