Gull Lake Dam Reservoir Report

Last Updated: December 5, 2025

Gull Lake Dam, also known as Yorkville Dam, is a private-owned structure located in Kalamazoo, Michigan.


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Summary

Completed in 1920, this earth-type dam stands at a height of 21 feet and spans 260 feet in length. It serves primarily for recreational purposes, regulating the flow of water from the Gull Lake Outlet. The dam has a low hazard potential and is assessed to be in fair condition as of the last inspection in April 2018.

Managed by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE), Gull Lake Dam is equipped with an uncontrolled spillway with a width of 13 feet. With a maximum storage capacity of 5393 acre-feet and a surface area of 2050 acres, the dam plays a crucial role in water resource management within the region. Despite its moderate risk rating, the dam has not undergone significant modifications over the years and is subject to regular inspections and enforcement to ensure public safety and environmental protection.

For water resource and climate enthusiasts, Gull Lake Dam presents a fascinating case study of a historic structure that continues to play a vital role in the local ecosystem. As part of the Chicago District under the US Army Corps of Engineers, the dam provides valuable insights into the intersection of infrastructure, recreation, and environmental stewardship. With its unique design and purpose, Gull Lake Dam serves as a reminder of the intricate balance between human activities and natural water systems, highlighting the importance of responsible dam management in the face of changing climate conditions.

Year Completed

1920

Dam Length

260

Dam Height

21

River Or Stream

Gull Lake Outlet

Primary Dam Type

Earth

Surface Area

2050

Hydraulic Height

21

Drainage Area

29

Nid Storage

5393

Structural Height

21

Hazard Potential

Low

Nid Height

21
       
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.