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Garden City Flood Risk Management Feasibility Study

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The U.S. Army Corps of Engineers, Walla Walla District (Corps), invites public comments regarding the scope of the Corps’ proposal to assist Garden City, Idaho (City) in conducting an Integrated Feasibility Study and Environmental Assessment to evaluate alternatives and recommend a plan to reduce the City’s risk from floodwaters from the Boise River. 

Garden City has repeatedly incurred damages as a result of flooding from the Boise River with nine significant floods within the last 30 years.  Should a 100-year flood event occur, approximately 74 percent of Garden City is expected to be inundated with floodwaters with damages estimated to exceed $315 Million (2013 estimate).  The 2017 flood, was less than the 50-year flood event, and flows exceeded channel capacity, damaging or threatening industrial, commercial, residential and public infrastructure.  Substantial flood fight efforts took place in order to prevent uncontrolled river diversion into residential and commercial districts. 

The Corps is soliciting public opinion on relevant issues and environmental effects that should be considered in the study. Scoping comments will be used to help: 1) identify potential and key issues to address; 2) explore potential flood-risk-management alternatives, in addition to no action; and 3) identify potential environmental effects. Written comments will be accepted through Dec. 16, 2018.

A public scoping open house will be held at Garden City Hall, located at 6015 North Glenwood Street, Garden City, Idaho, on Thursday, Nov. 15, 2018 from 6:30-8:30 p.m. Written comments will also be accepted at the meeting. 


A public scoping letter about the proposed study is available for viewing or downloading in the Links to the right.


Written comments will be accepted through Dec. 16, 2018. Information and comments submitted will be included in the public record. Electronic comments may be filed directly online using the NEPA Online Comment Form on the webpage, or by emailing to NEPANWW@usace.army.mil, noting “Garden City 205” in the subject line.

Comments may also be mailed to: 
U.S. Army Corps of Engineers
Walla Walla District
ATTN: PPL-C (Garden City 205)
201 North 3rd Avenue
Walla Walla, WA 99362-1876

Garden City FRM Feasibility Study Comment Form Instructions

Please fill out the form below. Comments that are submitted will be incorporated. This new draft document will be shared for additional comments in the future. The comment period ends November 24, 2018. All comments submitted will be considered and become part of the permanent public record. For more information about the Garden City Flood Risk Management Feasibility Study, please contact the Garden City coordinator at 509-527-7262.

Garden City FRM Feasibility Study Comment Form











Contact Us

U.S. Army Corps of Engineers, Walla Walla District
Attention:  CENWW-PPL-C, Garden City 205 
201 N. 3rd Avenue
Walla Walla, WA  99362-1876

509-527-7262

NEPANWW@usace.army.mil