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Mason County

Mason Lake

WDFW logged 6 trout stocking dates at Mason Lake in 2026 so far, 222,677 fish in all. The latest was on Aug 3, 2026. WDFW lists it as “Mason Lk (Maso)”.

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

A lake with forest and trees
Photo: 12019, Pixabay License, Pixabay

Mason Lake in numbers

fish stocked in 2026, through Nov 6
222,677
by the same date in 2025
238,820
in all of 2025
241,845
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, Aug 3, 202624,025Rainbow trout, fry
2026 · 222,677 fish on 6 dates
DateSpeciesFishLife stageFish per lb
Aug 3Rainbow trout16,295 fish · Fry16,295Fry60.8
Aug 3Rainbow trout7,730 fish · Fry7,730Fry67.8
Jul 28Rainbow trout15,615 fish · Fry15,615Fry67
Jul 28Rainbow trout8,735 fish · Fry8,735Fry71
Jul 28Rainbow trout6,445 fish · Fry6,445Fry69
Jul 27Rainbow trout20,095 fish · Fry20,095Fry51
Jul 27Rainbow trout18,675 fish · Fry18,675Fry58
Jul 27Rainbow trout8,120 fish · Fry8,120Fry70
Jun 8Rainbow trout31,677 fish · Fry31,677Fry536
Apr 7Rainbow trout56,100 fish · Fry56,100Fry470
Apr 1Rainbow trout33,190 fish · Fry33,190Fry541
2025 · 241,845 fish on 10 dates
DateSpeciesFishLife stageFish per lb
Nov 10Rainbow trout2,825 fish · Fry2,825Fry14.6
Nov 10Rainbow trout200 fish · Fry200Fry32.7
Oct 15Rainbow trout9,500 fish · Fry9,500Fry16.3
Oct 14Rainbow trout4,616 fish · Fry4,616Fry15.81
Oct 14Rainbow trout1,147 fish · Fry1,147Fry11.95
Oct 13Rainbow trout6,705 fish · Fry6,705Fry13.6
Aug 19Rainbow trout39,735 fish · Fry39,735Fry38
Aug 18Rainbow trout47,120 fish · Fry47,120Fry39.3
Aug 18Rainbow trout43,540 fish · Fry43,540Fry39.3
Aug 14Rainbow trout3,710 fish · Fry3,710Fry128
Jun 3Rainbow trout29,460 fish · Fry29,460Fry869
May 12Kokanee49,610 fish · Fry49,610Fry280
Jan 7Rainbow trout1,994 fish · Fry1,994Fry16.62
Jan 7Rainbow trout1,683 fish · Fry1,683Fry16.82
Every year since 2020
YearStocking datesFish
20266222,677
202510241,845
202410280,342
202310311,588
20227133,656
202112406,411
202014338,019
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. 338k2020: 338,019 fish
  2. 406k2021: 406,411 fish
  3. 134k2022: 133,656 fish
  4. 312k2023: 311,588 fish
  5. 280k2024: 280,342 fish
  6. 242k2025: 241,845 fish
  7. 223k2026: 222,677 fish

What is stocked here

All records since 2020
SpeciesFishShare
Rainbow trout1,779,10392%
Kokanee141,7757%
Cutthroat trout13,6601%

Open on a map

Map point 47.3350, -122.9575: the USGS Geographic Names Information System point for this lake (feature 1506501). It marks the water, not a parking lot or a boat launch.

Closest waters on this site

Straight-line distance between USGS map points, not driving distance.

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

Near Mason Lake

Boat access, bait shops, rentals and places to stay within 10 miles. Distances are straight lines from the map point of the water, not driving distance.

Bait and tackle

1 listed
  • Larry's Used Tackle Shopoutdoor store · Union4.0 mi

Boats, kayaks and marinas

nearest 3

Campgrounds and RV parks

nearest 3

Lodging

nearest 3
Compare stays nearbyPartner link (Stay22: Booking.com, Expedia, Vrbo and others). We may earn a commission if you book; the price is the same.

Businesses: Overture Maps Foundation open places data (release 2026-10-21.0, pulled 2026-11-06), from the businesses’ public listings. We have not visited them and do not rank them. Hours and services change, so call ahead.