San Geronimo Creek Recharge Dam Reservoir Report

Last Updated: December 5, 2025

San Geronimo Creek Recharge Dam, located in Riomedina, Texas, serves as a vital structure for water resource management in the area.


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Summary

Built in 1979, this gravity dam stands at a height of 22 feet and spans 420 feet across the San Geronimo Creek. With a storage capacity of 307 acre-feet and a normal storage level of 200 acre-feet, the dam plays a crucial role in groundwater recharge and flood control in the region.

Managed by the local government and regulated by the Texas Commission on Environmental Quality, the San Geronimo Creek Recharge Dam undergoes regular inspections to ensure its structural integrity. With a satisfactory condition assessment as of April 2021, the dam is equipped with controlled and uncontrolled outlet gates to manage water flow effectively. Its location within the Galveston District further highlights its importance in the overall water infrastructure of the area.

The dam's proximity to the San Geronimo Creek, with a drainage area of 55.2 square miles, underscores its significance in maintaining water quality and availability for surrounding communities. As a gravity dam with buttress core types, it not only contributes to groundwater recharge but also provides essential benefits for wildlife habitat and ecosystem preservation. Overall, the San Geronimo Creek Recharge Dam stands as a testament to sustainable water resource management practices in Texas.

Years Modified

2008 - Other

Year Completed

1979

Dam Length

420

Dam Height

22

River Or Stream

SAN GERONIMO CREEK

Primary Dam Type

Gravity

Surface Area

25

Hydraulic Height

22

Drainage Area

55.2

Nid Storage

307

Structural Height

22

Outlet Gates

Other Controlled - 1, Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

22
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.