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Dorothy Ditch is a canal located in Umatilla County, Oregon, United States. It is most popular for fishing Bull trout and Rainbow trout.
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 Bull trout as of April 1st, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Aggregate
Closed to angling for bull trout unless noted under location exceptions.
See exceptions for catch-and-release angling under exceptions for Imnaha and Wenaha rivers.
Lakes: 5 per day, 3 daily limits in possession. Open all year.
Streams: (including tidewaters and bays): 2 per day, 3 daily limits in possession. Open May 22 - Oct 31, unless noted under location exceptions.
Trout is considered all rainbow/redband (except steelhead), cutthroat, brook, brown, bull, golden, lake and tiger trout; Atlantic salmon and kokanee . Check exceptions and zone regulations for waters where Chinook salmon and/or coho salmon (landlocked) may be considered trout. Salmon under 15 inches are considered trout, except coho salmon, which are always considered salmon regardless of size.
Angling restricted to artificial flies and lures in streams above tidewater, May 22 - Aug 31. See Location Exceptions to Regulations where use of bait is allowed.
8 inch minimum length.
Only 1 trout over 20 inches in length may be taken per day in lakes.
Rainbow trout over 20 inches are considered steelhead in streams.
Kokanee included in trout limits unless noted under location exceptions.
No limit on size or number of brook or brown trout in streams unless noted
under location exceptions.
For more information please see Oregon General Statewide Regulations
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