Green River (Mount Hope Park)

The Hoosic-tributary Green River Berkshire fly fishers mean — town park lot, not the Colrain WMA already in the catalog.

Season

General-law trout streams are in the main season. Bag limits change after Sep 10. MassWildlife is the source of truth. Official rule

License

Massachusetts freshwater license

Park

Town of Williamstown Mount Hope Park dirt lot on Hopper Road, just after the stone bridge over the Green River. MassWildlife Green River WMA also has a grassy pull-off on New Ashford Road.

Walk in

A minute from the Hopper Road lot to the Green and Hopper Brook confluence.

Wading

Pocket water and carved pools. Slippery ledge.

Usual window

Spring through early summer. After a rain it blows out. Confirm MassWildlife / DMF.

Thursday conditions

SW 1 mph around dawn. Fine to go.

Sky

⛅ 82° partly

Sun and moon

Rise 6:11 · 🌕 Full moon · Set 7:38

Wind at dawn

SW 1 mph · Mostly Clear · 51°F

Wind later

• dawn: SW 1 mph
• 10am: SW 2 mph
• 2pm: N 1 mph
• dusk: N 5 mph

Flow

27 cfs · in a wadable band · 1.71 ft · 11:15 pm · Green River at Williamstown · USGS gauge · wadable band is a sketch, not a safety rating

Stocking

Last stocked Apr 16, 2026 · spring water · MassWildlife stocking

A setup that belongs here

4- or 5-wt, nymphs, dries, small streamers.

Notes

Town park plus MassWildlife WMA parcels. Stocked and wild trout. Confirm MassWildlife / DMF.

Do not block the Hopper Road bridge or farm gates.