Nutrients and Major-Ions Measured in Water-Quality Samples Collected from Four North Texas Reservoirs (ver. 3.0, September 2021)

In cooperation with Dallas Water Utilities (DWU), the U.S. Geological Survey (USGS) measures nutrient and major-ion concentrations in selected reservoirs in north Texas. This data release documents water-quality data obtained from Ray Hubbard Lake, Grapevine Lake, Ray Roberts Lake, and Lake Lewisville during water years 2016-20. In addition to nutrient and major-ion concentrations, water-quality field properties and other selected constituents measured in the water-quality samples collected from these reservoirs are documented. The study began in water year 2016 (WY16) with monthly sampling of Ray Hubbard Lake. A water year is defined as the 12-month period from October 1 through September 30 and is designated...

Categories: Data Release - Revised; Tags: Dallas, Dallas, Grapevine, Grapevine Lake, Lake Lewisville, All tags... Lewisville, Ray Hubbard Lake, Ray Roberts Lake, Texas, USGS Science Data Catalog (SDC), nutrient content (water), water quality, Fewer tags

USGS US Topo 7.5-minute map for Tunas, MO 2015

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Dallas, Downloadable Data, EarthCover, GeoPDF, All tags... Imagery and Base Maps, Map, Missouri, Public Land Survey System, Tunas, MO, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Garland, TX 2016

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Collin, Dallas, Downloadable Data, EarthCover, All tags... Garland, TX, GeoPDF, Imagery and Base Maps, Map, Public Land Survey System, Texas, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Charity, MO 2015

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Charity, MO, Dallas, Downloadable Data, EarthCover, All tags... GeoPDF, Imagery and Base Maps, Map, Missouri, Public Land Survey System, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Ouachita, AR 2017

Layered geospatial PDF Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Arkansas, Dallas, Downloadable Data, EarthCover, All tags... GeoPDF, Imagery and Base Maps, Map, Ouachita, Ouachita, AR, Public Land Survey System, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Princeton East, AR 2011

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Arkansas, Dallas, Downloadable Data, EarthCover, All tags... GeoPDF, Imagery and Base Maps, Map, Princeton East, AR, U.S. National Grid, US, US Topo, US Topo Historical, United States, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, Fewer tags

USGS US Topo 7.5-minute map for Rowlett, TX 2016

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Collin, Dallas, Downloadable Data, EarthCover, All tags... GeoPDF, Imagery and Base Maps, Map, Public Land Survey System, Rockwall, Rowlett, TX, Texas, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Adel, IA 2010

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Adel, IA, Dallas, Downloadable Data, EarthCover, All tags... GeoPDF, Imagery and Base Maps, Iowa, Madison, Map, U.S. National Grid, US, US Topo, US Topo Historical, United States, contour, geographic names, hydrography, orthoimage, topographic, transportation, Fewer tags

USGS US Topo 7.5-minute map for Britton, TX 2016

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Britton, TX, Dallas, Downloadable Data, EarthCover, All tags... Ellis, GeoPDF, Imagery and Base Maps, Johnson, Map, Public Land Survey System, Tarrant, Texas, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Browns, AL 2011

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Alabama, Browns, AL, Dallas, Downloadable Data, All tags... EarthCover, GeoPDF, Imagery and Base Maps, Map, Perry, U.S. National Grid, US, US Topo, US Topo Historical, United States, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, Fewer tags

USGS US Topo 7.5-minute map for Burnsville, AL 2014

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Alabama, Autauga, Burnsville, AL, Dallas, All tags... Downloadable Data, EarthCover, GeoPDF, Imagery and Base Maps, Map, Public Land Survey System, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Catherine, AL 2014

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Alabama, Catherine, AL, Dallas, Downloadable Data, All tags... EarthCover, GeoPDF, Imagery and Base Maps, Map, Public Land Survey System, U.S. National Grid, US, US Topo, US Topo Historical, United States, Wilcox, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Collirene, AL 2014

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Alabama, Collirene, AL, Dallas, Downloadable Data, All tags... EarthCover, GeoPDF, Imagery and Base Maps, Lowndes, Map, Public Land Survey System, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Crumptonia, AL 2011

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Alabama, Crumptonia, AL, Dallas, Downloadable Data, All tags... EarthCover, GeoPDF, Imagery and Base Maps, Map, U.S. National Grid, US, US Topo, US Topo Historical, United States, Wilcox, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, Fewer tags

USGS US Topo 7.5-minute map for Tates Bluff, AR 2011

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Arkansas, Clark, Dallas, Downloadable Data, All tags... EarthCover, GeoPDF, Imagery and Base Maps, Map, Ouachita, Tates Bluff, AR, U.S. National Grid, US, US Topo, US Topo Historical, United States, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, Fewer tags

USGS US Topo 7.5-minute map for Safford, AL 2014

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Alabama, Dallas, Downloadable Data, EarthCover, All tags... GeoPDF, Imagery and Base Maps, Map, Public Land Survey System, Safford, AL, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Central Mills, AL 2014

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Alabama, Central Mills, AL, Dallas, Downloadable Data, All tags... EarthCover, GeoPDF, Imagery and Base Maps, Map, Marengo, Perry, Public Land Survey System, U.S. National Grid, US, US Topo, US Topo Historical, United States, Wilcox, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Beach, MO 2015

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Beach, MO, Dallas, Downloadable Data, EarthCover, All tags... GeoPDF, Imagery and Base Maps, Map, Missouri, Public Land Survey System, U.S. National Grid, US, US Topo, US Topo Historical, United States, Webster, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Sparkman NW, AR 2014

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Arkansas, Clark, Dallas, Downloadable Data, All tags... EarthCover, GeoPDF, Imagery and Base Maps, Map, Public Land Survey System, Sparkman NW, AR, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags

USGS US Topo 7.5-minute map for Addison, TX 2012

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Tags: 7.5 x 7.5 minute, Addison, TX, Collin, Dallas, Denton, All tags... Downloadable Data, EarthCover, GeoPDF, Imagery and Base Maps, Map, Public Land Survey System, Texas, U.S. National Grid, US, US Topo, US Topo Historical, United States, boundary, contour, geographic names, hydrography, imageryBaseMapsEarthCover, orthoimage, structures, topographic, transportation, woodland, Fewer tags