Data

Model archive summary describing the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Columbia River at Vancouver site - USGS site ID# 14144700. The time series suspended sediment data will help determine the suspended sediment concentration at the site in...

This data release contains data sets that describe reach-scale water-quality conditions for the Pacific drainages of the United States. The nutrient and water use conditions represent the predictions from recent USGS SPARROW (Spatially Related Regression on Watershed Attributes) modeling as well as other watershed attributes. The SPARROW predictions and other watershed attributes were...

Continuous water-temperature data were collected at multiple sites along the Middle Fork and mainstem Willamette Rivers between Jasper and Newberg, Oregon, to support effectiveness monitoring for a large-scale channel and floodplain restoration program (Willamette Focused Investment Partnership, WFIP). Continuous water temperature loggers were deployed at a subset of WFIP restoration...

This U.S. Geological Survey (USGS) data release includes input and output tabular files associated with mean seasonal 2002 simulations of total nitrogen and total phosphorus loads of the northeastern United States. The mean seasonal (MS) simulations are performed using a dynamic configuration of the USGS's Spatially Referenced Regression On Watershed attributes (dynamicSPARROW-MS) model...

This U.S. Geological Survey (USGS) Data Release provides phytoplankton data from Upper Klamath Lake, OR from 5/11/2020 - 9/30/2020 from ten sites and zooplankton data from Upper Klamath Lake, OR from 5/11/2020 - 10/14/2020 from eight sites. Phytoplankton data are reported to the lowest possible taxonomic level and biovolume, biomass, and density are reported. Zooplankton data are...

This U.S. Geological Survey (USGS) Data Release provides phytoplankton data from Upper Klamath River, OR from 8/4/2016 - 9/10/2020 at USGS Station 11509370, Upper Klamath River abv. Keno Dam at Keno, OR. Phytoplankton data are reported to the lowest possible taxonomic level and biovolume, biomass, and density are reported.

Dissolved pesticides were measured in weekly water samples from 85 wadeable streams in Central Coastal California over a variable six-week period during March-May, 2017, as part of the California Stream Quality Assessment (CSQA) study conducted by the U.S. Geological Survey's (USGS) Regional Stream-Quality Assessment (RSQA) Project. The 85 streams consisted of 40 urban sites (5...

This data release contains the results from a comprehensive field study that applied paleoflood hydrology methods to estimate the frequency of low-probability floods for the Tennessee River near Chattanooga, Tennessee. The study combined stratigraphic records of large, previously unrecorded floods with modern systematic flood records and historical flood accounts.

This data release presents baseline datasets of phreatophytic groundwater-dependent ecosystem (GDE) locations in Oregon and trends in physical and environmental factors potentially influencing proximal groundwater supplies. The data release consists of three child items. The child items are: (1) Select Phreatophytic Shrub and Grass Species of Oregon, the Estimated Distribution of...

This dataset contains manually developed 5-, 10-, and 500-ft contours for the Harney Basin, Oregon aquifer system shallow and deep potentiometric-surface maps. The potentiometric-surfaces show altitude at the water-table surface (shallow) and at which the water level would have risen in tightly-cased wells deeper than 100 ft (deep) and generally represents synoptic conditions during...

This data release contains a boosted regression tree (BRT) model (written in the R programming language), and the input and output data from that model that were used to relate base flow nitrate concentrations in the Chesapeake Bay watershed to catchment characteristics. The input data consists of two types of information: 1) surface water nitrate concentrations collected by the USGS and...

The U.S. Geological Survey (USGS) Data Release provides phytoplankton data from eight sites located in Upper Klamath Lake, OR from 6/28/2010 to 9/19/2018. Phytoplankton data are reported to the lowest possible taxonomic level and biovolume, biomass, and density are reported.