Lilliwaup River Fishing Regulations
Mason County, Washington · 2026 size limits, bag limits, and seasons
Lilliwaup River is a river in Mason County, Washington. It has its own fishing regulations for 8 species, including Brook Trout, Brown Trout, Cutthroat Trout, and Golden Trout. These rules replace Washington's statewide limits on this water.
Fish with special rules on Lilliwaup River
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Lilliwaup River limits by species (2026)
| Species | Size limit | Daily bag | Season |
|---|---|---|---|
| All Fish SpeciesSelective gear rules apply. | – | – | Always open |
 Brook Trout | – | – | May 23 – Aug 31 |
 Brown Trout | – | – | May 23 – Aug 31 |
 Cutthroat Trout | – | – | May 23 – Aug 31 |
| – | Catch & release only | May 23 – Aug 31 | |
 Golden Trout | – | – | May 23 – Aug 31 |
 Lake Trout | – | – | May 23 – Aug 31 |
 Rainbow Trout | – | – | May 23 – Aug 31 |
 Steelhead | – | – | May 23 – Aug 31 |
| Wild Rainbow TroutWild fish only | – | Catch & release only | May 23 – Aug 31 |
– means no limit is listed for this water. Rules not shown here follow Washington's statewide regulations.
Plan your Lilliwaup River trip
Lilliwaup River fishing: common questions
What fish have special regulations on Lilliwaup River?
8 species have rules specific to Lilliwaup River: Brook Trout, Brown Trout, Cutthroat Trout, Golden Trout, Lake Trout, Rainbow Trout, Steelhead, and Wild Rainbow Trout.
What is the brook trout limit on Lilliwaup River?
No size limit is listed for Brook Trout on Lilliwaup River. Season: May 23 – Aug 31.
What is the brown trout limit on Lilliwaup River?
No size limit is listed for Brown Trout on Lilliwaup River. Season: May 23 – Aug 31.
What is the cutthroat trout limit on Lilliwaup River?
No size limit is listed for Cutthroat Trout on Lilliwaup River. Season: May 23 – Aug 31. Limits change during the year.
Is Lilliwaup River catch and release?
Some rules on Lilliwaup River are catch and release only, covering Cutthroat Trout and Wild Rainbow Trout. Check the table for the section and dates that apply.
Do Washington statewide fishing rules apply on Lilliwaup River?
Where Lilliwaup River 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 Lilliwaup River rules on the water
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