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Mason County

Osborne Lakes

WDFW logged 2 trout stocking dates at Osborne Lakes in 2026 so far, 610 fish in all. The latest was on Oct 5, 2026. WDFW lists it as “Osborne Lks (Maso)”.

WDFW data pulled . Latest record in the WDFW data for any water: Nov 4, 2026.

A lake with mountains and fog
Photo: Walkerssk, Pixabay License, Pixabay

Osborne Lakes in numbers

fish stocked in 2026, through Nov 6
610
by the same date in 2025
680
in all of 2025
680
Stocking log

Every stocking record

Every trout and kokanee release WDFW lists for this water in the last two years, newest first, then yearly totals since 2020. Counts include fry and fingerlings as well as catchable trout: WDFW calls catchable fish “legals”. Fish per pound is WDFW’s figure for each release; fewer fish per pound means bigger fish.

Last stocked, Oct 5, 2026450Rainbow trout, fry; Cutthroat trout, fingerling
2026 · 610 fish on 2 dates
DateSpeciesFishLife stageFish per lb
Oct 5Rainbow trout250 fish · Fry250Fry11.3
Oct 5Cutthroat trout200 fish · Fingerling200Fingerling25
Apr 9Rainbow trout160 fish · Legals160Legals2.5
2025 · 680 fish on 3 dates
DateSpeciesFishLife stageFish per lb
Oct 15Rainbow trout280 fish · Fry280Fry16.3
Sep 17Cutthroat trout200 fish · Fingerling200Fingerling27.2
Apr 2Rainbow trout200 fish · Legals200Legals2.16
Every year since 2020
YearStocking datesFish
20262610
20253680
20242640
20233640
20222680
20212700
20202480
2020 – 2026

Trout stocked each year

2026 is outlined because the year is not over. The tallest full year is yellow. Counts include fry and fingerlings.

  1. 4802020: 480 fish
  2. 7002021: 700 fish
  3. 6802022: 680 fish
  4. 6402023: 640 fish
  5. 6402024: 640 fish
  6. 6802025: 680 fish
  7. 6102026: 610 fish

What is stocked here

All records since 2020
SpeciesFishShare
Rainbow trout3,19472%
Cutthroat trout1,23628%

Where it is

Washington trout stockingAll Mason County watersRecently stocked in Washington

No single map point is given for this water in the USGS names database, so no map is shown.

Also in Mason County: Mason Lake, Spencer Lake, Lost Lake, Nahwatzel Lake, Trails End Lake, Cady Lake, Aldrich Lake, Devereaux Lake.

Source: WDFW Fish Plants dataset, data.wa.gov, Washington Department of Fish and Wildlife. Pulled . Check the agency and the current fishing rules before you go.