Boy Scout Dam Reservoir Report

Last Updated: December 5, 2025

Boy Scout Dam, located in Martindale, Texas, is a private gravity dam completed in 1957 for recreational purposes along the Blanco River.


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Summary

Standing at 11 feet tall and 195 feet long, it has a storage capacity of 123 acre-feet and covers a surface area of 25 acres. The dam is made of stone with a rock foundation and features a single slide gate as the outlet.

Although the dam has not been rated for its condition, it is considered to have a high risk level due to the lack of available hazard potential information. The dam has not been inspected since 1999, and it is not regulated by the state or federal agencies. Despite its age and limited oversight, Boy Scout Dam continues to serve its primary purpose of providing recreational opportunities for visitors in the area. For water resource and climate enthusiasts, this dam presents an intriguing case study in the management and maintenance of older infrastructure in a natural setting.

Year Completed

1957

Dam Length

195

Dam Height

11

River Or Stream

BLANCO RIVER

Primary Dam Type

Gravity

Surface Area

25

Hydraulic Height

11

Nid Storage

123

Structural Height

11

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Not Available

Foundations

Rock

Nid Height

11
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.