When was Alta Lake last stocked?

The latest reported stocking was May 19, 2026 (kokanee, 12,630 fish), according to Washington agency reports.

How often is Alta Lake stocked?

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

What kind of trout are stocked in Alta Lake?

Kokanee (5 stockings, 49,602 fish); Rainbow trout (3 stockings, 61,000 fish).

How warm is the water near Alta Lake?

The nearest USGS gage read 59°F on Sep 25. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Alta Lake trout stocking

Okanogan County, Washington · lake

Alta Lake was last stocked 4 months ago (May 19, 2026). We have 8 stockings on record since Apr 3, 2025, 2 in the last 12 months (54,600 fish). Most stockings come in April to May. Species stocked: kokanee, rainbow trout.

Last stocked

4 months ago

May 19, 2026

Next planned

Not announced

Last 12 months

2 stockings

54,600 fish

Water temperature

59°F

Ideal for trout

River conditions

Nearest USGS gage: METHOW RIVER NEAR MOUTH NEAR PATEROS, WA (4 km away, on a different stream or lake).

Water temperature: 59°F

Ideal for trout. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Water temperature (daily high), last six weeks (°F), daily. Latest: 62 °F on Sep 23. The green band is the ideal range for trout.

Latest reading Sep 25, 2026, 2:30 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Alta Lake

Tonight
55°F
Rain Showers
93% rain · wind 0 to 3 mph
Friday
65°F
Showers And Thunderstorms
93% rain · wind 3 to 17 mph
Friday Night
45°F
Partly Cloudy
9% rain · wind 2 to 16 mph
Saturday
64°F
Mostly Sunny
wind 5 mph
Saturday Night
45°F
Mostly Cloudy
wind 0 to 3 mph
Sunday
65°F
Mostly Sunny
wind 0 to 3 mph

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

When is Alta Lake stocked?

Most stockings come in April to May.

By month, all years

Stockings of Alta Lake 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				1	1
2025				1	1

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Kokanee	5	49,602	9,920
Rainbow trout	3	61,000	20,333

Stocking history

Date	Species	Fish	Pounds	Hatchery
May 19, 2026	Kokanee	12,630	26	Omak Hatchery
May 19, 2026	Kokanee	11,970	25	Omak Hatchery
Apr 14, 2026	Rainbow trout	30,000	390	Chelan Hatchery
May 5, 2025	Kokanee	11,396	38	Omak Hatchery
May 5, 2025	Kokanee	11,406	38	Omak Hatchery
May 5, 2025	Kokanee	2,200	7	Omak Hatchery
May 5, 2025	Rainbow trout	30,000	492	Chelan Hatchery
Apr 3, 2025	Rainbow trout	1,000	826	Wells 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.

Where is Alta Lake?

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

Directions Larger map

Stocked waters near Alta Lake

Mitchell Creekstream · 9 mistocked Aug 11, 2026
Antilon Lake - Northlake · 11 mistocked Sep 14, 2026
Antilon Lake - Southlake · 11 mistocked Sep 15, 2026
Gold Creekstream · 11 mistocked Aug 3, 2026
Wapato Lakelake · 13 mistocked Jun 2, 2026
Roses Lakelake · 13 mistocked Sep 15, 2026
Chelan Riverstream · 14 mistocked Aug 21, 2025
First Creekstream · 18 mistocked Aug 3, 2026

All stocked waters in Okanogan County Stocked this week in Washington

Questions about Alta Lake

When was Alta Lake last stocked?: The latest reported stocking was May 19, 2026 (kokanee, 12,630 fish), according to Washington agency reports.
How often is Alta Lake stocked?: It was stocked 2 times in the last 12 months. Across all years on record, most stockings come in April to May.
What kind of trout are stocked in Alta Lake?: Kokanee (5 stockings, 49,602 fish); Rainbow trout (3 stockings, 61,000 fish).
How warm is the water near Alta Lake?: The nearest USGS gage read 59°F on Sep 25. Prime range for trout (about 50 to 65°F): fish are feeding actively.