Michigan is famous as a trout fishing “mecca” as well as being the state in which Trout Unlimited started. Michigan DNR lists roughly 20,000 miles of “trout water”, of which many contain wild, self-sustaining trout populations. The image below illustrates some of the data available here for free download as KML or KMZ files suitable for use in Google Earth, Google Maps, the National Map, and many other mapping software and services.
Source: TU CSI (basin data), MI DNR (stream data), Google Earth
The colored basins show the habitat quality for Brook Trout as measured by the TU Conservation Succes index.
Stream data is from the 2000 Trout Stream Atlas published by the MI DNR. These were the last data that provided information about stream class. Class 1 streams (which are mostly small, WTS) are shown in cyan. Class II streams are shown in magenta, and support larger fish. Other III to VII are coded as well (see download pages for detailed information).