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Sediment samples and samples for water-toxicity testing were collected during 2014 from several streams in San Antonio, Texas known locally as the Westside creeks (Alazán, Apache, Martínez, and San Pedro Creeks) and from the San Antonio River. Samples were collected once during base-flow and again after periods of storm-water runoff (post-storm conditions) to determine baseline sediment- and water-quality conditions. Streambed-sediment samples were analyzed for selected constituents, including trace elements and organic contaminants such as pesticides, polychlorinated biphenyls (PCBs), brominated flame retardants, and polycyclic aromatic hydrocarbons (PAHs).
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.


map background search result map search result map Sediment-quality and water-toxicity data from 10 sites on the Westside Creeks and San Antonio River, San Antonio, Texas, 2014 USGS Topo Map Vector Data (Vector) 6908 Camp Bullis TX (published 20220823) Shapefile USGS Topo Map Vector Data (Vector) 14181 Elmendorf TX (published 20220822) FileGDB USGS Topo Map Vector Data (Vector) 20051 Helotes TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 24219 La Coste TX (published 20220822) FileGDB USGS Topo Map Vector Data (Vector) 25400 Leming TX (published 20220822) Shapefile USGS Topo Map Vector Data (Vector) 27888 Martinez TX (published 20220823) Shapefile USGS Topo Map Vector Data (Vector) 71038 New Berlin TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 39623 San Geronimo TX (published 20220822) FileGDB USGS Topo Map Vector Data (Vector) 40179 Schertz TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 42348 Southton TX (published 20220822) FileGDB USGS US Topo 7.5-minute map for Culebra Hill, TX 2019 US Topo 7.5-minute map for Somerset, TX US Topo 7.5-minute map for Southton, TX USGS NED 1/3 arc-second Contours for San Antonio E, Texas 20220819 1 x 1 degree GeoPackage USGS Topo Map Vector Data (Vector) 42054 Somerset TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 24219 La Coste TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 22235 Jack Mountain TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 24186 La Vernia SW TX (published 20220823) GeoPackage USGS Topo Map Vector Data (Vector) 39278 Saint Hedwig TX (published 20220823) GeoPackage Sediment-quality and water-toxicity data from 10 sites on the Westside Creeks and San Antonio River, San Antonio, Texas, 2014 USGS Topo Map Vector Data (Vector) 6908 Camp Bullis TX (published 20220823) Shapefile USGS Topo Map Vector Data (Vector) 14181 Elmendorf TX (published 20220822) FileGDB USGS Topo Map Vector Data (Vector) 20051 Helotes TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 24219 La Coste TX (published 20220822) FileGDB USGS Topo Map Vector Data (Vector) 25400 Leming TX (published 20220822) Shapefile USGS Topo Map Vector Data (Vector) 27888 Martinez TX (published 20220823) Shapefile USGS Topo Map Vector Data (Vector) 71038 New Berlin TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 39623 San Geronimo TX (published 20220822) FileGDB USGS Topo Map Vector Data (Vector) 40179 Schertz TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 42348 Southton TX (published 20220822) FileGDB USGS US Topo 7.5-minute map for Culebra Hill, TX 2019 US Topo 7.5-minute map for Somerset, TX US Topo 7.5-minute map for Southton, TX USGS Topo Map Vector Data (Vector) 42054 Somerset TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 24219 La Coste TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 22235 Jack Mountain TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 24186 La Vernia SW TX (published 20220823) GeoPackage USGS Topo Map Vector Data (Vector) 39278 Saint Hedwig TX (published 20220823) GeoPackage USGS NED 1/3 arc-second Contours for San Antonio E, Texas 20220819 1 x 1 degree GeoPackage