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Rainbow stocking
High lake · King County · 32.1 acres · 4,184 ft
820 rainbows on Aug 9
1 month agoTokul Creek Hatchery
Fish per pound
Fry · under 1 oz each
473
Planted small, to grow on — these are not catchable yet.
2026 so far
820
101% of a normal year
Normal year
813
average of 3 seasons
Typical size
Fry
under 1 oz each
Stocking season
Aug
when the truck comes
This year against a 3-season average
2026normal
Recent plants
| Date | Species | Number | Fish/lb | Size |
|---|---|---|---|---|
| Aug 9 | Rainbow | 820 | 473 | Fry · under 1 oz each |
| Sep 7 | Rainbow | 820 | 280 | Fry · under 1 oz each |
| Aug 15 | Rainbow | 820 | 332 | Fry · under 1 oz each |
| Jun 29 | Rainbow | 800 | 866 | Fry · under 1 oz each |
4 rainbow releases on record since 2015 · from WDFW's fish plants data, as published.
This lake on WDFWWDFW fishing prospects calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainbow Trout |
quiet → best this month
WDFW rates rainbow trout best in April through June.
WDFW draws one calendar per species for the whole state, so it shows the season's shape rather than this lake's own record. Check the rules for when each species is open here. This lake on WDFW
be the first to say how Mason Lake (King County) fished
No catch reports yet for this water.
Currently
45°
Clearfeels like 41°
Tue
Favorable
49° 42°
wind 5 kt · 21% rain
Wed
Favorable
61° 45°
wind 5 kt · 1% rain
Thu
Favorable
65° 46°
wind 5 kt · 0% rain
Fri
Favorable
62° 41°
wind 5 kt · 0% rain
Sat
Favorable
64° 40°
wind 5 kt · 0% rain
Sun
Favorable
66° 44°
wind 6 kt · 0% rain
Mon
Favorable
56° 38°
wind 8 kt · 10% rain
The current regulation for Mason Lake (King County) could not be confidently verified from a structured source, so this dashboard won't guess. Check the official WDFW sport fishing rules before fishing.
rules are shown exactly as published and cover every species at this location — they can change at any time, so always confirm with WDFW before fishingWant to know the best time to fish for rainbow trout this week at Mason Lake (King County)?
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Wind now
4mph
NW · gusting 4
Gusts · 12h
14mph
laying down
wind mph gusts