
Oregon, United States
Oregon, United States
Oregon, United States
Oregon, United States
Washington, United States
Oregon, United States
Oregon, United States
Washington, United States
Oregon, United States

Want trophy-size catches? These Knappa spots deliver
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Smallmouth bass
length · weight
Largemouth bass
12 in · 1 lb 2 oz
Largemouth bass
13 in · 3 lb
Largemouth bass
14 in · 2 lb
Largemouth bass
15 in · 3 lb
Steelhead
22 in · 5 lb


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Check out the best fishing spots in and around Knappa, Oregon. Anglers using Fishbrain have logged: 1,008 catches for Largemouth bass, 510 catches for Rainbow trout, and 502 catches for Chinook salmon.
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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 Oregon 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 Largemouth bass as of April 16th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Memorable
Measurement
Aggregate
Lakes: 5 per day, 3 daily limits in possession unless noted under Exceptions.
Streams: No limit. No minimum length in streams.
No more than 3 over 15 inches in length in lakes.
Angling restricted to artificial flies and lures in streams above tidewater, May 22-Aug 31. See Exceptions where use of bait is allowed.
Lakes: Open all year.
Streams (including tidewaters and bays): Open during trout, salmon or steelhead seasons, except tidewater areas of Columbia River tributaries downstream from the city of St. Helens are open all year.
Micropterus nigricans

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