St. Clair County Clerk
- Information about vital records and genealogy research including location, hours, and costs.
- http://www.michigan.gov/hal/0,1607,7-160-17449_18635_20736-56652--,00.html

St. Clair Co. Sheriff Marine Patrol
- Lists facts about operations, duties, personnel, waterways patrolled, current news, links to state and local boating laws, boating and other sites of interest.
- http://www.stclaircounty.org/Offices/marine/