Quien Sabe Lake No 1 Dam Reservoir Report

Last Updated: December 5, 2025

Located in Gonzales, Texas, Quien Sabe Lake No 1 Dam stands as a vital structure for water supply in the region.


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Summary

Built in 1962, this earth dam stands at 16 feet high and spans 1900 feet in length, with a storage capacity of 576 acre-feet. The dam is situated on TR-ONEAL CREEK and is regulated by the Texas Commission on Environmental Quality (TCEQ), ensuring proper permitting, inspection, and enforcement measures are in place.

Despite its age, Quien Sabe Lake No 1 Dam is deemed to have a high risk potential, indicating the need for ongoing monitoring and management. The dam lacks a spillway and is identified as having a hazard potential that is currently not available. While the dam's condition is not rated, it serves as a critical infrastructure for water resource management in the area. With a primary purpose of water supply, the dam plays a crucial role in meeting the region's water needs.

Operated by a private entity, Quien Sabe Lake No 1 Dam serves as a reminder of the importance of maintaining and regulating our water resources. With a risk assessment of 2 (high), it is essential to ensure that the dam's safety and functionality are continuously monitored to prevent any potential hazards. As water resource and climate enthusiasts, understanding and advocating for the proper management of structures like Quien Sabe Lake No 1 Dam is crucial in safeguarding our water supply for future generations.

Year Completed

1962

Dam Length

1900

Dam Height

16

River Or Stream

TR-ONEAL CREEK

Primary Dam Type

Earth

Surface Area

55

Hydraulic Height

16

Nid Storage

576

Structural Height

16

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

16
       
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.