
Check which species have trophy potential in Willson Reservoir
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Willson Reservoir is a lake located in Josephine County, Oregon, United States. It is most popular for fishing Largemouth bass and Bluegill.
Learn what time of year and day to go fishing at Willson Reservoir. 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 Largemouth bass as of April 13th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Memorable
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Aggregate
Lakes: 5 per day, 3 daily limits in possession unless noted under location exceptions.
Streams: No limit.
No more than 1 over 15 inches in length in lakes.
No minimum length in streams.
Angling restricted to artificial flies and lures in streams above tidewater, May 22-Aug 31. See location exceptions where use of bait is allowed.
Lakes: Open all year.
Streams (including tidewaters and bays): Open during trout, salmon or steelhead seasons.
For more information please see Oregon Sport Fishing Regulations
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