Public Notices

Listed below are the current Public Notices published by the Walla Walla District for proposed projects within the state of Idaho. The Public Notices are sorted by Effective Date and are provided in PDF format. You must have Adobe Acrobat Reader installed on your PC to view these files. 

Viewing Public Notices. To view a Public Notice, left-click on the Permit Application Number (highlighted in blue). To download the file to your PC, right-click on the Permit Application Number, then select "Save Target As" from the menu.

How to Submit Comments. To submit comments via email, cut and paste the email address of the respective Project Manager's from the table below into an email and in the subject line of your email enter: Public Notice Comments for (referencing the specific project).  To submit comments in writing, send them to the respective Project Manager at the U.S. Army Corps of Engineers, Walla Walla District Regulatory Division, 720 E. Park Blvd., Suite 245, Boise, ID 83712. All comments should include the permit application number and project name, your name, address, and phone number.

SPECIAL PUBLIC NOTICE: 2020 Nationwide Permit Reissuance and Request for Comments

Published Sept. 30, 2020
Expiration date: 11/16/2020

On September 15, 2020, the U.S. Army Corps of Engineers published in the Federal Register its proposal to reissue the 52 existing nationwide permits (NWPs) and issue five new NWPs. 

Nationwide permits are general permits issued on a nationwide basis to streamline the authorization of activities that result in no more than minimal individual and cumulative adverse environmental effects. Many of the proposed NWPs require notification to the district engineer before commencing those activities, to ensure that the activities authorized by those NWPs cause no more than minimal individual and cumulative adverse environmental effects.  

National Issues Concerning the Proposed NWPs: The Federal Register notice is the public’s opportunity to comment on the proposed NWPs, general conditions, and definitions.  Comments on national issues relating to these NWPs should be submitted to docket number COE-2020-0002 at, or by email to or by mail to Headquarters, U.S. Army Corps of Engineers, Directorate of Civil Works, ATTN: CECW-CO-R, 441 G Street, N.W., Washington, D.C. 20314-1000. Instructions for submitting comments are provided in the September 15, 2020 Federal Register notice. Comments on the proposed NWPs are due by November 16, 2020.

Regional Issues Concerning the Proposed NWPs, Including Regional Conditioning: Division engineers are authorized to add regional conditions specific to the needs and/or requirements of a particular region or state. Regional conditions are an important mechanism to help ensure that the adverse environmental effects of activities authorized by the NWPs are no more than minimal, both individually and cumulatively. Division engineers may also suspend or revoke specific NWPs in certain geographic areas (e.g., states or watersheds) or high-value aquatic systems where the adverse environmental effects caused by activities authorized by those NWPs may be more than minimal. An enclosure for this public notice (Attachment A) lists the proposed regional conditions for the State of Idaho currently under consideration by the Corps of Engineers Northwestern Division.  The Walla Walla District is seeking comments on the proposed regional conditions and seeking comments on the need for additional regional conditions to help ensure that the adverse environmental effects of activities authorized by the proposed NWPs are no more than minimal, individually and cumulatively. Unless otherwise noted, all proposed regional conditions listed on this enclosure are applicable for activities in the state of Idaho. Comments on regional issues relating to the proposed NWPs and proposed regional conditions should be sent to the Walla Walla District – Regulatory Division, 720 E. Park Blvd, Suite 245, Boise, Idaho, 83712, (208) 433-4464 ( Comments relating to regional conditions are due by November 16, 2020. Similar public notices proposing regional conditions in other regions or states are being published concurrently by other division or district offices. After the final NWPs are issued, the final regional conditions will be issued after they are approved by the Division Commander.

States, tribes, and other certifying authorities will make their Clean Water Act Section 401 water quality certification (WQC) decisions after reviewing the proposed NWPs. States will make their Coastal Zone Management Act (CZMA) consistency determination decisions after reviewing the proposed NWPs.

Draft decision documents for each of the proposed NWPs, which include environmental documentation prepared for the purposes of the National Environmental Policy Act, have been written by Corps Headquarters. The decision documents will address compliance of the NWPs with the requirements for issuance under the Corps’ general permit authority. These draft decision documents, as well as the proposed NWPs, are available for viewing at, docket number COE-2020-0002. Final decision documents will be prepared for the NWPs that are issued. 

