Northwestern Division Regulatory Notices

Portland District Inadvertent Discovery Plan for Cultural Resources and Historic Properties

Press Operations — Wed, 08 Apr 2026 20:18:28 GMT

Portland District Inadvertent Discovery Plan for Cultural Resources and Historic Properties

2026 Nationwide Permits Coastal Zone Concurrence, Oregon Department of Land Conservation & Development

Press Operations — Wed, 08 Apr 2026 20:16:38 GMT

2026 Nationwide Permits Coastal Zone Concurrence, Oregon Department of Land Conservation & Development

2026 Nationwide Permits Water Quality Certification Overview, Oregon Department of Environmental Quality

Press Operations — Wed, 08 Apr 2026 20:15:25 GMT

2026 Nationwide Permits Water Quality Certification Overview, Oregon Department of Environmental Quality

2026 Nationwide Permits Water Quality Certification, U.S. Environmental Protection Agency, Region 10

Press Operations — Wed, 08 Apr 2026 20:14:07 GMT

2026 Nationwide Permits Water Quality Certification, U.S. Environmental Protection Agency, Region 10

2026 Portland District Nationwide Permits Regional Conditions and Definitions

Press Operations — Wed, 08 Apr 2026 20:11:50 GMT

2026 Portland District Nationwide Permits Regional Conditions and Definitions

RGP-7-DEN: Channel Maintenance and Construction on the South Platte River and Tributaries to the South Platte River Conducted by the Mile High Flood District

Press Operations — Wed, 08 Apr 2026 19:21:04 GMT

Authorizes dredge or fill activities performed in waters of the United States by and within the boundaries of the Mile High Flood District (MHFD) that are conducted to restore, improve, and maintain channel stability and resiliency, improve stream and wetland function and habitat, improve public safety, and/or protect existing infrastructure.

RGP 96-DEN: Natural Disaster Mitigation and Flood Related Activities in Colorado

Press Operations — Wed, 08 Apr 2026 19:16:25 GMT

Authorizes the discharge of dredged or fill material into waters of the United States associated with certain natural disaster mitigation and flood-related activities within the state of Colorado.

RGP-02-MT: Fish Barriers, Ladders, Screens & Traps within the State of Montana

Press Operations — Wed, 08 Apr 2026 19:00:56 GMT

Fish Barriers, Ladders, Screens & Traps within the State of Montana

RGP 6: BPA-Funded Habitat Improvement Projects within the state of Oregon, Permit Instrument

Press Operations — Wed, 08 Apr 2026 18:44:35 GMT

RGP 6: BPA-Funded Habitat Improvement Projects within the state of Oregon, Permit Instrument

Wyoming Public Notice: 2026 NWPs-Regional Conditions-401WQCs

Press Operations — Fri, 13 Mar 2026 15:54:39 GMT

South Dakota Public Notice: 2026 NWPs-Regional Conditions-401WQCs

Press Operations — Fri, 13 Mar 2026 15:53:00 GMT

North Dakota Public Notice: 2026 NWPs-Regional Conditions-401WQCs

Press Operations — Fri, 13 Mar 2026 15:51:20 GMT

Iowa Public Notice: 2026 NWPs-Regional Conditions-401WQCs

Press Operations — Fri, 13 Mar 2026 15:49:49 GMT

Nebraska Public Notice: 2026 NWPs-Regional Conditions-401WQCs

Press Operations — Fri, 13 Mar 2026 15:48:23 GMT

Montana Public Notice: 2026 NWPs-Regional Conditions-401WQCs

Press Operations — Fri, 13 Mar 2026 15:46:53 GMT

Colorado Public Notice: 2026 NWPs-Regional Conditions-401WQCs

Press Operations — Fri, 13 Mar 2026 15:44:00 GMT

Colorado Public Notice: 2026 NWPs-Regional Conditions-401WQCs

GP-45 - Maintenance of Man-Made Lakes and Ponds - (MO)

Press Operations — Fri, 27 Feb 2026 14:50:47 GMT

GP-43 - Maintenance of Man-Made Lakes and Ponds - (KS, Including Indian Country)

Press Operations — Fri, 27 Feb 2026 14:48:48 GMT

GP-41 - Flood Recovery/Repair Activities - (MO, KS, Including Indian Country)

Press Operations — Fri, 27 Feb 2026 14:45:35 GMT

GP-40 - Request for Authorization Form Instructions (KS)

Press Operations — Fri, 27 Feb 2026 14:41:00 GMT