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Rainbow stocking
Lowland lake · Clark County · 3,835.6 acres · 242 ft
826 rainbows on Jul 13
2 months agoMerwin Hatchery
Fish per pound
Trophies · 3.3 lb each
0.30
Nothing new since Jul 13. Holdovers are bigger and warier than fresh stock.
2026 so far
3,379
98% of a normal year
Normal year
3,442
average of 11 seasons
Typical size
Trophies
1.98 lb each
Stocking season
Jun–Jul
when the truck comes
This year against a 11-season average
2026normal
Recent plants
| Date | Species | Number | Fish/lb | Size |
|---|---|---|---|---|
| Jul 13 | Rainbow | 826 | 0.30 | Trophies · 3.3 lb each |
| Jul 13 | Rainbow | 1,732 | 0.70 | Trophies · 1.43 lb each |
| Jul 13 | Rainbow | 821 | 0.30 | Trophies · 3.3 lb each |
| Jul 14 | Rainbow | 1,699 | 0.70 | Trophies · 1.43 lb each |
| Jul 14 | Rainbow | 783 | 0.30 | Trophies · 3.3 lb each |
| Jul 14 | Rainbow | 784 | 0.30 | Trophies · 3.3 lb each |
| Jul 15 | Rainbow | 765 | 0.20 | Trophies · 5 lb each |
| Jul 15 | Rainbow | 942 | 0.70 | Trophies · 1.43 lb each |
47 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 | ||||||||||||
| Kokanee | ||||||||||||
| Northern Pikeminnow |
quiet → best this month
No WDFW calendar for Tiger Muskie — the lake holds it, WDFW just doesn't rate its months.
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 Lake Merwin fished
No catch reports yet for this water.
Currently
59°
Clearfeels like 57°
Tue
Favorable
69° 54°
wind 7 kt · 24% rain
Wed
Favorable
82° 55°
wind 5 kt · 2% rain
Thu
Good
85° 57°
wind 6 kt · 1% rain
Fri
Favorable
75° 51°
wind 4 kt · 0% rain
Sat
Favorable
79° 51°
wind 4 kt · 0% rain
Sun
Favorable
80° 54°
wind 7 kt · 0% rain
Mon
Favorable
73° 50°
wind 9 kt · 4% rain
The current regulation for Lake Merwin 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 Lake Merwin?
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Wind now
5mph
WSW · gusting 5
Gusts · 12h
11mph
laying down
wind mph gusts