Summary

It was created in 1968 as a result of the construction of the Rockwall-Forney Dam across the East Fork of the Trinity River. The lake covers an area of 22,745 acres and has a maximum depth of 40 feet. The primary sources of water for Lake Ray Hubbard are the East Fork of the Trinity River and Rowlett Creek. The lake is used for a variety of recreational activities, including fishing, boating, and swimming. The lake also provides water for irrigation and agricultural purposes in the surrounding areas. In addition, the lake serves as a major source of drinking water for the cities of Dallas and Garland. The lake is managed by the Sabine River Authority of Texas.

Regional Streamflow Levels

E Fk Trinity Rv Blw Lk Ray Hubbard Nr Forney 31.2cfs	31cfs
E Fk Trinity Rv Nr Forney 6120.0cfs	6120cfs
Squabble Ck At Shores Blvd Nr Rockwall 3.68cfs	4cfs
E Fk Trinity Rv Nr Crandall 212.0cfs	212cfs
Prairie Ck At Us Hwy 175 0.91cfs	1cfs
Rowlett Ck Nr Sachse 57.7cfs	58cfs

15-Day Long Term Forecast

Reservoir Details

Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change	-0.01%
Percent of Normal	100%
Minimum	424.92 ft 2014-12-14
Maximum	437.08 ft 2015-05-31
Average	435 ft

Seasonal Comparison

Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft Levels

5-Day Hourly Forecast Detail

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.