Perennial Stream Flow Map Deadline To Shift In Proposed Rulemaking: Comment Period Open Oct. 1–31 - 10/01/25

SALEM, Ore. — On Sept. 3, 2025, the Board of Forestry directed the Oregon Department of Forestry to file a Notice of Proposed Rulemaking to modify the deadline for the publication of maps related to perennial flow of streams.

The rule proposed for modification directs a shift to a modeled approach, after a flow duration model sufficient for regulatory purposes is available and before July 1, 2025. However, a sufficient model was not available by July 1, 2025. A sufficient model is still being identified. The proposed rule would change this deadline to July 1, 2026.

Public comments on the proposed rule will be accepted from Oct. 1 to Oct. 31 at 5 p.m., and a virtual rulemaking hearing will be held on Oct. 21 at 1 p.m. The Notice of Proposed Rulemaking includes important details about the proposed rule text and instructions for submitting comments and participating in the rulemaking hearing.

More information on this rulemaking effort and ongoing updates can be found on the department’s Rulemaking activity web page.