Hamilton Lake Dam No 2 Reservoir Report
Last Updated: December 6, 2025
Hamilton Lake Dam No 2 is a privately owned earth dam located in Dimmit, Texas, built in 1974 for water supply purposes.
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Summary
Standing at a height of 12 feet and with a length of 950 feet, this dam plays a crucial role in managing water resources in the region. The dam has a storage capacity of 100 acre-feet, with a normal storage level of 37 acre-feet, covering a surface area of 11 acres.
Despite not being regulated by the state, Hamilton Lake Dam No 2 is regularly inspected and permitted by the Texas authorities. With no spillway and a hazard potential labeled as 'Not Available', the dam still poses a high risk, emphasizing the importance of proper risk management measures. The dam's condition is currently not rated, but its structural integrity and functionality are essential for maintaining the water supply in the area. While lacking certain details like the original designer and inspection dates, the dam's significance in water resource management cannot be understated.
Year Completed |
1974 |
Dam Length |
950 |
Dam Height |
12 |
River Or Stream |
TR-ROSITA SAN JUAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
12 |
Nid Storage |
100 |
Structural Height |
12 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nueces Rv Nr Asherton
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
Nueces Rv Bl Uvalde
|
1cfs |
Leona Rv Nr Uvalde
|
0cfs |
Frio Rv Nr Derby
|
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.
Green Lake Dam