OAR 603-095-4010
Agricultural Drainage Maintenance Regions

The Oregon Department of Agriculture shall create five regions of the state for the purpose of implementing these rules.
(1) Region One shall include the following Oregon Counties: Washington, Yamhill, Polk, Marion, Benton, and Linn.
(2) Region Two shall include the following Oregon watershed basins : the remainder of the Willamette Basin not already included in Region One, Sandy, South Coast, and Umpqua.
(3) Region Three shall include the following Oregon watershed basins: North Coast/Lower Columbia, Mid Coast, Rogue, Klamath.
(4) Region Four shall include the following Oregon watershed basins: Middle Columbia-Hood, Deschutes, John Day, and Oregon Closed Lakes Bain.
(5) Region Five shall include the following Oregon watershed basins: Umatilla, Grande Ronde, Snake River/Hell’s Canyon, Powder, Malheur River, and Owyhee.

Source: Rule 603-095-4010 — Agricultural Drainage Maintenance Regions, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=603-095-4010 (accessed May 26, 2025).

603–095–0010
Definitions 603–095–0020
General Purpose 603–095–0030
General Policies 603–095–0040
Appeals 603–095–0100
Purpose 603–095–0120
Geographic and Programmatic Scope 603–095–0140
Requirements 603–095–0180
Complaints and Investigations 603–095–0300
Purpose 603–095–0320
Geographic and Programmatic Scope 603–095–0340
Prevention and Control Measures 603–095–0380
Complaints and Investigations 603–095–0400
Purpose 603–095–0420
Geographic and Programmatic Scope 603–095–0440
Prohibited Conditions 603–095–0460
Complaints and Investigations 603–095–0500
Purpose 603–095–0520
Geographic and Programmatic Scope 603–095–0540
Prevention and Control Measures 603–095–0560
Complaints and Investigations 603–095–0600
Purpose 603–095–0620
Geographic and Programmatic Scope 603–095–0640
Prohibited Conditions 603–095–0660
Complaints and Investigations 603–095–0700
Purpose 603–095–0720
Geographic and Programmatic Scope 603–095–0740
Conditions 603–095–0760
Complaints and Investigations 603–095–0800
Purpose 603–095–0820
Geographic and Programmatic Scope 603–095–0840
Required and Prohibited Conditions 603–095–0860
Complaints and Investigations 603–095–0900
Purpose 603–095–0920
Geographic and Programmatic Scope 603–095–0940
Prohibited Conditions 603–095–0960
Complaints and Investigations 603–095–1000
Purpose 603–095–1020
Geographic and Programmatic Scope 603–095–1040
Prevention and Control Measures 603–095–1060
Complaints and Investigations 603–095–1100
Purpose 603–095–1120
Geographic and Programmatic Scope 603–095–1140
Requirements 603–095–1160
Complaints and Investigations 603–095–1200
Purpose 603–095–1220
Geographic and Programmatic Scope 603–095–1240
Prevention and Control Measures 603–095–1260
Voluntary Water Quality Farm Plans 603–095–1280
Complaints and Investigations 603–095–1300
Purpose 603–095–1320
Geographic and Programmatic Scope 603–095–1340
Prevention and Control Measures 603–095–1360
Voluntary Water Quality Farm Plans 603–095–1380
Complaints and Investigations 603–095–1400
Purpose 603–095–1420
Geographic and Programmatic Scope 603–095–1440
Prohibited Conditions 603–095–1460
Complaints and Investigations 603–095–1500
Purpose 603–095–1520
Geographic and Programmatic Scope 603–095–1540
Prohibited Conditions 603–095–1560
Complaints and Investigations 603–095–1600
Purpose 603–095–1620
Geographic and Programmatic Scope 603–095–1640
Requirements 603–095–1660
Complaints and Investigations 603–095–1700
Purpose 603–095–1720
Geographic and Programmatic Scope 603–095–1740
Prevention and Control Measures 603–095–1760
Complaints and Investigations 603–095–1800
Purpose 603–095–1820
Geographic and Programmatic Scope 603–095–1840
Prohibited Conditions 603–095–1860
Complaints and Investigations 603–095–1900
Purpose 603–095–1920
