US Army Corps of Engineers
Walla Walla District

Approved Jurisdictional Determinations

Walla Walla Regulatory Jurisdictional Determinations

Approved Waters of the U.S.

Permit Number

County

Description

Date

NWW-2016-00339 Blaine  Wetland Restoration - Adjacent 08/31/2018
NWW-2017-00720 Custer Road Widening 06/27/2018
NWW-2018-00148 Teton Delineation  05/04/2018 
NWW-2017-00599 Boise Wetland Restoration - Adjacent 04/06/2018
NWW-2017-00599 Boise Wetland Restoration - Abutting 04/06/2018

 

 

Dry Land Approved Jurisdictional Determination

Permit Number

County

Description

Date

NWW-2016-00606 Jefferson Water System Improvement 03/16/2018
NWW-2018-00050 Canyon Bank Stabilization 01/22/2018
NWW-2018-00023 Lemhi Gravel Pit Expansion 01/08/2018

 

Definition of Jurisdictional Waters

7 January 2019 - EPA and Army Postpone Public Hearing on Proposed New "Waters of the United States" Definition.  Due to the lapse in appropriations for the U.S. Environmental Protection Agency (EPA), EPA and the Department of the Army (Army) have postponed the planned January 23 public hearing on the proposed new "Waters of the United States" definition until after appropriations have passed to fund the EPA.  Publication of the proposed rule in the Federal Register is also postponed.  Information on the status of the public hearing will be posted on the EPA website at https://www.epa.gov/wotus-rule/epa-and-army-postpone-public-hearing-proposed-new-waters-united-states-definition.

 

CURRENT - Waters of the U.S. within the jurisdiction of the U.S. Army Corps of Engineers include:

• Traditional navigable waterways
• All wetlands adjacent to traditional navigable waters
Non-navigable waters that are relatively permanent
Special aquatic sites, i.e. wetlands that directly abut such waterways and their tributaries
Tributaries that flow intermittently, receive water from natural streams and lakes, and divert water to streams and creeks (Headwaters, Inc. v. Talent Irrigation District, 243 F.3d 526 (9th Cir. 2001))
Non-relatively permanent waters, if there is a significant nexus to traditional navigable waters