Harrison Lake No 5 Dam Reservoir Report
Last Updated: December 6, 2025
Harrison Lake No 5 Dam, located in Dimmit, Texas, was completed in 1974 and serves multiple purposes, including fire protection, stock, and small fish pond maintenance, as well as water supply.
°F
°F
mph
Wind
%
Humidity
Summary
The earth dam stands at a height of 8 feet and spans a length of 1150 feet, with a storage capacity of 58 acre-feet. Despite its modest size, the dam plays a crucial role in the region's water resource management and ecosystem support.
Managed by a private owner, the dam is not regulated by the state and is not currently rated for its condition assessment. The lack of spillway type and limited outlet gates indicate potential challenges in managing water flow during extreme events. With a high risk assessment rating of 2, there is a need for increased monitoring and risk management measures to ensure the dam's structural integrity and the safety of the surrounding community.
For water resource and climate enthusiasts, the Harrison Lake No 5 Dam represents a unique intersection of human intervention and natural ecosystems. Its role in providing essential resources while facing potential risks underscores the importance of proactive maintenance and monitoring in ensuring sustainable water management practices. As discussions around climate change and water scarcity intensify, the dam serves as a tangible example of the complexities and responsibilities involved in balancing human needs with environmental preservation.
Year Completed |
1974 |
Dam Length |
1150 |
Dam Height |
8 |
River Or Stream |
TR-SAN ROQUE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
8 |
Nid Storage |
58 |
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 Nr Asherton
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
Frio Rv Nr Derby
|
0cfs |
San Casimiro Ck Nr Freer
|
0cfs |
Zacate Ck At Laredo
|
0cfs |
Rio Grande At Laredo
|
1760cfs |
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.
Harrison Lake No 5 Dam