Grimes Lake Dam Reservoir Report
Nearby: Kilgore Lake Dam Lazy Jp Ranch Dam
Last Updated: March 9, 2026
Grimes Lake Dam, located in Wilson, Texas, was completed in 1961 and stands at a height of 15 feet with a length of 700 feet.
Summary
This private earth dam on Sulphur Creek serves multiple purposes and has a storage capacity of 154 acre-feet. While the dam is not state-regulated, it is subject to state inspections and permitting.
Despite being classified as having a high risk potential, the condition assessment of Grimes Lake Dam is currently not rated. With a buttress core type and no spillway, the dam has one outlet gate and is not associated with any other structures. Although there is limited information available on the dam's maintenance and emergency preparedness, its strategic location and significance in managing water resources in the area make it a key feature for water resource and climate enthusiasts to monitor and study.
°F
°F
mph
Wind
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Humidity
15-Day Weather Outlook
Year Completed |
1961 |
Dam Length |
700 |
Dam Height |
15 |
River Or Stream |
SULPHUR CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
154 |
Structural Height |
15 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
Atascosa Rv Nr Mccoy
|
1cfs |
San Antonio Rv Nr Falls City
|
223cfs |
San Antonio Rv Nr Floresville
|
585cfs |
Cibolo Ck Nr Falls City
|
627cfs |
San Antonio Rv Nr Elmendorf
|
798cfs |
San Antonio Rv Nr Victor Braunig Lk Nr Elmendorftx
|
242cfs |
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.
Grimes Lake Dam