Harris Dam Reservoir Report
Nearby: Hargus Dam Koa Lake Dam
Last Updated: December 6, 2025
Harris Dam, located in La Salle, Texas along the Nueces River, was completed in 1912 for the primary purpose of irrigation.
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Summary
This private-owned buttress-type dam stands at a height of 8 feet and has a length of 600 feet, with a storage capacity of 200 acre-feet. Despite its age, the dam has not been rated for condition assessment, and its hazard potential is not available.
With no spillway and limited information on its structure, Harris Dam poses a high risk, although it has not been officially assigned a risk assessment date. The dam has not been inspected since December 1971, raising concerns about its current condition and safety measures in place. While the dam has not been modified in recent years and lacks certain regulatory oversight, it remains a vital resource for irrigation and recreation in the area.
Water resource and climate enthusiasts interested in Harris Dam will find its historical significance and functional purpose intriguing. As a key infrastructure for irrigation along the Nueces River, the dam's operational status and potential risks warrant further attention and monitoring. With its unique design and limited information available, Harris Dam presents an opportunity for research and exploration into the intersection of water resource management and infrastructure resilience in Texas.
Year Completed |
1912 |
Dam Length |
600 |
Dam Height |
8 |
River Or Stream |
NUECES RIVER |
Primary Dam Type |
Buttress |
Hydraulic Height |
8 |
Nid Storage |
200 |
Structural Height |
8 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nueces Rv At Cotulla
|
0cfs |
Nueces Rv Nr Asherton
|
0cfs |
Frio Rv Nr Derby
|
0cfs |
San Casimiro Ck Nr Freer
|
0cfs |
Frio Rv At Tilden
|
0cfs |
Nueces Rv Nr Tilden
|
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.
Harris Dam