FunWithTreasure, when you say "Couch Brook" I'm assuming you mean the one that Google Maps calls Couch Brook. (I say this because I've heard different names for the two streams along Couch Brook and Keets Brook roads. Somehow there's a Shattuck Brook mixed in there).
There used to be a nice quiet place along Couch Brook that was not posted where some of us would peacefully pan or maybe run a small sluice. Then sometime this year someone came in there with a dredge and, as one of our fellow posters said, it now "looks like someone blew the place up." It made me sad.
As Kevin mentions, the rest of the Brook is posted.
I've researched the area a lot and I'm a dredge owner but I haven't found anywhere in western Mass where I could operate my dredge without seeking private landowner permission. There is one Wildlife Management Area called "Satan's Kingdom" that sits east of Bernardston, and I guess theoretically you could possibly dredge on that public land. As far as I know Mass. has not created any laws against dredging...yet. My worry is that if people illegally dredge or annoy landowners Mass. very well might create a law about dredging.
I've personally never checked out the streams that appear to flow through that WMA on Google Earth. If you do check that out please let me know (post on here or PM).
With my dredge I've chosen to drive the extra 2 hours up to New Hampshire this year. The gold is better up there too.
- Brian