Boykin Lake Dam No 1 Reservoir Report

Last Updated: December 5, 2025

Boykin Lake Dam No 1, located in Hillister, Texas, is a privately owned structure completed in 1943 for the primary purpose of irrigation.


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Summary

This earth dam, with a height of 19 feet and a length of 700 feet, holds a storage capacity of 220 acre-feet. Situated on the TR-Magnus Branch river, the dam plays a crucial role in providing water resources for agricultural activities in the area.

Despite being a privately owned dam, Boykin Lake Dam No 1 falls under state jurisdiction with permitting and inspection requirements. The dam has a high risk assessment rating due to its age and condition, with no available hazard potential assessment. The last inspection was conducted in 2009, and the structure has not been rated for its current condition. With no spillway and limited discharge capacity, the dam poses potential challenges in managing water flow during extreme weather events.

Water resource and climate enthusiasts interested in the infrastructure of Boykin Lake Dam No 1 will find its historical significance and role in supporting irrigation activities in the region intriguing. The dam's unique design, location on the TR-Magnus Branch, and its high-risk assessment status make it a noteworthy structure for further study and monitoring in the realm of water resource management and climate resilience.

Year Completed

1943

Dam Length

700

Dam Height

19

River Or Stream

TR-MAGNUS BRANCH

Primary Dam Type

Earth

Surface Area

20

Hydraulic Height

19

Nid Storage

220

Structural Height

22

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

22
       
Seasonal Comparison

Weather Forecast

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.