GRAND RAPIDS, Mich. (WOOD) — The Michigan Department of National Resources is beginning the process of removing the swim buoys from state park beaches.

The swim buoys identify where the water is less than 5 feet with lower risks of dangerous currents and waves. The DNR inspects the areas about every two weeks, making adjustments as needed. Once the buoys are removed for the season, the DNR said the area will no longer be considered a swim area. However, the beach will remain open.

“Swim buoys and beach flag warning systems start to be removed after Labor Day weekend due to changing weather patterns in September,” Pat Whalen, Plainwell District supervisor for the DNR Parks and Recreation Division, said in a press release. “High winds, waves and unpredictable water temperatures can make it difficult for staff to perform the necessary inspections and remove the buoys within the usual 14-day time frame.”

The DNR said on-shore rescue equipment, the flag system on the Great Lakes and safety signage will remain on the shoreline through at least Oct. 1.