Johnson Ranch Dam No 2 Reservoir Report
Last Updated: December 5, 2025
Johnson Ranch Dam No 2, located in Gray County, Texas, was completed in 1966 with a primary purpose of providing fire protection, stock, and small fish pond support.
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Summary
This private earth dam, designed by the USDA NRCS, stands at a height of 21 feet and has a total length of 473 feet. Despite being a non-federal structure, it is subject to state permitting and inspection requirements to ensure its safety and functionality.
This dam, situated on TR-McClellan Creek, has a storage capacity of 123 acre-feet and serves a drainage area of 540 acres. While it does not have a spillway, it is equipped with one outlet gate. Although its hazard potential is not rated and its condition assessment is not available, it is identified as having a high risk level (2), emphasizing the importance of continued monitoring and maintenance to mitigate any potential risks associated with its operation.
With its critical role in water resource management and the potential impact on the surrounding environment, Johnson Ranch Dam No 2 serves as a vital infrastructure for the local community. As water resource and climate enthusiasts, understanding the design, purpose, and risk factors of such structures is crucial in promoting sustainable water management practices and ensuring the safety and resilience of our water infrastructure systems.
Year Completed |
1966 |
Dam Length |
473 |
Dam Height |
21 |
River Or Stream |
TR-MCCLELLAN CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Drainage Area |
540 |
Nid Storage |
123 |
Structural Height |
22 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
22 |
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.
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Lake McClellan Campground
Johnson Ranch Dam No 2