Filters: Tags: Coastal Mountains ecoregion (X) > partyWithName: Peter C VanMetre (X) > partyWithName: U.S. Geological Survey - ScienceBase (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) OGC WMS Service (2) Contacts Jennifer L Morace Lisa H Nowell Daniel T Button Oregon Water Science Center U.S. Geological Survey More... Tag Types Place (2) Theme (2) USGS Scientific Topic Keyword (2) Harvest Set (2) Tag Schemes Oregon GEO Place Keywords (2) USGS Thesaurus (2) View Results as: JSON ATOM CSV

Dissolved Pesticides in Weekly Water Samples from the NAWQA Regional Stream Quality Assessments (2013-2017) Dissolved pesticides were measured in weekly water samples from 482 wadeable streams in five regions of the United States during 2013-2017, as part of the U.S. Geological Survey's (USGS) Regional Stream Quality Assessment (RSQA). One study was conducted each year, starting with the Midwest (2013), followed by the Southeast Piedmont (2014), Pacific Northwest (2015), Northeast (2016), and Central California Coast (2017). Within each region, 77-100 streams were sampled over 6-14 weeks, followed by ecological surveys of fish, invertebrate and fish communities. The first study (Midwest) is an agricultural-gradient study, where the majority of sites were located along a gradient from undeveloped to 100% agricultural land... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, California, Central California Foothills ecoregion, Coastal Mountains ecoregion, Connecticut, All tags... Corn Belt, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Massachusetts, Midwest, Minnesota, Missouri, NAWQA, National Water Quality Assessment, Nebraska, New Hampshire, New York, North Carolina, Northeast, Ohio, Pacific Northwest, Pennsylvania, Piedmont ecoregion, Puget lowlands ecoregion, Rhode Island, South Carolina, South Dakota, Southeast, Tennessee, USGS Science Data Catalog (SDC), United States, Vermont, Virginia, Water Quality, Water Resources, Willamette Valley, Wisconsin, fungicide, herbicide, insecticide, mixtures, pesticide, pesticide degradate, southern Appalachian Mountains, stream, surface water, surface water, water quality, Fewer tags Dissolved Pesticides in Weekly Water Samples from the NAWQA California Stream Quality Assessment (2017) 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 (5–100% urban land in the lower basin), 9 agricultural sites, 24 mixed land-use sites, and 12 undeveloped sites. Water samples were filtered (0.7 micrometers) and analyzed for 253 pesticide compounds by direct-injection liquid chromatography with tandem mass-spectrometry (LC-MS/MS). Two similar LC-MS/MS methods were used: a broad-spectrum (223... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Central California Foothills ecoregion, Central Coastal California, Coastal Mountains ecoregion, NAWQA, All tags... National Water Quality Assessment, USGS Science Data Catalog (SDC), United States, Water Quality, diamide, fungicide, herbicide, insecticide, mixtures, neonicotinoid, pesticide, pesticide degradate, stream, surface water, surface water, water quality, Fewer tags