Old Second Lift Dam Reservoir Report

Last Updated: December 5, 2025

The Old Second Lift Dam, located in Sugar Land, Texas, along the Oyster Creek, was completed in 1948 for the primary purpose of irrigation.


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Summary

The dam, standing at a height of 12 feet and a length of 200 feet, holds a maximum storage capacity of 2000 acre-feet, with a normal storage of 1000 acre-feet. The dam is owned by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), ensuring state permitting, inspection, and enforcement practices are in place.

With a high risk assessment rating of 2, the Old Second Lift Dam poses potential hazards that are currently not rated and assessed. The dam is primarily made of earth and stone materials, with a spillway type listed as "None." The dam features seven outlet gates, including six controlled and one uncontrolled gate, for water management. Despite the lack of recent data on the condition assessment and emergency action plan, the dam remains an important water resource structure in Fort Bend County, Texas, serving irrigation, water supply, and other purposes for the local community.

Year Completed

1948

Dam Length

200

Dam Height

12

River Or Stream

OYSTER CREEK

Primary Dam Type

Earth

Hydraulic Height

12

Nid Storage

2000

Structural Height

12

Outlet Gates

Other Controlled - 6, Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

12
       
Seasonal Comparison

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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.