An official website of the United States government
Here's how you know
Official websites use .mil
A
.mil
website belongs to an official U.S. Department of Defense organization in the United States.
Secure .mil websites use HTTPS
A
lock (
lock
)
or
https://
means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.
Skip to main content (Press Enter).
US Army Corps of Engineers
Portland District Website
®
About
Centers of Expertise
Hydroelectric Design Center
Volunteering
Business With Us
Construction Quality Management Course
Contracting
Small Business
Section 408 - Altering Corps Property
Real Estate
Missions
Cultural Resources
Emergency Management
Environmental Stewardship
Algae
Oaks Bottom
Fish
AFEP
Counts
WVP BiOP
Bird Hazing
Cole Rivers Hatchery
Sediment
Sea Lion Management
Cormorant Management
US Moorings cleanup
Willamette Valley Cleanup
Flood Risk Management
Dams and Reservoirs
Dam Safety
Managing Risk
Spillway Gates
Flood After Fire
Floodplain
Levees
Water Forecasts
Hydropower
Navigation
Pile dikes
Columbia River jetties
Projects and Plans
Master Plans
Portland Metro Levee System
Lower Columbia River Dredged Material Management Plan
Recreation
Regulatory
Contact
Notices
Environmental Impact Statements
Tribal Relationships
The Dalles Lock & Dam Tribal Housing Village Development Plan
Locations
Columbia River
Bradford Island
Rogue River
Willamette Valley
System Evaluation (EIS)
WRDA22-Report
Injunction
Navigation Projects
Baker Bay
Chetco River
Columbia-L. Willamette
Coos Bay
Coquille River
Depoe Bay
Mouth of the Columbia
Nehalem River
Old Mouth of the Cowlitz
Port Orford
Rogue River-Gold Beach
Skipanon Channel
Tillamook Bay
Vancouver to The Dalles
Wahkiakum Ferry
Westport Slough
Yaquina Bay
Port of Newport Navigation Improvement Project
Mount. St. Helens
Corps Locations
Careers
Media
Pet Calendars
News Releases
News Stories
Public Notices
Navigation Notices
Fact Sheets
Images
Videos
Social Media
Library
Aerial photos
eGIS
Contact
STEM programs
News Media Relations
USACE Office Locator
RSS
Home
/
Media
/
News Releases
Media
News Releases
News Stories
Public Notices
Images
Fact Sheets
Videos
Social Media
News Releases By Year
2025 (11)
2024 (16)
2023 (17)
2022 (28)
2021 (31)
2020 (35)
2019 (34)
2018 (52)
2017 (45)
2016 (31)
2015 (42)
2014 (59)
2013 (54)
2012 (29)
News Releases
Results:
Tag:
Earthquake hazard analysis
Clear
11
Jun 2021
Corps Finds No Significant Environmental Impact Reducing Detroit Dam’s Maximum Elevation Pool
The Portland District found no significant environmental impacts associated with reducing Detroit Dam’s Reservoir maximum pool elevation by five feet to curb the risk of a large earthquake causing the spillway gates to buckle.