Merrill Lake Fishing Regulations
Cowlitz County, Washington · 2026 size limits, bag limits, and seasons
Merrill Lake is a lake in Cowlitz County, Washington. It has its own fishing regulations. These rules replace Washington's statewide limits on this water.
Map of Merrill Lake
Merrill Lake limits by species (2026)
| Species | Size limit | Daily bag | Season |
|---|---|---|---|
| All Fish SpeciesInternal combustion motors prohibited. · Two-pole fishing not allowed | – | – | Always open |
| Fly Fishing Only | – | Catch & release only | Year-round |
– means no limit is listed for this water. Rules not shown here follow Washington's statewide regulations.
Plan your Merrill Lake trip
Merrill Lake fishing: common questions
Is Merrill Lake catch and release?
Some rules on Merrill Lake are catch and release only, covering All Fish Species. Check the table for the section and dates that apply.
Do Washington statewide fishing rules apply on Merrill Lake?
Where Merrill Lake has its own rule for a species, that rule replaces the statewide limit. For species not listed on this page, Washington's statewide regulations apply. Regulations are set by the Washington Department of Fish and Wildlife; confirm with the official 2026 regulations before keeping a fish.
Other Washington waters with special regulations
- Yakima River · Benton
- Columbia River
- Wind River · Skamania
- Drano Lake · Skamania
- Naselle River · Pacific
- Roosevelt Lake · Ferry/Grant/Lincoln/Okanogan/Stevens
- Cowlitz River · Cowlitz/Lewis
- Green River · Duwamish
- Grays River · Wahkiakum
- Nisqually River · Pierce/Thurston
- Nooksack River · Whatcom
- Humptulips River · Grays Harbor
Take Merrill Lake rules on the water
Identify your catch, check if it's a keeper, and log it. CatchVault is on iOS, with Android on the way.