Elise E. Wright, Valerie A. L. Bright, Robert W. Black, and Alexander O. Headman 20231116 Index of vulnerability for elevated nitrates in groundwater in the Puget Sound Basin, Washington, 2000–2019 tabular digital data and raster digital data Reston, VA U.S. Geological Survey Suggested citation: Wright, E.E., Bright, V., Headman, A., and Black, R.W., 2022, Index of vulnerability for elevated nitrates in groundwater in the Puget Sound Basin, Washington, 2000–2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9TOWGYM. https://doi.org/10.5066/P9TOWGYM Robert W. Black, Elise E. Wright, Valerie A. L. Bright, and Alexander O. Headman 2023 Prediction of the probability of elevated nitrate concentrations at groundwater depths used for drinking-water supply in the Puget Sound basin, Washington, 2004–19 publication https://doi.org/10.3133/sir20235117 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." These data were collected for the study titled "Index of Vulnerability for Elevated Nitrates in Groundwater in the Puget Sound, Washington." This study used logistic regression to identify groundwater vulnerability to elevated nitrate concentrations in the Puget Sound basin, Washington for the time periods 2000-2004, 2005-2009, 2010-2014, and 2015-2019. 20000101 20191231 ground condition Complete None planned -124.8370 -120.6466 49.0175 46.5796 ISO 19115 Topic Category environment health None Groundwater Wells Drinking Water USGS Metadata Identifier USGS:620fe06ed34e6c7e83baae63 None Puget Sound Washington None. None. Users are advised to read the dataset's metadata and the companion publication thoroughly to understand appropriate use and data limitations. Elise E. Wright U.S. Geological Survey, NW-PACIFIC ISLAND REGION Hydrologist mailing and physical
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Tacoma WA 98402 USA 253-552-1672 253-552-1581 eewright@usgs.gov This project was completed in cooperation with the Puget Sound Partnership. Existing data from Group A wells from the Washington State Department of Health Sentry database were used to develop a groundwater vulnerability logistic regression model. This work was completed using a Windows operating system with ArcGIS Pro, Microsoft Excel, and R. No formal accuracy tests were conducted. No formal accuracy tests were conducted. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal accuracy tests were conducted. No formal accuracy tests were conducted. Each component of this data release has its own processing steps that are described in their individual metadata files. 2021 Elise E. Wright U.S.Geological Survey, NW-PACIFIC ISLAND REGION Hydrologist mailing
934 Broadway
Tacoma WA 98402 USA 253-552-1672 253-552-1581 eewright@usgs.gov Universal Transverse Mercator 10 0.9996 -123.0 0.0 500000.0 0.0 coordinate pair 0.6096 0.6096 meters North_American_Datum_1983 GRS_1980 6378137.0 298.257222101 GS ScienceBase U.S. Geological Survey mailing address
Denver Federal Center, Building 810, Mail Stop 302
Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P9TOWGYM None 20240102 Elise E. Wright U.S. Geological Survey, NW-PACIFIC ISLAND REGION Hydrologist mailing
934 Broadway
Tacoma WA 98402 USA 253-552-1672 253-552-1581 eewright@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998