San Miguel Electric Cooperative Levee 9b Reservoir Report
Nearby: 74 Ranch Dam No 1 Sediment Pond 7
Last Updated: December 5, 2025
San Miguel Electric Cooperative Levee 9b, located in Atascosa, Texas, serves as a crucial barrier along the TR-LA PARITA CREEK.
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Summary
This private earth dam, designed with a buttress core, stands at a height of 16 feet and has a storage capacity of 448 acre-feet. With a surface area of 52 acres and a drainage area of 2.81 square miles, this levee plays a vital role in flood control and water resource management in the region.
Though the dam lacks a spillway, it is equipped with one outlet gate for water release. While its hazard potential is labeled as "Not Available," the risk assessment indicates a high level of risk (2). Despite being non-Federal and not regulated by the state, this structure undergoes regular inspections and permitting processes to ensure its structural integrity and functionality. As a key component in the local water infrastructure, San Miguel Electric Cooperative Levee 9b highlights the importance of private entities in managing water resources and adapting to climate challenges.
With its strategic location and significant storage capacity, San Miguel Electric Cooperative Levee 9b stands as a critical asset in the Galveston District. While its condition assessment is labeled as "Not Rated," the dam's design and purpose make it a key player in maintaining water security and mitigating flood risks in the region. As climate change continues to impact water resources, structures like Levee 9b play a pivotal role in safeguarding communities and ecosystems against the threats of extreme weather events and rising water levels.
Dam Height |
16 |
River Or Stream |
TR-LA PARITA CREEK |
Primary Dam Type |
Earth |
Surface Area |
52 |
Drainage Area |
2.81 |
Nid Storage |
448 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Atascosa Rv At Whitsett
|
0cfs |
Atascosa Rv Nr Mccoy
|
1cfs |
San Miguel Ck Nr Tilden
|
0cfs |
Choke Canyon Res Owc Nr Three Rivers
|
33cfs |
Frio Rv At Tilden
|
0cfs |
Nueces Rv Nr Three Rivers
|
29cfs |
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.
San Miguel Electric Cooperative Levee 9b