When was Souhegan River last stocked?

The latest reported stocking was May 14, 2026 (brook trout and brown trout, 760 fish), according to New Hampshire agency reports.

How often is Souhegan River stocked?

Stocked 3 times in 2026, mostly in April, usually on Thursdays, about every 28 days. Across all years on record, most stockings come in April.

Is Souhegan River stocked often?

Tied for the most stocked water in Hillsborough County (3 stocking days on record). Stocked more often than 79% of New Hampshire waters on our record. We count each day the agency reported stocking it.

What kind of trout are stocked in Souhegan River?

Brook trout (2 stockings, 700 fish); Brown trout (1 stocking, 360 fish); Rainbow trout (1 stocking, 200 fish).

Souhegan River trout stocking

Merrimack, Hillsborough County, New Hampshire · stream · 164 ft elevation

Souhegan River was last stocked 6 months ago (May 14, 2026). We have 3 stockings on record since Apr 8, 2026, 3 in the last 12 months (1,260 fish). Most stockings come in April. Species stocked: brook trout, brown trout, rainbow trout.

Last stocked

6 months ago

May 14, 2026

Next planned

Not announced

Last 12 months

3 stockings

1,260 fish

On record

3 stockings

since Apr 8, 2026

Tied for the most stocked water in Hillsborough County (3 stocking days on record).
Stocked more often than 79% of New Hampshire waters on our record.

River conditions

USGS gage: SOUHEGAN RIVER AT MERRIMACK, NH (under 1 km away).

Flow: 178 cfs; much higher than usual for the last six weeks
Gage height: 3.02 ft

Streamflow, last six weeks (cfs), daily. Latest: 148 cfs on Nov 8.

Latest reading Nov 9, 2026, 11:30 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Souhegan River

This Afternoon
53°F
Mostly Sunny
wind 5 mph
Tonight
26°F
Mostly Clear
wind 0 to 5 mph
Sunday
60°F
Sunny
wind 0 to 5 mph
Sunday Night
39°F
Clear
wind 0 mph
Monday
70°F
Sunny
wind 0 to 5 mph
Monday Night
42°F
Partly Cloudy
wind 0 mph

Forecast from the National Weather Service for this location, refreshed hourly.

When is Souhegan River stocked?

Most stockings come in April. Stocked 3 times in 2026, mostly in April, usually on Thursdays, about every 28 days.

By month, all years

Stockings of Souhegan River by month, all years on record. This month is shown in blue.

What is stocked

Species	Stockings	Fish	Fish per stocking
Brook trout	2	700	350
Brown trout	1	360	360
Rainbow trout	1	200	200

Stocking history

20263 stockings · 1,260 fish

Date	Species	Fish	Since previous	Hatchery
May 14Latest Thursday	Brook troutBrown trout	760 234 lb	4 weeks	Milford State Fish Hatchery
Apr 16 Thursday	Rainbow trout	200 95 lb	8 days	Milford State Fish Hatchery
Apr 8 Wednesday	Brook trout	300 94 lb		Milford State Fish Hatchery

From New Hampshire fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go. Seasons and limits: New Hampshire fishing regulations.

Where is Souhegan River?

Merrimack, Hillsborough County, New Hampshire. The marker is the agency's location for this water; streams are often stocked at several access points.

Directions Larger map New Hampshire fishing regulations

Stocked waters near Souhegan River

Baboosic Brookstream · 2 mistocked Apr 14, 2026
Baboosic Brookstream · 4 mistocked Apr 14, 2026
Souhegan Riverstream · 5 mistocked May 14, 2026
Tates Pondlake · 6 mistocked Apr 30, 2026
Souhegan Riverstream · 8 mistocked May 14, 2026
Beaver Brookstream · 9 mistocked Apr 27, 2026
Purgatory Brookstream · 9 mistocked May 4, 2026
Beaver Brookstream · 9 mistocked Apr 27, 2026

All stocked waters in Hillsborough County Stocked this week in New Hampshire

Questions about Souhegan River

When was Souhegan River last stocked?: The latest reported stocking was May 14, 2026 (brook trout and brown trout, 760 fish), according to New Hampshire agency reports.
How often is Souhegan River stocked?: Stocked 3 times in 2026, mostly in April, usually on Thursdays, about every 28 days. Across all years on record, most stockings come in April.
Is Souhegan River stocked often?: Tied for the most stocked water in Hillsborough County (3 stocking days on record). Stocked more often than 79% of New Hampshire waters on our record. We count each day the agency reported stocking it.
What kind of trout are stocked in Souhegan River?: Brook trout (2 stockings, 700 fish); Brown trout (1 stocking, 360 fish); Rainbow trout (1 stocking, 200 fish).