Johnson Gss Reservoir Report
Last Updated: December 6, 2025
Johnson Gss is a privately owned earth dam located in Liberty, Texas, along the TR-Hale Branch.
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Summary
Built in 1978 by the USDA NRCS, this recreational dam stands at 25 feet in height and spans 310 feet in length, with a storage capacity of 56 acre-feet. Despite its high hazard potential rating, the dam's condition remains unrated, highlighting the need for ongoing risk assessment and management measures.
While the dam lacks a spillway and features only one outlet gate, it serves as a popular spot for recreational activities in the area. Although not regulated by the state, Johnson Gss does undergo regular inspections and is permitted for operation. With its close proximity to the Fort Worth District of the USACE, the dam plays a crucial role in water resource management and flood control efforts in the region. As climate change continues to impact water resources, the importance of maintaining and monitoring structures like Johnson Gss becomes increasingly evident.
Year Completed |
1978 |
Dam Length |
310 |
Dam Height |
25 |
River Or Stream |
TR-HALE BRANCH |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
56 |
Structural Height |
25 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Upper Keechi Ck Nr Oakwood
|
20cfs |
Trinity Rv Nr Crockett
|
2670cfs |
Navasota Rv Nr Easterly
|
22cfs |
Big Ck Nr Freestone
|
4cfs |
Trinity Rv Nr Oakwood
|
2660cfs |
Navasota Rv At Old Spanish Rd Nr Bryan
|
50cfs |
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.
Johnson Gss