Natural Resources


​​Landowners and water districts who wish to maintain agricultural drainage channels ​must contact ODA immediately to file a notification. ODA staff can work with producers to file a Variance request to allow work to occur beyond the Regional Dry Maintenance Time Period. Once a complete Variance request is filed, ODA will consult with the Oregon Department of Fish and Wildlife to consider the request and determine if work may proceed beyond the Regional Dry Maintenance Time Period.

New legislation (HB 2437, 2019 Legislature) ​now codified as ORS 196.906 – 196.919​ and implemented through OAR 603-095-4000 to 603-095-4060, authorizes maintenance activities without a Removal-Fill permit from the Oregon Department of State Lands (DSL) in dry, traditionally maintained channels under certain circumstances. The Oregon Department of Agriculture recently developed a new notice-based process that landowners and irrigation, drainage, and other entities organized under ORS 545, 547, 552, 553, or 554 (water districts​) ​must use if they are interested in agricultural maintenance of eligible ditches and streams that drain agricultural lands. This new process was developed in coordination with an interagency project team consisting of ODA, DSL and ODFW, as well as a Rule Advisory Committee (RAC) consisting of multiple stakeholders, to draft administrative rules (OAR 603-695-4000 to-4060 implementing ORS 196.906-196.919.

What do you need to know?

  • The new ODA Agricultural Drainage Channel Maintenance program provides for a simplified process “… by which agricultural landowners may maintain channels used for agricultural drainage … in a manner that protects, maintains, or improves ecological function of the channels and that upholds state objectives for fish recovery [OAR 603-095-4000].”
  • The new program transitions a portion of the current regulatory program at DSL to a notice-based program at ODA. ODA, DSL, and ODFW will coordinate on implementation.
  • The notice-based program allows for a more streamlined process to remove material from dry, traditionally maintained channels.  
  • Once validated by ODA, a Notice is good for five years. This means that the work described in the Notice may be completed according to all the mandatory and prohibited conditions anytime within a five year period starting when ODA validates the notice. 
  • Landowners and water districts should not conduct any removal or fill within a channel without contacting ODA or DSL.
  • Please note work that permanently​ impacts a wetland likely requires a permit from DSL. Contact DSL for more information.​

​​What you should know before you file a notification​

​Confirm the channels and maintenance activities are eligible under this new program. For more information, see the before-you-file details document.  

What you should know about the notification process

ODA must receive a Notice form at least 45 days before you wish to do the work. When determining the 45 day requirement for when work may begin, ODA will not include the day of receipt, Sundays, or holidays, and the last day cannot end on a weekend or holiday. Oregon does provide options for quick review and approval of work in emergencies. For more information, see the notification process details document


Agricultural Drainage Channel Maintenance Expedited Review Form

Expedited review form

Agricultural Drainage Channel Maintenance Notification Form

Notification form

Request for Variance from Mandatory Conditions in a Valid Notice Issued under Agricultural Channel Rules

Variance form


Agricultural Drainage Channel Maintenance: Interim Manual of Best Management Practices

Manual of best practices handout

Guidelines for Stream and Ditch Maintenance

Stream and ditch maintenance handout

House Bill 2437

Authorizes maintenance activities in dry, traditionally maintained channels to be conducted without removal or fill permit subject to certain conditions. House Bill 2437

House Bill 2437: What It Is, What It Does, and What It Does Not Do

HB 2437 informational document

Stream and Ditch Maintenance Regulations: Oregon departments of Agriculture, State Lands

Streamside areas handout

Waterways and Wetlands: Department of State Lands Permits and Authorizations

Information regarding removal-fill permits. Waterways & Wetlands webpage




​ODA contact​s

Tyler Manitsas
Agricultural Drainage Channel Maintenance Specialist
Phone: 971-218-1180

General Program Information


Phone: 503-986-4700

ODFW contact

Nancy Taylor

Agricultural Drainage Channel Maintenance Coordinator
Phone: 503-947-6099

DSL contacts

Aquatic Resource Coordinator (by county)
Phone: 503-986-5200
Staff contact directory

Email notifications​

To receive updates via email, sign up for the Ag Channel Maintenance subscription list​.