
Check which species have trophy potential in Walla Walla River
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Walla Walla River is a stream located in Umatilla County, Oregon, United States. It is also intersecting with Benton County, Washington. It is most popular for fishing Smallmouth bass, Largemouth bass, and Rainbow trout.
Learn what time of year and day to go fishing at Walla Walla River. 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 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 Smallmouth bass as of March 31st, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
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Lakes: 5 per day, 3 daily limits in possession unless noted under location Exceptions.
Streams: No limit.
No more than 3 over 15 inches in length in lakes.
No minimum length in streams.
Lakes: Open all year.
Streams: Open during trout, salmon or steelhead seasons only, except portions of Columbia River tributaries flooded by John Day and McNary dams are open all year.
For more information please see Oregon Sport Fishing Regulations
Micropterus dolomieui
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