The Merrimack river is running hard, The Nashua river not so bad. especially if you put in off of the Broad st ramp. The big orange safety balls and line are not across the river at the dam area yet so be careful at that end. The river is tough fishing, there is a lot of water there, very big area but a lot if it is just like the bottom of a clean bowl. smooth and dull with no structure.
Round pond is completely ice free in Nashua as is Sandy pond. water is still wicked cold , keep your life jacket on. both have a lot of area you can fish from shore , both are easily accessible with a canoe or kayak. fish slow slow slow, and when you think you are fishing slow enough, slow down just a bit more. try some of everything and dont be afraid to give them a nice 8 inch worm meal or lobster sized rage craw. slow lightweight swim baits , really slow sinking jerkbaits , twitch ultra slow and let them sit. fish the bright sunlight areas and maybe youll find some sunning and warming. i really like white this time of yr. the new floating rattle trap in some of the less than 5 ft deep areas where the sun is bright on the water. as always just out of the water flow areas , inlets, outlets , points. probably no green growing yet but if you see some growing green ..... that means oxygen and sunlight. Nashua river behind Clocktower place, the side area of the building where the water is a few degrees warmer (need a boat/canoe.kayak to get there) as well as the buildings on both sides at the Main st bridge. Again you need a boat/canoe/kayak. there is some decent structure in the water just past and under the Main st bridge. (smallmouth not largemouth)
also concerning the Bow power plant area............,
I think there is a way to find out if they are pulling water . may be just a simple as a phone call. Shane ? anyone else? know.