When was Foss Lake last stocked?

The latest reported stocking was Aug 26, 2026 (rainbow trout, 200 fish), according to Washington agency reports.

How often is Foss Lake stocked?

It was stocked once in the last 12 months.

Is Foss Lake stocked often?

Number 25 of 48 stocked waters in Skagit County by stocking days. Stocked less often than most Washington waters on our record. We count each day the agency reported stocking it.

What kind of trout are stocked in Foss Lake?

Rainbow trout (2 stockings, 500 fish).

How warm is the water near Foss Lake?

The nearest USGS gage read 47°F on Nov 9. Trout are active but slower; fishing picks up as the water warms through the day.

Foss Lake trout stocking

Skagit County, Washington · lake · about 4,640 ft elevation

Foss Lake was last stocked 2 months ago (Aug 26, 2026). We have 2 stockings on record since Aug 29, 2020, 1 in the last 12 months (200 fish). Species stocked: rainbow trout.

Last stocked

2 months ago

Aug 26, 2026

Next planned

Not announced

Last 12 months

1 stocking

200 fish

Water temperature

47°F

Cool for trout

Number 25 of 48 stocked waters in Skagit County by stocking days.
Stocked less often than most Washington waters on our record.

River conditions

Nearest USGS gage: CASCADE RIVER AT MARBLEMOUNT, WA (7 km away, on a different stream or lake).

Water temperature: 47°F
Flow: 552 cfs; much higher than usual for the last six weeks
Gage height: 12.42 ft

Cool for trout. Trout are active but slower; fishing picks up as the water warms through the day.

Water temperature (daily high), last six weeks (°F), daily. Latest: 47 °F on Nov 8. The green band is the ideal range for trout.

Streamflow, last six weeks (cfs), daily. Latest: 430 cfs on Nov 7.

Latest reading Nov 9, 2026, 8:45 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Foss Lake

Today
43°F
Mostly Sunny
wind 1 to 9 mph
Tonight
36°F
Mostly Cloudy
12% rain · wind 6 to 12 mph
Tuesday
43°F
Partly Sunny
wind 1 to 8 mph
Tuesday Night
35°F
Mostly Clear
wind 1 to 6 mph
Wednesday
43°F
Mostly Sunny then Rain And Snow Likely
57% rain · wind 1 to 6 mph
Wednesday Night
36°F
Rain And Snow
91% rain · wind 1 to 7 mph

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

What is stocked

Species	Stockings	Fish	Fish per stocking
Rainbow trout	2	500	250

Stocking history

20261 stocking · 200 fish

Date	Species	Fish	Since previous	Hatchery
Aug 26Latest Wednesday	Rainbow trout	200 1 lb	2188 days	Arlington Hatchery

20201 stocking · 300 fish

Date	Species	Fish	Since previous	Hatchery
Aug 29 Saturday	Rainbow trout	300 2 lb		Arlington Hatchery

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. Seasons and limits: Washington fishing regulations.

Where is Foss Lake?

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

Directions Larger map Washington fishing regulations

Stocked waters near Foss Lake

Granite Lakes (5)lake · 2 mistocked Aug 29, 2024
Granite Lakes (2)lake · 2 mistocked Aug 30, 2024
Basin Lakelake · 4 mistocked Aug 2, 2025
La Rush Lakelake · 4 mistocked Aug 2, 2025
Skaro Lakelake · 6 mistocked Sep 19, 2026
Cyclone Lakelake · 6 mistocked Oct 4, 2025
Bee Lakelake · 6 mistocked Aug 31, 2024
Lake Louiselake · 7 mistocked Aug 10, 2025

All stocked waters in Skagit County Stocked this week in Washington

Questions about Foss Lake

When was Foss Lake last stocked?: The latest reported stocking was Aug 26, 2026 (rainbow trout, 200 fish), according to Washington agency reports.
How often is Foss Lake stocked?: It was stocked once in the last 12 months.
Is Foss Lake stocked often?: Number 25 of 48 stocked waters in Skagit County by stocking days. Stocked less often than most Washington waters on our record. We count each day the agency reported stocking it.
What kind of trout are stocked in Foss Lake?: Rainbow trout (2 stockings, 500 fish).
How warm is the water near Foss Lake?: The nearest USGS gage read 47°F on Nov 9. Trout are active but slower; fishing picks up as the water warms through the day.