Data

The LANDFIRE (LF) 2001 (version 1.0.5) Refresh of the LF National Base Map enhanced the layers of the LF National data set to provide a foundation upon which to build an updated geospatial data set. The enhancements were developed to facilitate comparative analyses, evaluate trends, and potentially monitor changes over time. In particular, LF 2001 enhancements addressed: incomplete data...

This model archive summary (MAS) and associated model calibration data contains two model evaluations: 1) a model validation of the prior-published sediment surrogate model at this site for WY 2019-2023, and 2) a new log-transformed turbidity-suspended sediment (SSC) regression model computing SSC from 01/17/2024 to 2/27/2025 following the drawdown of the John C. Boyle reservoir and...

The USGS computed streamflow during 2016 and 2017 at two sites – one on Bronson Creek (USGS station 453250122494501) and one on Fanno Creek (USGS station 452738122474100), which are tributaries to the Tualatin River in northwestern Oregon. The computed streamflows from the two aforementioned sites were then used to estimate the corresponding streamflow at two other sites- USGS station...

Bedload-transport capacity models of the Siletz River, Oregon, were developed using standard sediment transport equations (Parker, 1990a,b; Wilcock and Crowe, 2003; Recking, 2013) for the reach from Moonshine Park to the town of Siletz, Oregon (river kilometers 87.2 to 68.5) to evaluate bedload transport capacity over a broad range of streamflows. Models were used to assess longitudinal...

The U.S. Geological Survey (USGS) Oregon Water Science and Forest and Rangeland Ecosystem Science Centers have developed a spatial database of the stream network in the Willamette River Basin classified by degree of obstruction to fish passage. This effort was funded by the USGS Ecological Flows program in cooperation with the Integrated Water Availability Assessments in the Willamette...

Hydraulic models of the Siletz River, Oregon, were developed using the U.S. Army Corps of Engineers Hydraulic Engineering Center River Analysis System (HEC-RAS; version 6.5). A one-dimensional (1D) steady-flow model was developed from Moonshine Park to the City of Siletz, Oregon (river kilometer [Rkm] 87.2 to 68.5). Results from the 1D model provided insights into longitudinal patterns...

Riverbed grain-size is an important indicator of geomorphic and ecological processes and conditions, as it provides a key building block for channel form and benthic aquatic habitats. Understanding the distribution of riverbed sediment throughout a basin can help inform a variety of river and ecosystem management questions. This dataset provides estimates of median riverbed grain-sizes...

Beaver dams can help streams connect to their floodplains. These floodplain connections can expand the range of available aquatic habitats and aid in the restoration of stream and floodplain processes. North American beavers (Castor canadensis) occupy a wide variety of aquatic habitats; however, their ability to build dams, the agent of stream and floodplain change, is constrained in...

Beaver dams affect stream hydraulics by temporarily impounding water in stream channels. Beaver dams and their associated impoundments can potentially influence streamflow hydrographs and stream hydraulics in multiple ways including altering the magnitude and duration of high flows, temporary storage of storm water, and the range and spatial distribution of water depths and velocities in...

This model archive summary (MAS) document and model calibration dataset describes a surrogate model used to compute suspended sediment concentrations at USGS streamgage 11509500 for water years 2019-2024. The methods used follow USGS guidance as referenced in Office of Surface Water (OSW)/Office of Water Quality (OWQ) technical memoranda 2016.07 (https://water.usgs.gov/osw/pubs/memo...

This data release contains a dataset of continuous in-situ water temperature records from multiple federal, state, local agencies, non-profit organizations, and private industry partners across 788 locations within the Willamette River Basin (WRB) from years 2011 to 2024. This dataset complements and extends the existing multi-agency NorWeST water temperature dataset for the Willamette...

This metadata record describes a series of datasets containing metrics used to characterize drought for groundwater wells in the conterminous United States (CONUS). This data is associated with a publication that looks to answer questions about groundwater drought in CONUS. The publication uses the time periods 1981-2020 and 2001-2020, but this dataset includes additional time periods...