Cosby Lake Dam Reservoir Report
Nearby: Schwalker Lake Dam Cone Johnson Dam
Last Updated: December 19, 2025
Cosby Lake Dam, located in Tulia, Texas, is a private earth dam that was completed in 1965 for the primary purposes of fire protection, stock, and small fish pond management.
°F
°F
mph
Wind
%
Humidity
Summary
Standing at a height of 20 feet, with a length of 937 feet, the dam has a storage capacity of 137 acre-feet. Despite its relatively small size, the dam plays a crucial role in water resource management for the surrounding area.
With no spillway and a hazard potential classified as "Not Available," Cosby Lake Dam is considered to have a high risk level. While the dam's condition assessment is marked as "Not Rated," its risk management measures and emergency action plan status are not readily available. Despite these uncertainties, the dam's importance for fire protection and local water storage cannot be understated, making it a key feature in the region's water resource and climate resilience efforts.
Located on the TR-Middle Tule Draw river or stream, Cosby Lake Dam serves as a vital resource for the residents of Castro County, Texas. With its unique mix of functions, from fire protection to fish pond management, the dam stands as a testament to the diversity of water resource management strategies in the region. As climate enthusiasts and water resource advocates continue to monitor and assess the dam's risk and condition, its role in supporting the local ecosystem and community remains paramount.
Year Completed |
1965 |
Dam Length |
937 |
Dam Height |
20 |
River Or Stream |
TR-MIDDLE TULE DRAW |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
20 |
Nid Storage |
137 |
Structural Height |
20 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
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.
Cosby Lake Dam