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Lake Wingra aquatic plants

Submerged aquatic plants, often dismissed as “weeds,” are essential to the freshwater ecosystems of lakes and rivers. Known scientifically as macrophytes, aquatic plants absorb nutrients like phosphorus and nitrogen which otherwise can fuel algal blooms. They also stabilize lake-bottom sediments, help protect shorelines from wave erosion, and provide critical habitat and food for fish and other wildlife. Because aquatic plants play such a vital role, the Wisconsin Department of Natural Resources (DNR) regulates and limits their removal to preserve the numerous benefits they bring to our waterways.

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2025 nearshore training

LakeForecast water quality monitoring in 2025

Clean Lakes Alliance’s LakeForecast water quality monitoring program completed its 13th season in 2025. This program is entirely volunteer implemented, with more than 100 trained monitors assessing water quality conditions from nearshore and offshore locations across all five Yahara lakes (Mendota, Monona, Wingra, Waubesa, and Kegonsa).

From Memorial Day through Labor Day, volunteers recorded water clarity, air and water temperature, waterfowl presence, the extent of floating plant debris, and the severity of green algae and cyanobacteria at public beaches, lakeside parks, and private piers. Submitted condition reports were able to be tracked in real-time on Lakeforecast.org or our free app, allowing the general public to stay up to date on current lake conditions.

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frozen-sunset-on-lake-mendota

Lakes can be surprisingly noisy in winter. Ice fractures and cracks are constantly forming through these cold winter months, causing audible sounds ranging from a slight echoing “blooop” sound to a startling or explosive “bang!” Why exactly are our icy lakes so loud?

Ice isn’t always as solid as it looks

Although lake ice appears stable and solid, it is an ever-shifting material subject to ever-changing forces. Unlike nearly every other substance or material, the volume of water significantly expands as it freezes, increasing the given volume of water about 9% after freezing. The expansion can induce incredible amounts of pressure onto the ice. Think about how frozen water can cause metal pipes to bend and burst.

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LakeForecast water quality monitoring in 2024

Clean Lakes Alliance’s LakeForecast water quality monitoring program completed its 12th season in 2024. This program is entirely volunteer-implemented, with over 100 trained monitors assessing water quality conditions from nearshore and offshore locations across all five Yahara lakes (Mendota, Monona, Wingra, Waubesa, and Kegonsa). From Memorial Day through Labor Day, volunteers recorded water clarity, air and water temperature, waterfowl presence, the extent of floating plant debris, and the severity of green algae and cyanobacteria at public beaches, lakeside parks, and private piers. Submitted data can be seen in real-time on Lakeforecast.org or our free app, allowing the public to stay up to date on current lake conditions.

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Image 3 - Offshore monitor training

LakeForecast water quality monitoring in 2023

Clean Lakes Alliance’s LakeForecast water quality monitoring program completed its 11th season in 2023. This program is entirely volunteer implemented, with 90 trained monitors assessing water quality conditions from nearshore and offshore locations across all five Yahara lakes (Mendota, Monona, Wingra, Waubesa, and Kegonsa). From Memorial Day through Labor Day, volunteers recorded water clarity, air and water temperature, waterfowl presence, extent of floating plant debris, and the severity of green algae and cyanobacteria at public beaches, lakeside parks, and private piers. Submitted data can be seen in real-time on lakeforecast.org or our free app allowing the general public to stay up to date on current lake conditions.

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Photo courtesy Dane County Land & Water Resources Department
Lake Wingra and Henry Vilas Park
Lake Wingra and Henry Vilas Park

Henry Vilas Park (Lake Wingra)

Henry Vilas Park is one of Madison’s oldest lakeside parks, and provides a gathering place along Lake Wingra for swimming, fishing, and even ice skating when the lagoon freezes over. The park was created from a 1904 donation from Wisconsin’s U.S. Senator, William Freeman Vilas (1840-1908), to the Madison Park and Pleasure Drive Association, an organization committed to the development of parks and scenic drives in the Madison area in the late 19th and early 20th centuries. Vilas also served as U.S. Postmaster General and Secretary of the Department of the Interior under President Grover Cleveland. Henry Vilas Park is named in memory of William’s son who died in childhood.

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2022 Clean Boats, Clean Waters
Download a pdf of the 2022 Clean Boats, Clean Waters Season Report

Overview

In 2022, Clean Lakes Alliance received a Wisconsin DNR Surface Water Grant to participate in the Clean Boats, Clean Waters (CBCW) program. CBCW is a state-wide aquatic invasive species (AIS) prevention program. The program increases awareness and education to boaters, anglers, and general lake users on best practices to prevent the further spread of AIS at our local boat landings. 

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Nine days of Frozen Assets

We had so much fun throughout the nine days of Frozen Assets 2023 and we hope you did too! More than 8,000 lake enthusiasts from near and far joined us for science demonstrations, musical performances, ice skating, food and drinks, ice sculpture carving, a chance to try new winter activities, face painting, networking, a chance to run or walk in the only 5K on a frozen lake in North America, and more! We THANK YOU for supporting lakes Mendota, Monona, Wingra, Waubesa, and Kegonsa!

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Lake enthusiasts from near and far joined us at Frozen Assets 2023 for science demonstrations, music, a 5K on a frozen lake, and more!

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May2022 Training with FOLKS

LakeForecast water quality monitoring in 2022

 In 2022, our volunteers embarked on the 10th season of LakeForecast water quality monitoring. This work involved collecting nearshore condition reports at piers, beaches, parks, and access points around the five Yahara lakes. From May through September, volunteers measured water clarity, recorded air and water temperature, identified the presence of green algae and cyanobacteria, and noted additional visual observations. Reports are entered into the LakeForecast app where all data are updated in real time.

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Water quality monitoring equipment

LakeForecast water quality monitoring in 2021

In 2021, our volunteers embarked on the 9th season of LakeForecast water quality monitoring. This work involved collecting nearshore condition reports at piers, beaches, parks, and access points around the five Yahara lakes. From May through September, volunteers took water quality measurements. They measured water clarity, recorded air and water temperature, identified the presence of green algae and cyanobacteria, and noted additional visual observations. Reports are entered into the LakeForecast app where all data are updated in real time.

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