Oregon Water Science Center

Streamflow

Filter Total Items: 13
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: 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 12, 2017
Status: Active

Willamette River Basin Dissolved Gas Monitoring Network

USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along tributaries of the Willamette River.

Date published: November 2, 2017
Status: Active

Water Quality in the Willamette River at Portland, Oregon

The U.S. Geological Survey (USGS) has been monitoring water quality in the Willamette River for many years. The USGS National Water-Quality Assessment Program (NAWQA) collects water samples from the Willamette River at Portland, as well as from select sites upstream, as part of a continuing effort to assess the quality of the Nation's waters. The USGS Oregon Water Science Center has multiple...

Contacts: Stewart Rounds
Date published: August 22, 2017
Status: Active

Willamette River Studies

Welcome to the Willamette River Study page. Here you will find links to USGS research for the Willamette River and the Willamette River Basin.

Date published: May 18, 2017
Status: Completed

Water Temperature Modeling in the Middle Fork Willamette and South Santiam River Basins

Hills Creek, Lookout Point, and Dexter Dams are located on the Middle Fork Willamette River upstream of Eugene in western Oregon, and are important resources managed by the U.S. Army Corps of Engineers (USACE) for flood control, hydroelectric power, recreation, navigation, and irrigation. On the South Santiam River east of Albany in western Oregon, Green Peter and Foster Dams provide functions...

Contacts: Stewart Rounds
Date published: May 2, 2017
Status: Active

City Beavers: Tualatin River Basin Beaver Study

Beavers and their dams are common sights along creeks in the Tualatin River basin. Beaver help create diverse habitats for many other animals, including birds, fish, and amphibians. The USGS studying the affect beaver activity has on the amount and quality of water in local streams, so that agencies in the basin can make strategic management and habitat restoration decisions based on science...

Date published: April 6, 2017

A Thermal Mosaic for the Willamette River

The U.S. Army Corps of Engineers operates 12 dams in the Willamette River Basin. The dams alter natural temperature and hydrologic regimes. Unnatural water temperatures can negatively impact all life stages of salmonid fish species. Water temperature in the mainstem Willamette River regularly exceeds the standard of 18.0 °C (64.4 °F) designated for salmon and trout rearing and migration for...

Date published: March 30, 2017
Status: Active

Lower Columbia River Dissolved Gas Monitoring Network

USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along the lower Columbia River.

Contacts: Heather M Bragg
Date published: October 31, 2015
Status: Active

North Santiam River Basin Study

The streamflow and water-quality conditions monitored by the USGS in the North Santiam River basin provide valuable information to water resource managers

Date published: May 1, 2011
Status: Active

McKenzie River Source Water Study

Drinking water for the city of Eugene, Oregon, is drawn from the McKenzie River, a high-quality source that is nonetheless threatened by urban, agricultural, and forestry land uses upstream as well as by changes in water management in the watershed. In 2002, the USGS began monitoring dissolved pesticides in the McKenzie River and its tributaries.

Date published: April 24, 2009
Status: Active

Environmental Flow Studies for Middle Fork Willamette, McKenzie, and Santiam River Basins

Environmental flows are defined as "streamflow needed to sustain ecosystems while continuing to meet human needs."