Geographic and Programmatic Scope 603–095–1940
Prevention and Control Measures 603–095–1960
Voluntary Water Quality Farm Plans 603–095–1980
Complaints and Investigations 603–095–2000
Purpose 603–095–2020
Geographic and Programmatic Scope 603–095–2040
Prevention and Control Measures 603–095–2060
Complaints and Investigations 603–095–2100
Purpose 603–095–2120
Geographic and Programmatic Scope 603–095–2140
Characteristics to Achieve 603–095–2160
Complaints and Investigations 603–095–2200
Purpose 603–095–2220
Geographic and Programmatic Scope 603–095–2240
Prevention and Control Measures 603–095–2260
Complaints and Investigations 603–095–2300
Purpose 603–095–2320
Geographic and Programmatic Scope 603–095–2340
Prevention and Control Measures 603–095–2360
Complaints and Investigations 603–095–2400
Purpose 603–095–2420
Geographic and Programmatic Scope 603–095–2440
Prevention and Control Measures 603–095–2460
Complaints and Investigations 603–095–2500
Purpose 603–095–2520
Geographic and Programmatic Scope 603–095–2540
Prevention and Control Measures 603–095–2560
Complaints and Investigations 603–095–2600
Purpose 603–095–2620
Geographic and Programmatic Scope 603–095–2640
Prevention and Control Measures 603–095–2660
Complaints and Investigations 603–095–2700
Purpose 603–095–2720
Geographic and Programmatic Scope 603–095–2740
Prevention and Control Measures 603–095–2760
Complaints and Investigations 603–095–2800
Purpose 603–095–2820
Geographic and Programmatic Scope 603–095–2840
Prevention and Control Measures 603–095–2860
Complaints and Investigations 603–095–2900
Purpose 603–095–2920
Geographic and Programmatic Scope 603–095–2940
Prevention and Control Measures 603–095–2960
Complaints and Investigations 603–095–3000
Purpose 603–095–3020
Geographic and Programmatic Scope 603–095–3040
Requirements 603–095–3060
Complaints and Investigations 603–095–3100
Purpose 603–095–3120
Geographic and Programmatic Scope 603–095–3140
Requirements 603–095–3160
Complaints and Investigations 603–095–3200
Purpose 603–095–3220
Geographic and Programmatic Scope 603–095–3240
Prohibited Conditions 603–095–3260
Complaints and Investigations 603–095–3300
Purpose 603–095–3320
Geographic and Programmatic Scope 603–095–3340
Requirements 603–095–3360
Complaints and Investigations 603–095–3400
Purpose 603–095–3420
Geographic and Programmatic Scope 603–095–3440
Requirements 603–095–3460
Complaints and Investigations 603–095–3500
Purpose 603–095–3520
Geographic and Programmatic Scope 603–095–3540
Unacceptable Conditions 603–095–3560
Complaints and Investigations 603–095–3600
Purpose 603–095–3620
Geographic and Programmatic Scope 603–095–3640
Prevention and Control Measures 603–095–3660
Complaints and Investigations 603–095–3700
Purpose 603–095–3720
Geographic and Programmatic Scope 603–095–3740
Prevention and Control Measures 603–095–3760
Complaints and Investigations 603–095–3800
Purpose 603–095–3820
Geographic and Programmatic Scope 603–095–3840
Unacceptable Conditions 603–095–3860
Complaints and Investigations 603–095–3900
Purpose 603–095–3920
Geographic and Programmatic Scope 603–095–3940
Requirements 603–095–3960
Complaints and Investigations 603–095–4000
Purpose and Applicability 603–095–4005
Definitions 603–095–4010
Agricultural Drainage Maintenance Regions 603–095–4015
Notification to the Oregon Department of Agriculture – Maintenance Without a Permit 603–095–4020
Notification to Oregon Department of Agriculture – Districts and Persons 603–095–4025
Review of Notification 603–095–4030
Mandatory Notice Conditions 603–095–4035
Certifications of Compliance with Other Applicable Laws 603–095–4040
Prohibitions 603–095–4045
Variances 603–095–4050
Entry Upon Land 603–095–4055
Compliance and Enforcement Procedures 603–095–4060
Expedited Review

May 26, 2025

Rule 603-095-4010's source at or​.us