Grass Lake is a 70 acre lake located in Rock County. It has a maximum depth of 3 feet.
** About Boating Ordinances: Before boating on an unfamiliar Wisconsin waterways check for a sign at the public boat landing to determine if there are local regulations (more restrictive than state law) which may apply on that waterbody. Also be sure to review the document Wisconsin Boating Regulations at https://dnr.wi.gov/files/pdf/pubs/le/le0301.pdf to learn about statewide regulations. There may be a delay between the time an ordinance is passed and the time it gets into our database. Therefore, the only way to know for sure if a water body has an ordinance in effect is to look for a sign posted at a public boat landing.
Wisconsin Department of Natural Resources | 101 S. Webster Street . PO Box 7921 | Madison, Wisconsin 53707-7921Call 1-888-936-7463 (TTY Access via relay - 711) from 7 a.m. - 10 p.m.
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