Unified Interior Regions

Region 9: Columbia-Pacific Northwest

Regions L2 Landing Page Tabs

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Elwha River flowing through former Aldwell reservoir
September 26, 2013

Elwha River flowing through former Aldwell reservoir

Aerial photograph of the former Lake Aldwell reservoir and the Elwha River 16 months following the removal of the Elwha Dam, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.

Former Mills reservoir during dam removal on the Elwha River
September 26, 2013

Former Mills reservoir during dam removal on the Elwha River

Aerial photograph of the former Lake Aldwell reservoir and the Elwha River 16 months following the removal of the Elwha Dam, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.

Pale gills of a herring with VEN
September 13, 2013

Pale gills of a herring with VEN

Pale gills of a herring with VEN (top) compared to those of an uninfected, healthy herring (bottom).

September 10, 2013

F2 East Transect – 2013

Permanent Site: F2 East Transect; Depth: 11.7 Meters (38.3 Feet); Distance from river mouth: 1.5 Kilometers (0.9 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15672004,-123.54969397; Site Description: This video was taken in September, about 40 days after the video on the west transect (F2 West Transect – 2013). Substrate is mainly gravel mixed

Water running down a creek.
September 5, 2013

Lost Dog Creek

A turbid Lost Dog Creek tumbles down steep slopes before feeding Lake Oswego.

Tanner Creek outfall
September 5, 2013

Tanner Creek

Tanner Creek outfall delivers stormwater runoff with insecticides to Tanner Creek, tributary of the Willamette River

Juvenile Steelhead to be tagged with a PIT tag
August 31, 2013

Juvenile Steelhead to be Tagged with a PIT Tag

Juvenile Steelhead to be tagged with a Passive Integrated Transponder tag for life-history research in the Wind River, WA.

August 30, 2013

L1 West Transect – 2013

Permanent Site: L1 West Transect; Depth: 11.2 Meters (36.9 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13957527,-123.59427175; Site Description: This transect is medium depth. The first 20 meters contains scattered boulders (0:08 seconds). Where there are no boulders, substrate is now

August 30, 2013

L1 East Transect – 2013

Permanent Site: L1 East Transect; Depth: 10.3 Meters (33.9 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13957527,-123.59359993; Site Description: This transect is medium depth. Substrate is now mainly fine sediment/sand/mud covered in a layer of brown diatoms (0:09 seconds). Scattered

August 28, 2013

H2 East Transect – 2013

Permanent Site: H2 East Transect; Depth: 8.0 Meters (26.3 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam

August 28, 2013

H2 West Transect – 2013

Permanent Site: H2 West Transect; Depth: 7.4 Meters (24.3 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15008216,-123.53277857; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam

August 27, 2013

GP1 East Transect – 2013

Permanent Control Site: GP1 East Transect; Depth: 7.2 Meters (23.5 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.11852521,-123.31538047; Site Description: This site was established as the eastern control. Depth is medium-shallow. Substrate is mainly a gravel/sand/cobble mixture surrounding

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USGS
November 30, 1995

Flood waters are peaking and beginning to recede in the Seattle-Tacoma, Washington, area according to streamflow specialists of the U.S. Geological Survey (USGS), a science agency of the Department of the Interior.