Franklin County · reservoir · 118 acres
Lake Mattawa
Stocked 6× on record · MassWildlife
Lake Mattawa is a reservoir in Franklin County, Massachusetts, stocked with Brook Trout, Brown Trout, Rainbow Trout and Tiger Trout — most recently on May 26, 2026. FishableWaters aggregates every stocking record for this water from MassWildlife; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Drizzle
74°
64°
11 mph
38%
Fri
Overcast
79°
60°
5 mph
16%
Sat
Drizzle
83°
63°
10 mph
1%
↗ pressure risingPost-front rising pressure can slow things down for a day.
Stocking ledger
| — 2026 — | ||||
| May 26 | Brown Trout | — | ||
| May 18 | Brook Trout | — | ||
| Apr 16 | Brown Trout | — | ||
| Apr 13 | Tiger Trout | — | ||
| Apr 13 | Brown Trout | — | ||
| Apr 8 | Rainbow Trout | — | ||
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
All Massachusetts waters with brook trout → · All Massachusetts waters with brown trout →
Nearby waters
- Millers River Reservoir1.8 mi
- Woods Ice Pond1.7 mi
- Orcutt Brook2.4 mistocked Apr 21, 2026
- Mill Brook2.4 mi
- Moss Brook2.9 mi
- Whetstone Brook2.8 mi
- Lake Rohunta2.5 mi
- Osgood Brook3.0 mi
Seasons, limits, and rules are the state's call — check the official MA regulations and buy your license before you go. We link the source; we never restate the rules.
Lake Mattawa fishing — FAQ
What fish are stocked in Lake Mattawa?+
Lake Mattawa is stocked with Brook Trout, Brown Trout, Rainbow Trout and Tiger Trout in Franklin County, Massachusetts, most recently on May 26, 2026 by MassWildlife. The full stocking ledger is on this page.
When does Lake Mattawa get stocked?+
Going by 6 records since 2026, stocking at Lake Mattawa peaks in April. Check this page for the season's scheduled and most recent stockings.
Do I need a license to fish Lake Mattawa?+
Yes — Massachusetts requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is Lake Mattawa?+
Lake Mattawa is a reservoir in Franklin County, Massachusetts. Driving directions and an interactive topo map are on this page.
Data: MassWildlife · updated May 26, 2026 · checked daily · we publish what agencies publish, nothing else.