Keith DeZwaan is deputy sheriff and marine division supervisor for the Washtenaw County Sheriff's Department. His division is responsible for safety on county lakes and rivers.
Link: Marine Safety Section
News references
- Keith DeZwaan stories on AnnArbor.com
- Keith DeZwaan stories on Ann Arbor Chronicle
- Keith DeZwaan stories in Heritage Media newspapers
- Keith DeZwaan stories in the Google News archives