Mccasland Lake No 3 Dam Reservoir Report
Last Updated: December 6, 2025
Mccasland Lake No 3 Dam, located in Mills County, Texas, is a privately owned structure built in 1971 by the USDA NRCS.
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Summary
This earth dam, standing at a height of 25 feet with a length of 496 feet, serves primarily for irrigation purposes but also supports fire protection, stock, small fish ponds, and recreational activities. The dam holds a storage capacity of 110 acre-feet, with a normal storage level of 81 acre-feet, covering a surface area of 21 acres. Despite its critical role in water resource management, the dam does not have a spillway, posing a high risk of potential hazards.
Situated on Merrell Creek, a tributary of the Brazos River, Mccasland Lake No 3 Dam is under the jurisdiction of the Fort Worth District of the US Army Corps of Engineers. While the dam is not regulated by the state, it undergoes regular inspections and permitting processes to ensure its structural integrity and safety. The dam is equipped with a single outlet gate, with no locks or spillways, emphasizing the need for continued monitoring and risk management measures to prevent any potential emergencies or incidents. With a risk assessment rating of "High (2)," stakeholders and authorities must stay vigilant in maintaining the dam's condition and preparedness for any unforeseen events.
In the realm of water resource and climate enthusiasts, Mccasland Lake No 3 Dam stands as a focal point for understanding the intersection of human infrastructure with natural ecosystems. Its presence as a vital irrigation source underscores the delicate balance between water management for agricultural needs and the preservation of local habitats. As climate change impacts water availability and usage patterns, the sustainability of dams like Mccasland Lake No 3 becomes increasingly crucial. By delving into the dam's design, purpose, and risk factors, enthusiasts can gain valuable insights into the challenges and opportunities in managing water resources in a changing climate landscape.
Year Completed |
1971 |
Dam Length |
496 |
Dam Height |
25 |
River Or Stream |
MERRELL CREEK |
Primary Dam Type |
Earth |
Surface Area |
21 |
Hydraulic Height |
25 |
Nid Storage |
110 |
Structural Height |
25 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pecan Bayou Nr Mullin
|
2cfs |
Leon Rv Nr Hamilton
|
4cfs |
Colorado Rv Nr San Saba
|
211cfs |
Leon Rv Nr Hasse
|
2cfs |
San Saba Rv At San Saba
|
140cfs |
N Bosque Rv At Hico
|
6cfs |
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.
Mccasland Lake No 3 Dam