US Army Corps of Engineers
Walla Walla District Website

Approved Jurisdictional Determinations

Walla Walla Regulatory Jurisdictional Determinations

Approved Waters of the United States

Permit Number County Description Date
NWW-2007-00633 Bonner Development - Residential 03/14/2019
NWW-2016-00618-I01 Franklin Development - Residential 04/25/2019
NWW-2019-00235 Twin Falls Development - Residential 06/26/2019
NWW-2003-2100220 Gem Development - Commercial 07/10/2019

Approved Non-Waters of the United States 

Permit Number County Description Date
NWW-2018-00676-I02 Bannock Development - Subdivision - Ag Conversion 01/08/2019
NWW-2018-00675-I02 Bannock Development - Subdivision - Ag Conversion 01/08/2019
NWW-2018-00631-I01 Bannock Development - Recreation - Golf Course 02/06/2019
NWW-2019-00064-I01 Caribou Development - Subdivision 02/04/2019
NWW-2019-00115 Kootenai Development - Commercial 02/20/2019
NWW-2019-00127 Ada Transportation 03/01/2019
NWW-2012-00423 Kootenai Transportation 03/13/2019
NWW-2014-00118-I02 Fremont Development  03/27/2019
NWW-2017-00747 Bonner Development  06/13/2019
NWW-2019-00241 Kootenai Development  05/17/2019
NWW-2019-00267-I02 Lemhi Water Delivery 06/14/2019


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


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