Mission Valley Mills Lake Dam Reservoir Report
Last Updated: December 5, 2025
Located in Comal, Texas, Mission Valley Mills Lake Dam stands as a testament to engineering ingenuity since its completion in 1922.
°F
°F
mph
Wind
%
Humidity
Summary
This gravity dam, with a height of 7 feet and a length of 304 feet, serves as a vital structure on the Guadalupe River. Despite its age, the dam remains under state regulation and inspection by the Texas Commission on Environmental Quality (TCEQ), ensuring its continued safe operation.
With a storage capacity of 94 acre-feet, Mission Valley Mills Lake Dam serves a primary purpose beyond flood control or water supply. While lacking a spillway, the dam's design highlights its buttress core type and unlisted/unknown foundation. Although not rated for condition assessment, its risk potential is deemed high, warranting stringent risk management measures. The dam's historical significance and ongoing regulatory oversight make it an intriguing subject for water resource and climate enthusiasts seeking to understand the intersection of infrastructure and environmental stewardship.
While Mission Valley Mills Lake Dam may not have undergone recent inspections or have an established emergency action plan, its presence on the Guadalupe River symbolizes a crucial link between human development and natural resources. As the dam continues to stand the test of time, its risk potential underscores the importance of proactive maintenance and monitoring in safeguarding water resources and surrounding ecosystems. For those fascinated by the intersection of engineering, policy, and environmental stewardship, Mission Valley Mills Lake Dam offers a compelling case study in the ongoing management of our water infrastructure in the face of climate challenges.
Year Completed |
1922 |
Dam Length |
304 |
Dam Height |
7 |
River Or Stream |
GUADALUPE RIVER |
Primary Dam Type |
Gravity |
Hydraulic Height |
7 |
Nid Storage |
94 |
Structural Height |
7 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Mission Valley Mills Lake Dam
Cypress Bend Park
Prince Solom Park
Landa Park
Lifehaus Park
Marion City Park