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Geomorphology

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Integrated Water Science Basins: Willamette River

The Willamette River Basin reflects the conflicting water demands between humans and ecosystems—particularly salmon— and the challenge resource managers face throughout the Pacific Northwest.
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Integrated Water Science Basins: Willamette River

The Willamette River Basin reflects the conflicting water demands between humans and ecosystems—particularly salmon— and the challenge resource managers face throughout the Pacific Northwest.
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Nehalem Bay Sediment Study

Assessment of Sedimentation Changes in the Nehelam Bay, Oregon
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Nehalem Bay Sediment Study

Assessment of Sedimentation Changes in the Nehelam Bay, Oregon
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Geomorphic Response to Fall Creek Lake Drawdowns

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

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

Assessing channel change, habitat health, and flood hazards across Oregon rivers and streams.
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Oregon Geomorphic Studies

Assessing channel change, habitat health, and flood hazards across Oregon rivers and streams.
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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."
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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."
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Sediment Fingerprinting in the Upper Klamath Basin

Sediment fingerprinting has been used successfully to identify land uses that are the major sources of sediment. This study will apply these techniques in a predominantly rural, volcanic landscape.
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Sediment Fingerprinting in the Upper Klamath Basin

Sediment fingerprinting has been used successfully to identify land uses that are the major sources of sediment. This study will apply these techniques in a predominantly rural, volcanic landscape.
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Chetco River Gravel Transport Study

In 2009, the USGS completed a comprehensive study of gravel transport and storage along the lower Chetco River.
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Chetco River Gravel Transport Study

In 2009, the USGS completed a comprehensive study of gravel transport and storage along the lower Chetco River.
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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.
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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.
Learn More

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.
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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.
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Geomorphology of the Sprague River Basin

The USGS documents historical and current channel and floodplain processes and conditions to assist management and regulatory agencies in evaluating restoration proposals and designing effective restoration and monitoring strategies for the Sprague River and its principle tributaries. The study involves multiple analyses, including assessments of historical channel change, riparian and floodplain...
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Geomorphology of the Sprague River Basin

The USGS documents historical and current channel and floodplain processes and conditions to assist management and regulatory agencies in evaluating restoration proposals and designing effective restoration and monitoring strategies for the Sprague River and its principle tributaries. The study involves multiple analyses, including assessments of historical channel change, riparian and floodplain...
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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.
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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.
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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.
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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.
Learn More
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