Upper Raintree Lake Dam Reservoir Report

Last Updated: December 5, 2025

Upper Raintree Lake Dam, located in Upshur, Texas, is a private-owned structure designed by Ken Groves PE for recreational purposes.


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Summary

Completed in 1970, this Earth-type dam stands at a height of 42 feet and spans 1200 feet in length, with a storage capacity of 720 acre-feet. The dam, situated on the Horn Mill Branch, is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes regular inspections to ensure its integrity.

With a spillway width of 107 feet and uncontrolled outlet gates, the dam has a moderate risk assessment rating. The condition of the dam was assessed as unsatisfactory in April 2021, prompting the need for potential risk management measures to be implemented. Despite its hazard potential not being available, the dam continues to serve as a recreational spot for water resource and climate enthusiasts in the area, offering a surface area of 25 acres for outdoor activities. As the primary source of agency oversight, the dam's safety and maintenance remain a top priority for local authorities.

Year Completed

1970

Dam Length

1200

Dam Height

42

River Or Stream

HORN MILL BRANCH

Primary Dam Type

Earth

Surface Area

25

Hydraulic Height

42

Drainage Area

0.2

Nid Storage

720

Structural Height

42

Outlet Gates

Uncontrolled - 4, Valve - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

42
       
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.