Harvey Lake Dam Reservoir Report
Nearby: Ernst Lake Dam Semmes Pond Dam
Last Updated: December 5, 2025
Harvey Lake Dam, located in Smiley, Texas, is a private structure built in 1966 by the USDA NRCS with a primary purpose of serving as a Fish and Wildlife Pond.
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Summary
This earth dam stands at a height of 21 feet and has a length of 1488 feet, holding a maximum storage capacity of 117 acre-feet. Although it does not have a spillway, the dam is equipped with one outlet gate.
With a drainage area of 60 square miles, Harvey Lake Dam plays a crucial role in fire protection, stock, recreation, and supporting fish and wildlife habitats in the region. Despite its high hazard potential and condition assessment being not rated, the dam has not been inspected recently. As water resource and climate enthusiasts, understanding the significance of structures like Harvey Lake Dam in managing water resources and supporting ecosystems is essential for sustainable development and conservation efforts in the area.
Year Completed |
1966 |
Dam Length |
1488 |
Dam Height |
21 |
River Or Stream |
SANDIES CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Drainage Area |
60 |
Nid Storage |
117 |
Structural Height |
22 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Guadalupe Rv At Cr 143 Nr Gonzales
|
125cfs |
Guadalupe Rv At Fm 1117 Nr Seguin
|
108cfs |
Guadalupe Rv At Gonzales
|
214cfs |
Sandies Ck Nr Westhoff
|
0cfs |
Cibolo Ck At Sutherland Springs
|
20cfs |
San Marcos Rv At Luling
|
103cfs |
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.
Harvey Lake Dam