Oregon Water Science Center

Lakes and Rivers

Filter Total Items: 49
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: January 8, 2015
Status: Active

Nutrient and Sediment Loading to Upper Klamath Lake

The USGS employs state-of-the-science techniques to estimate nutrient and suspended-sediment loads to Upper Klamath Lake.

Contacts: Liam Schenk
Date published: January 8, 2015
Status: Completed

Nutrient Loading to Lost River and Klamath River Subbasins

The USGS has characterized nutrient concentrations in the Klamath River and Lost River drainages over multiple years, identified spatial and temporal patterns in nutrient and organic carbon concentrations, and quantified surface water nutrient loads entering and exiting the Klamath Project.

Contacts: Liam Schenk
Date published: December 18, 2014
Status: Completed

1964 Flood Commemoration

As part of a multiagency collaboration, the USGS commemorated the 50th anniversary of the 1964 Flood. Information about the event, stories, timelines, and other tools were provided through the Silver Jackets organization.

Date published: October 10, 2014
Status: Completed

Umpqua River Basin Studies

The Wild and Scenic North Umpqua River is one of the highest-quality waters in the State of Oregon, supporting runs of wild salmon, steelhead, and trout. The USGS has been studying water-quality in the Umpqua River Basin since 1998.

Date published: October 5, 2014
Status: Active

Fall Creek Drawdown

Each autumn Fall Creek Lake is drawn down to allow endangered juvenile salmonids to pass freely through the dam. The drawdowns involve lowering the lake water level to the lake bed, creating a fluvial environment characterized by large amounts of sediment being transported through the dam and into Fall Creek and the Middle Fork Willamette River.

Date published: October 31, 2013
Status: Active

Clackamas River Basin Water-Quality Assessment

Starting in 1997, the USGS began routinely studying water resources in the Clackamas River Basin. Whether it be assessing harmful algal blooms, runoff issues, streamflow, or watershed health, the USGS has worked with its partners to maintain one of Oregon's most beloved rivers.

Date published: October 5, 2012
Status: Completed

Assessing Mercury Loads in Cottage Grove Reservoir

Cottage Grove Reservoir is an impoundment of the Coast Fork of the Willamette River and is managed by the U.S. Army Corps of Engineers (USACE) as part of the Willamette Valley Flood Control Plan.  The reservoir is currently under a fish consumption advisory because of elevated levels of mercury in fish tissue observed in an Oregon Department of Environmental Quality sampling survey in 2003 (...

Contacts: Liam Schenk
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."

Date published: October 5, 2007

Yakima River Water-Quality Studies

From 1986 to 2009, the USGS studied various aspects of watershed health in the Yakima River Basin. The results from these studies have been published and are available online.

Contacts: Daniel R Wise
Date published: May 16, 2007
Status: Completed

Marmot Dam Removal

Marmot Dam on the Sandy River was removed in 2007 as part of decommissioning of Portland General Electric’s Bull Run Hydroelectric Project. Removal of the 15-meter-tall dam would allow the Sandy River to flow freely for the first time in nearly 100 years and make upstream habitat more accessible to anadromous fish.

Contacts: Mackenzie Keith