Mass Audubon Society published a book called Inland Fishes of Massachusetts*, which included some tiny (but accurately rendered) distribution maps for hundreds of fishes in the Commonwealth, including trout.

What does it mean if a stream is marked?  That at some time in history, a fish survey found a wild trout among the species sampled (typically through "electroshock", which temporarily stuns fish within a small radius, and brings them to the surface).  It doesn't mean that the fishing is "good".  If the area has received significant development, it's even  possible that the stream no longer supports wild trout.  But it's a reasonable indication of where to explore.

We created these interactive maps by scanning the tiny printed, distribution maps from the book.  We enlarged them 10x, and painstakingly compared them to survey maps.  While it's possible we made errors here and there (who doesn't?), we believe we've accurately assigned the distribution symbols in the book to specific streams within 4 basins: Hudson, Deerfield, Connecticut, and Housatonic.

View MA Wild Trout in the Hudson Drainage in a larger map

Note you can zoom in on any stream.  If you're seriously studying the streams, you'll probably want to click the link below the map to open it using the full browser window.  Also, note you can download a kmz file with these same markers to use in Google Earth.

PLEASE NOTE: A NUMBER OF WILD TROUT STREAMS IN THE CONNECTICUT BASIN ARE BEING STOCKED WITH ATLANTIC SALMON FINGERLINGS.  SALMON PARR RESEMBLE BROWN TROUT.  WE HOPE YOU'RE PRACTICING CATCH AND RELEASE ANYWAY, BUT BY LAW YOU MUST RELEASE ALL SALMON PARR.  LEARN THE DIFFERENCE HERE.

*Inland Fishes of Massachusetts by Hartwell, Halliwell, and Launer, published by the Massachusetts Audubon Society.