74 Ranch Dam No 1 Reservoir Report
Last Updated: December 5, 2025
74 Ranch Dam No 1, located in Atascosa, Texas, was completed in 1965 and serves as a vital water supply structure in the area.
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Summary
This privately owned earth dam, with a height of 12 feet and a length of 1275 feet, is designed primarily for water storage on TR-La Parita Creek. With a maximum storage capacity of 154 acre-feet and a normal storage capacity of 84 acre-feet, the dam plays a crucial role in managing water resources for the region.
Despite its importance for water supply, 74 Ranch Dam No 1 is not regulated by the state and has not been rated for condition assessment. The dam lacks a spillway and associated locks, presenting a potential hazard in the event of heavy rainfall or flooding. The risk assessment for the dam indicates a high risk level, emphasizing the need for proper management and maintenance measures to ensure the safety and functionality of this structure.
Although the dam lacks certain safety features and has not been fully assessed for its condition, its role in water supply for the region underscores the importance of proper management and maintenance. As climate change impacts water resources, ensuring the safety and effectiveness of dams like 74 Ranch Dam No 1 becomes increasingly crucial for sustainable water management in Texas.
Year Completed |
1965 |
Dam Length |
1275 |
Dam Height |
12 |
River Or Stream |
TR-LA PARITA CREEK |
Primary Dam Type |
Earth |
Surface Area |
21 |
Hydraulic Height |
12 |
Nid Storage |
154 |
Structural Height |
12 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
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.
74 Ranch Dam No 1