Squannacook River - Groton
Fishing, stocking, and current conditions
Stocked April to October in 2026, heaviest in May: rainbow trout, brook trout, and brown trout, 4 plants in all. A USGS gauge reports from this water, so the conditions card on this page is live.
Massachusetts · see it on the national map
The year here
stocked last 7 days announced ahead · tap a tick for details
What swims here
Rainbow trout
Brown trout
Brook trout
Stocking record 2026
Agency feed checked today.
| Date | Species | Size | Fish | Status |
|---|---|---|---|---|
| Apr 9 | Rainbow trout | completed | ||
| May 8 | Brown trout | completed | ||
| May 8 | Brook trout | completed | ||
| Oct 8 | Rainbow trout | completed |
When to fish Squannacook River - Groton
| Major periods (~2 h) | Minor periods (~1 h) | |
|---|---|---|
| Today | 9:23-11:23 am and 9:45-11:45 pm | 3:38-4:38 am and 3:55-4:55 pm |
| Tomorrow | 10:09 am-12:09 pm and 10:32 pm-12:32 am | 4:49-5:49 am and 4:17-5:17 pm |
Moon: waxing gibbous, 92% lit. These are solunar periods, the traditional feeding-time theory: majors around the moon's transit overhead and underfoot, minors around moonrise and moonset. Theory, not a measurement. Times are Eastern Time (EDT).
What the record actually says
- Stocked 15 days ago (Oct 8)
- Flow 127% of the seasonal median
Computed this evening, Oct 23 · Massachusetts fishing forecast
Gear for this water
Stocked within the last three weeks: fish are still bunched near the release points and keyed on familiar smells.
For the trout (rainbow trout stocked 2 times here in 2026, moving water)
| Small jerkbaits | floating minnows in the 2 to 3 inch class for the deeper bends |
| Waders or wet-wading boots | stocked stream fish stack in the obvious pools; getting to the next one is the edge |
| Light spinning rod | 5 to 6.5 ft light or ultralight; short rods cast under branches |
Suggestions follow from what the state actually stocks here and what kind of water it is, nothing else. No sponsored placements.
Nearby stocked waters
The closest waters with stocking pages of their own, straight-line miles from this one.
| Water | Distance | Most recent |
|---|---|---|
| Mulpus Brook - Shirley | 0.5 mi | Apr 24 |
| Catacoonamug Brook - Shirley | 3.1 mi | Apr 24 |
| Knops Pond - Groton | 4.4 mi | Oct 9 |
| Baddacook Pond - Groton | 4.8 mi | Oct 9 |
| Cow Pond Brook - Groton | 6.6 mi | Apr 24 |
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