Michigan Laws > Chapter 485 Michigan Laws > Chapter 485 – Canal, Harbor, and River Improvement Companies Current as of: 2024 | Check for updates | Other versions Sections Act 233 of 1875 Canal or Harbor Companies 485.1 – 485.25 Act 149 of 1869 River Improvement Companies 485.101 – 485.129 Act 91 of 1887 Improvement of State Boundary Rivers 485.201 – 485.214 Act 188 of 1889 Improvement of Rivers for Logging 485.301 – 485.303 Ask a legal question, get an answer ASAP!Click here to chat with a lawyer about your rights.