Quien Sabe Lake No 2 Dam Reservoir Report

Last Updated: December 5, 2025

Quien Sabe Lake No 2 Dam in Texas, completed in 1962, serves as a critical water supply resource in the region.


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Summary

This privately owned Earth dam stands at a height of 7 feet, with a storage capacity of 70 acre-feet and a normal storage level of 20 acre-feet. The dam, located on TR-ONEAL CREEK in Gonzales County, Texas, plays a key role in providing water for various purposes, primarily for water supply.

Despite being a privately owned structure, Quien Sabe Lake No 2 Dam is regulated by the state of Texas, with regular inspections to ensure its safety and functionality. The dam lacks a spillway and locks, but is equipped with one outlet gate. With a high risk assessment rating, it is crucial for proper risk management measures to be in place to mitigate any potential hazards. Although the condition of the dam is currently not rated, its importance in water resource management cannot be understated for both the local community and the ecosystem it supports.

Water and climate enthusiasts will find Quien Sabe Lake No 2 Dam to be a fascinating example of human intervention in water management. With its strategic location and design features, this dam serves as a testament to the ongoing efforts to sustainably harness and utilize water resources in a changing climate landscape.

Year Completed

1962

Dam Length

895

Dam Height

7

River Or Stream

TR-ONEAL CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

7

Nid Storage

70

Structural Height

7

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

7
       
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.