Town Hall Address E3667 State Hwy M-94 Chatham, MI 49816 United States- Alger County Website https://www.rockrivertownship.org/ Zoning 906-439-5360 E3667 State Hwy M-94 Chatham, MI 49816 United States Town Clerk 906-439-5360 E3667 State Hwy M-94 Chatham, MI 49816 United States Water 906-439-5360 E3667 State Hwy M-94 Chatham, MI 49816 United States Sewer 906-439-5360 E3667 State Hwy M-94 Chatham, MI 49816 United States Tax Collector 906-439-5360 E3667 State Hwy M-94 Chatham, MI 49816 United States Code Enforcement 906-387-2727 Court Street Munising, MI 49862 United States Town Hall Hours Call for hours County Alger