When was Lake Armstrong last stocked?

The latest reported stocking was Apr 22, 2026 (rainbow trout, 2,700 fish), according to Washington agency reports.

How often is Lake Armstrong stocked?

It was stocked 2 times in the last 12 months. Across all years on record, most stockings come in April.

What kind of trout are stocked in Lake Armstrong?

Rainbow trout (2 stockings, 5,700 fish); Cutthroat trout (2 stockings, 81 fish).

Lake Armstrong trout stocking

Snohomish County, Washington · lake

Lake Armstrong was last stocked 5 months ago (Apr 22, 2026). We have 4 stockings on record since Apr 4, 2025, 2 in the last 12 months (2,762 fish). Most stockings come in April. Species stocked: rainbow trout, cutthroat trout.

Last stocked

5 months ago

Apr 22, 2026

Next planned

Not announced

Last 12 months

2 stockings

2,762 fish

On record

4 stockings

since Apr 4, 2025

River conditions

Nearest USGS gage: NF STILLAGUAMISH RIVER NEAR ARLINGTON, WA (7 km away, on a different stream or lake).

Flow: 168 cfs; about normal for the last six weeks
Gage height: 1.36 ft

Streamflow, last six weeks (cfs), daily. Latest: 168 cfs on Sep 23.

Latest reading Sep 25, 2026, 2:15 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Lake Armstrong

Tonight
50°F
Light Rain
94% rain · wind 3 mph
Friday
63°F
Showers And Thunderstorms
98% rain · wind 3 to 8 mph
Friday Night
43°F
Light Rain Likely
61% rain · wind 3 to 7 mph
Saturday
64°F
Partly Sunny
2% rain · wind 0 to 5 mph
Saturday Night
41°F
Partly Cloudy
1% rain · wind 1 to 5 mph
Sunday
65°F
Mostly Sunny
1% rain · wind 0 to 5 mph

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

When is Lake Armstrong stocked?

Most stockings come in April.

By month, all years

Stockings of Lake Armstrong by month, all years on record. This month is shown in blue.

Year by year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2026				2
2025				2

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Rainbow trout	2	5,700	2,850
Cutthroat trout	2	81	41

Stocking history

Date	Species	Fish	Pounds	Hatchery
Apr 22, 2026	Rainbow trout	2,700	1,500	Arlington Hatchery
Apr 3, 2026	Cutthroat trout	62	0	Post Ms (Arlington)
Apr 14, 2025	Rainbow trout	3,000	1,250	Whitehorse Pond
Apr 4, 2025	Cutthroat trout	19	0	Post Ms (Arlington)

From Washington 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.

Where is Lake Armstrong?

Snohomish County, Washington. Approximate: the marker is the USGS place-name point for this water, not an agency location.

Directions Larger map

Stocked waters near Lake Armstrong

Lake Mcmurraylake · 8 mistocked Apr 22, 2026
Riley Lakelake · 8 mistocked Apr 22, 2026
Lake Kilake · 8 mistocked Apr 23, 2026
Lake Cavanaughlake · 8 mistocked Sep 9, 2026
Lake Lomalake · 9 mistocked Apr 29, 2026
Crabapple Lakelake · 9 mistocked May 20, 2026
Lake Goodwinlake · 10 mistocked Sep 16, 2026
Lake Shoecraftlake · 11 mistocked Mar 24, 2026

All stocked waters in Snohomish County Stocked this week in Washington

Questions about Lake Armstrong

When was Lake Armstrong last stocked?: The latest reported stocking was Apr 22, 2026 (rainbow trout, 2,700 fish), according to Washington agency reports.
How often is Lake Armstrong stocked?: It was stocked 2 times in the last 12 months. Across all years on record, most stockings come in April.
What kind of trout are stocked in Lake Armstrong?: Rainbow trout (2 stockings, 5,700 fish); Cutthroat trout (2 stockings, 81 fish).