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Cyanotoxin concentrations in extracts from cyanobacteria colonies, plankton net tows, and Solid Phase Adsorption Toxin Tracking (SPATT) samplers in western rivers, lakes, and reservoirs, including drinking water sources in the Oregon Cascades: 2016-2020 This data release contains cyanotoxin concentrations for microcystins, cylindrospermopsins, anatoxins, and saxitoxins assessed using Enzyme-Linked Immunosorbent Assays (ELISA) on 363 samples collected from 82 surface-water sites located in the Cascade Range in Oregon, and eight sites located outside of the Oregon Cascade Range in Washington and California, during 2016-2020. Three sample types were assessed: 1) benthic colonies and mats of cyanobacteria (n=109), 2) plankton net tows (n=90), and 3) Solid Phase Adsorption Toxin Tracking samplers (SPATTs)(n=164). Categories: Data; Tags: Anderson Lake, Aquatic Biology, California, Clackamas River, Coast Fork Willamette River, All tags... Columbia River, Deschutes River, ELISA, McKenzie River, Middle Fork Willamette River, North Santiam River, North Umpqua River, Oregon, SPATT, Sacramento River, Solid Phase Adsorption Toxin Tracking, Tualatin River, USGS Science Data Catalog (SDC), Washington, Water Quality, Willamette River, aquatic biology, benthos, biota, cyanobacteria, cyanotoxin, environment, inlandWaters, limnology, net tow, surface water quality, water sampling, Fewer tags Absorbance and fluorescence measurements and concentrations of disinfection by-products in source water and finished water in the McKenzie River Basin, Oregon: 2012-2014 This data release contains the results from a study that characterized the concentration and quality of dissolved organic carbon (DOC) in the McKenzie River, a relatively pristine watershed in western Oregon, and its link to forming disinfection by-products (DBPs) in treated drinking water. The study aimed to identify the primary source(s) of DOC in source water for the Eugene Water and Electric Board’s (EWEB) conventional treatment plant on the McKenzie River near river mile 11, upstream of Hayden Bridge. The two classes of regulated compounds examined—trihalomethanes (THMs) and haloacetic acids (HAAs)—form when organic carbon in raw source water reacts with chlorine and (or) bromine during water treatment. The... Categories: Data; Tags: McKenzie River, Oregon, USGS Science Data Catalog (SDC), Water Quality, Water Resources, All tags... disinfection by-products, dissolved organic carbon, environment, inlandWaters, optical properties of water, raw absorbance, river systems, surface water quality, Fewer tags Water quality measurements in off-channel water bodies of the Willamette River near Albany and Keizer, OR (2017 and 2019) The tabular data sets and associated maps in this data release represent water-quality data that were collected between April and November of 2017 and between July and November of 2019 to describe baseline conditions prior to or sometimes following treatments using herbicides or other methods to reduce the biomass of non-native water primrose (Ludwigia) within off-channel water bodies of the Willamette River near Albany and Keizer, Oregon. The water-quality parameters measured in this study included water temperature, specific conductance, pH, dissolved oxygen, turbidity, total chlorophyll, phycocyanin (blue-green algae pigment), and fluorescing dissolved organic matter in surface water. Categories: Data; Tags: Albany, Benton County, Keizer, Linn County, USGS Science Data Catalog (SDC), All tags... Water Quality, Western Oregon, Willamette Mission State Park, Willamette River, algae, environment, inlandWaters, oxygen content (water), water pH, water quality, water temperature, Fewer tags