Glen Baker Dam Reservoir Report

Last Updated: December 5, 2025

Nestled in the picturesque Lawrence County of South Dakota, the Glen Baker Dam stands as a testament to both the beauty of the region and the importance of water resource management.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1962, this private-owned Earth dam spans 630 feet across the Polo Creek, providing essential water storage of up to 147 acre-feet for the surrounding area. With a maximum discharge capacity of 2984 cubic feet per second, the dam plays a crucial role in regulating water flow and preventing potential flooding events.

Managed by the Natural Resources Conservation Service, the Glen Baker Dam is subject to state regulations and inspections, ensuring its structural integrity and safety. Despite its modest height of 25 feet, the dam is classified as having a low hazard potential. While its current condition is noted as "Not Rated," the dam continues to serve its purpose effectively, safeguarding the local community and environment from water-related risks.

As climate change continues to impact water resources and weather patterns, structures like the Glen Baker Dam become increasingly vital in managing water levels and mitigating potential hazards. With its rich history and ongoing commitment to safety and regulation, the Glen Baker Dam stands as a symbol of responsible water management in the heart of South Dakota's scenic landscape.

Year Completed

1962

Dam Length

630

Dam Height

25

River Or Stream

POLO CREEK

Primary Dam Type

Earth

Hydraulic Height

25

Drainage Area

7

Nid Storage

147

Hazard Potential

Low

Nid Height

25
       
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.