Enclosed is an index of the proposed NWPs and conditions.  Anyone wishing to provide comments may obtain a full text copy of the NWPs through the Corps Home Page at:

Index of Proposed Nationwide Permits, Conditions, and Definitions

Nationwide Permits

1. Aids to Navigation

2. Structures in Artificial Canals

3. Maintenance

4. Fish and Wildlife Harvesting, Enhancement, and Attraction Devices and Activities

5. Scientific Measurement Devices

6. Survey Activities

7. Outfall Structures and Associated Intake Structures

8. Oil and Gas Structures on the Outer Continental Shelf

9. Structures in Fleeting and Anchorage Areas

10. Mooring Buoys

11. Temporary Recreational Structures

12. Oil or Natural Gas Pipeline Activities

13. Bank Stabilization

14. Linear Transportation Projects

15. U.S. Coast Guard Approved Bridges

16. Return Water From Upland Contained Disposal Areas

17. Hydropower Projects

18. Minor Discharges

19. Minor Dredging

20. Response Operations for Oil or Hazardous Substances

21. Surface Coal Mining Activities

22. Removal of Vessels

23. Approved Categorical Exclusions

24. Indian Tribe or State Administered Section 404 Programs

25. Structural Discharges

26. [Reserved]

27. Aquatic Habitat Restoration, Establishment, and Enhancement Activities

28. Modifications of Existing Marinas

29. Residential Developments

30. Moist Soil Management for Wildlife

31. Maintenance of Existing Flood Control Facilities

32. Completed Enforcement Actions

33. Temporary Construction, Access, and Dewatering

34. Cranberry Production Activities

35. Maintenance Dredging of Existing Basins

36. Boat Ramps

37. Emergency Watershed Protection and Rehabilitation

38. Cleanup of Hazardous and Toxic Waste

39. Commercial and Institutional Developments

40. Agricultural Activities

41. Reshaping Existing Drainage Ditches

42. Recreational Facilities

43. Stormwater Management Facilities

44. Mining Activities

45. Repair of Uplands Damaged by Discrete Events

46. Discharges in Ditches

47. [Reserved]

48. Commercial Shellfish Mariculture Activities

49. Coal Remining Activities

50. Underground Coal Mining Activities

51. Land-Based Renewable Energy Generation Facilities

52. Water-Based Renewable Energy Generation Pilot Projects

53. Removal of Low-Head Dams

54. Living Shorelines

A. Seaweed Mariculture Activities

B. Finfish Mariculture Activities

C. Electric Utility Line and Telecommunications Activities

D. Utility Line Activities for Water and Other Substances

E. Water Reclamation and Reuse Facilities

Nationwide Permit General Conditions

1. Navigation

2. Aquatic Life Movements

3. Spawning Areas

4. Migratory Bird Breeding Areas

5. Shellfish Beds

6. Suitable Material

7. Water Supply Intakes

8. Adverse Effects from Impoundments

9. Management of Water Flows

10. Fills Within 100-Year Floodplains

11. Equipment

12. Soil Erosion and Sediment Controls

13. Removal of Temporary Fills

14. Proper Maintenance

15. Single and Complete Project

16. Wild and Scenic Rivers

17. Tribal Rights

18. Endangered Species

19. Migratory Birds and Bald and Golden Eagles

20. Historic Properties

21. Discovery of Previously Unknown Remains and Artifacts

22. Designated Critical Resource Waters

23. Mitigation

24. Safety of Impoundment Structures

25. Water Quality

26. Coastal Zone Management

27. Regional and Case-by-Case Conditions

28. Use of Multiple Nationwide Permits

29. Transfer of Nationwide Permit Verifications

30. Compliance Certification

31. Activities Affecting Structures or Works Built by the United States

32. Pre-Construction Notification

District Engineer’s Decision

Further Information


Best management practices (BMPs)

Compensatory mitigation

Currently serviceable

Direct effects


Ecological reference


Establishment (creation)

High Tide Line

Historic property

Independent utility

Indirect effects

Loss of waters of the United States

Navigable waters

Non-tidal wetland

Open water

Ordinary high water mark

Perennial stream


Pre-construction notification





Riffle and pool complex

Riparian areas

Shellfish seeding

Single and complete linear project

Single and complete non-linear project

Stormwater management

Stormwater management facilities

Stream bed

Stream channelization


Tidal wetland

Tribal lands

Tribal rights

Vegetated shallows




Stay up to date on our most recent Public Notices.

The Public Notice, drawings, and attachments will be available for you to view, download, and/or print here on our Public Notice home page.

To add or update your information to our E-Notification list, please email us with your updated information, or please fill out one or both forms below for Idaho Counties and/or Idaho Watershed Public Notice Distribution List(s) and email them to us at:


Idaho Counties PN Distribution List Form

Idaho Watershed PN Distribution List Form