Lake 16 Reservoir Report

Last Updated: December 13, 2025

Lake 16, located in Brule, South Dakota, is a local government-owned reservoir regulated by the South Dakota Department of Environment and Natural Resources.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1935, this earth dam stands at 15 feet high and stretches 620 feet in length, with a storage capacity of 572 acre-feet. The reservoir serves multiple purposes, including water storage, recreation, and wildlife habitat, making it a vital resource for the community.

Despite its low hazard potential, Lake 16 has not been rated for its condition assessment. The reservoir has a maximum discharge of 960 cubic feet per second and a normal storage capacity of 312 acre-feet. While the dam has not been modified in recent years, it is regularly inspected, enforced, and permitted by state authorities to ensure its safety and functionality. With its scenic surroundings and ample storage capacity, Lake 16 is a valuable asset for water resource and climate enthusiasts in the region.

Managed by the St. Paul District of the US Army Corps of Engineers, Lake 16 provides a tranquil setting for outdoor activities and serves as a reliable water source for the local community. While there are no associated structures or locks, the reservoir's primary purpose is to maintain water levels and support ecosystem health. With its strategic location and historical significance, Lake 16 continues to play a crucial role in water management and conservation efforts in South Dakota.

Year Completed

1935

Dam Length

620

Dam Height

15

River Or Stream

TR-MISSONot RatedI

Primary Dam Type

Earth

Hydraulic Height

15

Nid Storage

572

Hazard Potential

Low

Nid Height

15
       
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.