Washington Fishing Reports ยท Lakes ยท Southwest Region
Lake Merwin on the Lewis River has kokanee, tiger muskie and some trout, close to Portland and Vancouver.
Looking for the latest Lake Merwin fishing report? This page is updated by the AvidMax fly shop team with current conditions, wind, stocking news and the flies working now at Lake Merwin.
Water level
Wind forecast
Lake Merwin fishing report
Updated November 7, 2026.
Fall fish are spread out.
Streamers near the river arms.
Stocking report
See the WDFW catchable trout plant reports for the latest stocking at Lake Merwin and other Washington waters.
Load your fly box
Before you head to Lake Merwin, bring: Woolly Bugger #4-8, Sparkle Minnow #4-6, Balanced Leech #10-12, Balanced Bou Leech #10-12, Slump Buster #6-8, Egg #12-14, Scud Bomb #12-16, Clouser Minnow #2-6, Pitching Leech #10, Circus Peanut #4.
Flies working right now
The flies above that we have in stock right now.
Lake Merwin lake details
| Access | Ramps and parks along State Route 503. |
|---|---|
| Elevation | About 240 ft |
| Nearest town | Woodland, Washington |
| Best season | Spring through fall |
| Fish | Kokanee, tiger muskie and trout |
| Regulations | Check the Washington Department of Fish and Wildlife regulations and emergency rule changes before you go. A Washington fishing license is required for anglers 15 and older, plus a catch record card for steelhead and salmon. |
| Leaders and tippet | 9 ft leaders, 3X tippet |
| Ice fishing | Does not freeze. |
| Camping | PacifiCorp parks on the Lewis River lakes |
| Kids | Yes. |
| Good to know | Busy with boats in summer. |
Fishing by season
Winter
Cold.
Spring
Kokanee.
Summer
Summer.
Fall
Fall.
How to get there
From Woodland, take State Route 503 east to Lake Merwin.