Oregon Water Science Center

Watershed/Basin Studies

Filter Total Items: 40
Date published: January 24, 2020
Status: Active

Fernhill Natural Treatment Wetlands

The amount and type of algae in the Tualatin River affect the river’s water quality and ecological health, as well as its value as a recreational resource. As a relatively new source of summertime flow to the upper Tualatin River, discharges from the Fernhill Natural Treatment System (NTS) have the potential to enhance or degrade downstream water quality. Discharges of low nutrient...

Contacts: Erin Poor
Date published: November 26, 2018
Status: Active

Synthesizing the State of Science of Coldwater Refuges in the Willamette River Basin

Many regulatory, management, and conservation organizations are interested in protecting and increasing coldwater refuges and thermal diversity for Chinook salmon, steelhead, and other natives fishes in the Willamette River basin. This study synthesizes current and emerging science related to coldwater refuges and thermal diversity. It is also develops conceptual frameworks for understanding...

Contacts: Krista Jones
Date published: September 26, 2018
Status: Active

Controls on Habitat for Native Lampreys in the Umpqua River Basin

Native lampreys are culturally significant fishes for tribal communities in Oregon. As such, the USGS has begun working with the Cow Creek Band of Umpqua Tribe of Indians to study changes that may be affecting habitat for native Pacific and western brook lampreys in the Umpqua River basin.

Date published: August 21, 2018
Status: Active

Willamette Instream Flows

When streamflow fluctuates in the Willamette River so does the amount of available rearing habitat used by Threatened Upper Willamette River spring Chinook salmon and winter steelhead trout. The USGS investigates how flow conditions and dam operations affect rearing habitat availability so that flow managers can maintain suitable flows for these species.

Date published: August 8, 2018
Status: Active

Geomorphic Response to Fall Creek Lake Drawdowns

The USGS has been documenting the geomorphic response to the annual Fall Creek Lake drawdown since 2011.

Date published: January 31, 2018
Status: Active

Vertical Hydraulic Gradient at the Sediment-Water Interface in Upper Klamath Lake

"The goal of this project is to characterize the vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake."

Date published: January 23, 2018
Status: Active

Ecosystem Effects of Increased Coal Transport Across the Pacific Northwest

Proposed new coal export terminals in Washington and Oregon could increase rail traffic through the Northwest and potentially increase unintended release of coal dust to the environment.

Date published: December 21, 2017
Status: Active

Malheur Lake Light Transmission Study

The Malheur National Wildlife Refuge provides habitat for a variety of highly valued ecosystem services, including shorebirds, waterfowl, and a diversity of other wildlife species. 

Contacts: Tamara Wood
Date published: December 20, 2017
Status: Active

Future Climate Effects on Columbia and Willamette River Levees

USGS research directly helps local public agencies that are responsible for the design and maintenance of the levees that surround the northern Portland metropolitan area with the goal of protecting life and property in the event of flooding from the Columbia and Willamette Rivers that surround the city.

Date published: December 20, 2017
Status: Active

Upper Klamath River Basin Forecasts

"Determining water availability in the Upper Klamath Basin has always had a degree of uncertainty as a result of the complex hydrology and geology in the region and limited streamflow data."

Contacts: John Risley
Date published: December 15, 2017
Status: Active

Groundwater of the Umatilla River Basin

Water management in the arid Umatilla Basin has become increasingly complex in recent years. Competing demands from society for generating hydro-electric power, maintaining and restoring fisheries, restoring watershed health, providing water for growing communities, and increasing agricultural production through irrigation, have put water resources in the Umatilla Basin and throughout the...

Date published: December 15, 2017
Status: Active

Harney Basin Groundwater Study

This study will characterize and quantify the groundwater system in the Harney Basin to address gaps in our present understanding.