
Check which species have trophy potential in Knuppenburg Lake
Scan the QR code to download the app!


Continue browsing catches and catch locations in the Fishbrain app
Scan the QR code to download the app!
Knuppenburg Lake is a lake located in Lewis County, Washington, United States. It is most popular for fishing Brown trout, Brook trout, and Rainbow trout.
Learn what time of year and day to go fishing at Knuppenburg Lake. Download Fishbrain today to look for new fishing spots, scout new fishing access, or prep for your next trip.

Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.
Fishing regulations in Washington can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.
Below you will see fishing regulations for catching Brown trout as of April 2nd, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Min size
Measurement
Aggregate
The combined daily limit for an angler that fishes in both rivers and lakes on the same day is 5 trout, no more than 2 may be from rivers.
Brown Trout, Cutthroat Trout, Rainbow Trout, Golden Trout, Tiger Trout, and Grayling:
When fishing with bait, all trout that are lawful to possess and are equal to or greater than the minimum size are counted as part of the daily limit whether kept or released.
For more information please see State of Washington Fishing Regulations
Salmo trutta
41.3 miles away
47.9 miles away
48.5 miles away
49.3 miles away
49.5 miles away
52.0 miles away
53.2 miles away
54.6 miles away
55.3 miles away
58.7 miles away
63.7 miles away
65.3 miles away
70.6 miles away
71.6 miles away
75.8 miles away
76.4 miles away
76.6 miles away
98.5 miles away
103.9 miles away
106.9 miles away
107.5 miles away
111.0 miles away
112.0 miles away
115.8 miles away
Suggest changes to improve what we show.

Free trial available