Graham Lake Dam Reservoir Report
Last Updated: December 5, 2025
Located in La Salle, Texas, the Graham Lake Dam stands as a testament to water resource management and climate resilience.
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Summary
Constructed in 1944, this private-owned Earth dam serves the primary purpose of water supply, with a maximum storage capacity of 143 acre-feet and a normal storage of 73 acre-feet. The dam, standing at a height of 17 feet and stretching 650 feet in length, is situated on the Sauz Creek, under the jurisdiction of the Galveston District.
Despite being a non-federally regulated structure, the Graham Lake Dam plays a crucial role in water management within the region. With a high risk assessment rating of 2, the dam's condition remains unrated, highlighting the need for ongoing monitoring and maintenance to ensure its effectiveness in mitigating potential hazards. While lacking a spillway, the dam features a single outlet gate for controlled water release, emphasizing the importance of strategic infrastructure design in water resource management.
Water resource and climate enthusiasts can appreciate the strategic significance of the Graham Lake Dam in sustaining local water supplies and enhancing climate resilience. As a privately-owned structure, this Earth dam serves as a vital component of the region's water infrastructure, highlighting the essential role of collaboration between public and private entities in ensuring sustainable water management practices. With its high risk assessment and unavailability of hazard potential data, the dam underscores the importance of continuous monitoring and risk management measures to address potential threats and safeguard the community's water resources for the future.
Year Completed |
1944 |
Dam Length |
650 |
Dam Height |
17 |
River Or Stream |
SAUZ CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
17 |
Nid Storage |
143 |
Structural Height |
17 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
San Casimiro Ck Nr Freer
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0cfs |
Nueces Rv At Cotulla
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0cfs |
Nueces Rv Nr Tilden
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0cfs |
Frio Rv At Tilden
|
0cfs |
Frio Rv Nr Derby
|
0cfs |
San Miguel Ck Nr Tilden
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0cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Graham Lake Dam