Robert W Black

This data release consists of the initial well input data for the logistic regression model, the conceptual well data for logistic mapping, the logistic mapping output data, the logistic mapping output vulnerability and vulnerability difference rasters, and supporting geographic information system (GIS) files for the study titled "Index of Vulnerability for Elevated Nitrates in Groundwater in the Puget Sound, Washington."

Tags: Drinking Water, Groundwater, Puget Sound, USGS Science Data Catalog (SDC), Washington, All tags... Water Quality, Wells, environment, health, Fewer tags

Data for Turbidity, Discharge, and Suspended-Sediment Concentrations and Loads, Duwamish River, Tukwila, Washington

This data release includes turbidity, discharge, suspended-sediment concentration (SSC) and particle-size data that were collected by the U.S. Geological Survey (USGS) between February 2013 and January 2017 at the Duwamish River, Washington, within the tidal influence at river kilometer 16.7 (USGS site 12113390; Duwamish River at Golf Course at Tukwila, WA). Additionally included in this release are the regression model archive summaries (MAS) that were developed between SSC and turbidity as well as SSC and discharge to estimate 15-minute SSC. Suspended-sediment loads were calculated from the computed SSC and time-series discharge data for every 15-minute interval during the study period.

Categories: Data; Tags: Duwamish River, Suspended-Sediment, Tukwila, WA, Turbidity, USGS Science Data Catalog (SDC), All tags... Water Quality, Water Resources, biota, Fewer tags

The objective of this study was to determine why certain stream insects tend to be found in certain temperature ranges. Many federal, state and local agencies use stream insects to monitor the health of freshwater ecosystems. While the temperature ranges for some insects are often inferred from the temperature of the waters where they were collected, this inference is coarse at best and problematic at worst. Stream temperatures fluctuate a lot during the year and temperature may or may not control where an insect lives. Field insects were collected and sent to a laboratory for testing several temperature endpoints, particularly at higher temperatures. Respiration, breathing rate, and some physical activities were...

Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2011, CASC, Climate Change, Completed, Macroinvertebrates, All tags... Northwest, Northwest, Northwest, Northwest CASC, Other Wildlife, Other Wildlife, Projects by Region, Rivers, Streams and Lakes, Rivers, Streams and Lakes, Temperature, Water, Coasts and Ice, Water, Coasts and Ice, Wildlife and Plants, Wildlife and Plants, vulnerability assessment, Fewer tags

A Baseline Assessment of Contaminant Concentrations in Sediment and Biota in Proximity to Coal Transport Tracks in the Pacific Northwest (2014)

This dataset provides baseline concentrations (from 2014) of polycyclic aromatic hydrocarbon (PAH), other aromatic organic compounds, mercury (Hg), and trace metal concentrations in sediment and biota collected from two sites along an existing rail line used for coal transport in the Columbia River Gorge, Washington. For this study, aquatic surface sediments, aquatic insects, and juvenile fish were collected in 2014 from Horsethief Lake in Columbia Hills State Park and Steigerwald Lake National Wildlife Refuge (NWR), both located in close proximity to the rail line and within the Columbia River Gorge National Scenic Area. Samples were collected from two subsites in each area: one closer to the rail line and one...

Categories: Data; Tags: Aquatic Biology, Environmental Health, USGS Science Data Catalog (SDC), Water Quality, contamination and pollution, All tags... fish, food web, freshwater ecosystems, human impacts, water resources, Fewer tags

Empirical Analysis for Identification and Laboratory Validation of Temperature Tolerance for Macroinvertebrates, 2013

These files contain all of the source USGS/EPA taxa, temperature, and percent abundance of urban and agricultural land cover within the watershed upstream of the sampling site data used to calculate taxa specific macroinvertebrate optimal temperatures and tolerances. They also contain a taxa specific list of temperature optima and tolerances generated from the data contained in source USGS/EPA data.

Categories: Data; Tags: Northwest CASC, Other Wildlife, Rivers, Streams and Lakes, Vulnerability, Vulnerability Assessment, All tags... Washington, Oregon, California, Idaho, Wyoming, Montana, Utah, Colorado, Nevada, Water, Coasts and Ice, Wildlife and Plants, climate change, climate change, temperature, macroinvertebrates, vulnerability assessment, macroinvertebrates, temperature, Fewer tags