Please do not dispose of leaf litter and lawn waste in the lake. These actions are considered a civil infraction and can be punishable with fines between $800 and $5,000 by the State of Michigan Department of the Environment, Great Lakes, and Energy (EGLE).

This page provides several clickable links to technical reports that offer additional information about Spring Lake and its watershed.

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Water Quality Monitoring and Plant Control

• 2025 Plant Control Report

• 2025 Water Quality Report

• 2024 Plant Control Report

• 2024 Water Quality Report

• 2023 Plant Control Report

• 2022 Water Quality Report with Management Recommendations

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Lake and Watershed Management

• 2025 Project Update - Watershed Management Plan

• ​2018 Spring Lake External Loading and Toxic Algae Study

• 2015 Report on the Impact of Stormwater Runoff on Spring Lake

• 2010 Rein in the Runoff - Citizens Stormwater Guidelines for Spring Lake

• 2001 Watershed Management Plan

• 2000 Lake Improvement Plan

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Alum Treatment

• 2025 Project Update - Post Alum Treatment

• 2022 Spring Lake Sediment Analysis and Internal Loading Report

• 2021 Overview of Lake Alum Treatments

• 2018 Evaluation of Internal Phosphorus Loading in Spring Lake 11 Years After Alum Treatment

• 2017 Technical Article on the Use of Alum in Lakes (Wagner 2017)

• 2010 Spring Lake Alum Treatment Report

• 2004 North American Lake Management Society Position Paper on the Use of Alum