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Rock Lake trout stocking

Whitman County, Washington · lake

Rock Lake was last stocked 5 months ago (May 13, 2026). We have 24 stockings on record since May 7, 2025, 14 in the last 12 months (431,679 fish). Most stockings come in May and October. Species stocked: rainbow trout, brown trout.

Last stocked
5 months ago
May 13, 2026
Next planned
Not announced
Last 12 months
14 stockings
431,679 fish
On record
24 stockings
since May 7, 2025

Weather at Rock Lake

  • Tonight
    52°F
    Mostly Cloudy then Rain Showers
    89% rain · wind 0 to 9 mph
  • Friday
    67°F
    Rain Showers
    89% rain · wind 9 to 21 mph
  • Friday Night
    43°F
    Patchy Blowing Dust then Mostly Cloudy
    6% rain · wind 8 to 21 mph
  • Saturday
    65°F
    Mostly Sunny
    wind 1 to 8 mph
  • Saturday Night
    40°F
    Mostly Cloudy
    wind 3 mph
  • Sunday
    69°F
    Partly Sunny
    1% rain · wind 5 mph

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

When is Rock Lake stocked?

Most stockings come in May and October. Stocked 6 times in 2026, mostly in March, usually on Mondays, about every 4 days.

By month, all years

Jan: 0 stockingsJanFeb: 0 stockingsFebMar: 3 stockings3MarApr: 0 stockingsAprMay: 7 stockings7MayJun: 0 stockingsJunJul: 0 stockingsJulAug: 0 stockingsAugSep: 1 stockings1SepOct: 7 stockings7OctNov: 0 stockingsNovDec: 0 stockingsDec
Stockings of Rock Lake by month, all years on record. This month is shown in blue.

Year by year

JanFebMarAprMayJunJulAugSepOctNovDec
202633
2025417

What is stocked

SpeciesStockingsFishFish per stockingTypical size
Rainbow trout19540,87528,467
Brown trout5103,79020,758

Stocking history

DateSpeciesFishPoundsHatchery
May 13, 2026Rainbow trout49,400475Ford Hatchery
May 13, 2026Rainbow trout52,250502Ford Hatchery
May 11, 2026Rainbow trout60,592541Spokane Hatchery
May 7, 2026Rainbow trout64,581673Spokane Hatchery
Mar 9, 2026Rainbow trout10,1262,470Ford Hatchery
Mar 5, 2026Rainbow trout6,1241,490Ford Hatchery
Mar 2, 2026Brown trout15,0003,000Spokane Hatchery
Oct 31, 2025Rainbow trout7,5002,500Lyons Ferry Hatchery
Oct 27, 2025Rainbow trout21,5602,156Spokane Hatchery
Oct 24, 2025Rainbow trout7,6502,550Lyons Ferry Hatchery
Oct 23, 2025Rainbow trout12,1603,800Lyons Ferry Hatchery
Oct 22, 2025Rainbow trout10,8771,088Spokane Hatchery
Oct 22, 2025Rainbow trout9,136914Spokane Hatchery
Oct 3, 2025Rainbow trout15,933873Spokane Hatchery
Oct 1, 2025Brown trout4,430213Spokane Hatchery
Oct 1, 2025Brown trout15,570779Spokane Hatchery
Sep 30, 2025Brown trout26,0781,425Spokane Hatchery
Sep 30, 2025Brown trout42,7122,334Spokane Hatchery
May 30, 2025Rainbow trout40Rock Lake Conservation District
May 28, 2025Rainbow trout35,181342Ford Hatchery
Show 4 older stockings
DateSpeciesFishPoundsHatchery
May 28, 2025Rainbow trout71,519694Ford Hatchery
May 14, 2025Rainbow trout56,280563Spokane Hatchery
May 7, 2025Rainbow trout18,096181Spokane Hatchery
May 7, 2025Rainbow trout31,906319Spokane 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 Rock Lake?

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

DirectionsLarger map

Stocked waters near Rock Lake

All stocked waters in Whitman CountyStocked this week in Washington

Questions about Rock Lake

When was Rock Lake last stocked?
The latest reported stocking was May 13, 2026 (rainbow trout, 49,400 fish), according to Washington agency reports.
How often is Rock Lake stocked?
Stocked 6 times in 2026, mostly in March, usually on Mondays, about every 4 days. Across all years on record, most stockings come in May and October.
What kind of trout are stocked in Rock Lake?
Rainbow trout (19 stockings, 540,875 fish); Brown trout (5 stockings, 103,790 fish).