Bishop Lake Dam Reservoir Report
Last Updated: December 5, 2025
Bishop Lake Dam, located in Guadalupe, Texas, was completed in 1964 and is primarily used for irrigation purposes.
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Summary
The dam, standing at a height of 11 feet and a length of 1240 feet, holds a maximum storage capacity of 85 acre-feet, with a normal storage level of 50 acre-feet. The dam is an earth dam type with a buttress core, situated on the TR-Guadalupe River.
Although the dam is not regulated by the state and has not been rated for condition assessment, it poses a high risk level according to available data. With no spillway and only one outlet gate, the dam's hazard potential is not available, emphasizing the need for further inspection and risk management measures. Despite these challenges, Bishop Lake Dam remains an important part of the local water resource infrastructure, showcasing the ongoing need for sustainable management practices in the face of climate variability and increasing water demands.
Year Completed |
1964 |
Dam Length |
1240 |
Dam Height |
11 |
River Or Stream |
TR-GUADALUPE RIVER |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
11 |
Nid Storage |
85 |
Structural Height |
11 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Guadalupe Rv At Fm 1117 Nr Seguin
|
108cfs |
Guadalupe Rv At Cr 143 Nr Gonzales
|
125cfs |
San Marcos Rv At Luling
|
103cfs |
Plum Ck Nr Luling
|
9cfs |
Guadalupe Rv At Gonzales
|
214cfs |
San Marcos Rv Nr Martindale
|
89cfs |
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.
Bishop Lake Dam