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Notice 12-26-2025 : Wishing you all a wonderful, healthy and prosperous New Year. From all of us at the City of Osseo!

Lowering Lake Martha

Beginning September 3rd, 2024, Lake Martha will be lowered to allow the Wisconsin Department of Natural Resources to perform the required 10-year inspection on the dam. During this time, the Public Works Department will be replacing the stop logs below the waterline and performing minor maintenance. The plan is to have the lake back at winter stage prior to November 1st.