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Sediment-quality and water-toxicity data from 10 sites on the Westside Creeks and San Antonio River, San Antonio, Texas, 2014 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). Categories: Data; Tags: Alazán Creek, Apache Creek, Bexar County, Brominated flame retardants, Fathead minnow, All tags... Halogenated organic compounds, Martínez Creek, PAH, PCB, Pesticides, Pimephales promelas, Polychlorinated biphenyls, Polycyclic aromatic hydrocarbons, San Antonio, San Antonio River, San Pedro Creek, Sediment-quality, Texas, Trace elements, USA, USGS Science Data Catalog (SDC), USGS Station ID 08178100, USGS Station ID 08178310, USGS Station ID 08178345, USGS Station ID 08178375, USGS Station ID 08178410, USGS Station ID 08178445, USGS Station ID 08178460, USGS Station ID 08178465, USGS Station ID 08178504, USGS Station ID 08178515, United States, Water Quality, Water-toxicity, Westside Creeks, Fewer tags Ground control points obtained by using uncrewed aerial systems from an erosion prone area north of Medina River Natural Area near San Antonio, Texas, August 14, 2019, and July 8, 2022 This data release includes ground control points (GCPs) collected during two uncrewed aerial system (UAS) imagery surveys conducted at an edge-of-field site north of Medina River Natural Area near San Antonio, Texas, on August 14, 2019, and July 8, 2022. Ten GCPs were used on each survey date, and a total of twenty GCPs are described in this data release. Categories: Data; Tags: Bexar County, Medina River, Medina River Natural Area, San Antonio, Texas, All tags... U.S. Geological Survey, UAS, USGS, elevation, erosion, geolocation measurement, georeferencing, geoscientificInformation, ground control points, imageryBaseMapsEarthCover, inlandWaters, location, uncrewed aerial systems, Fewer tags Orthomosaic images obtained by using uncrewed aerial systems from an erosion prone area north of Medina River Natural Area near San Antonio, Texas, August 14, 2019, and July 8, 2022 This data release includes two digital orthomosaic images produced from uncrewed aerial system (UAS) imagery surveys conducted on August 14, 2019, and July 8, 2022 at an edge-of-field site north of Medina River Natural Area near San Antonio, Texas. These images were compiled from sets of aerial imagery included in this data release. Orthomosaic images can be used for visual reference but do not contain elevation data. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 3DR Solo, Bexar County, Medina Natural Area, Medina River, San Antonio, All tags... Texas, U.S. Geological Survey, UAS, USGS, aerial imagery, aerial photography, erosion, georeferencing, geoscientificInformation, image collections, imageryBaseMapsEarthCover, inlandWaters, location, low-altitude aerial imagery, remote sensing, Fewer tags Water-Quality Data Characterizing the San Antonio Segment of the Edwards Aquifer With an Emphasis on Processes Influencing Nutrient and Pesticide Concentrations and Factors Affecting Aquifer Vulnerability, 2010-2016 This data release documents water-quality data collected from April 2010 through December 2016 by the U.S. Geological Survey in cooperation with the San Antonio Water System from across the San Antonio segment of the Edwards aquifer with particular emphasis on nutrients and pesticides. Additional data regarding inorganic compounds and selected stable isotopes were obtained to provide a geochemical framework for characterizing source inputs and observed chemical changes during periods of hydrologic transition. Water-quality data were collected from surface-water and groundwater sites representing rural and urban land cover types. Data were obtained from unconfined wells in the recharge zone to characterize the rapid... Categories: Data; Tags: Bexar County, Comal County, Comal Springs, Culebra Creek, Frio River, All tags... Helotes Creek, Kinney County, Medina County, Nueces River, Sabinal River, San Antonio, Seco Creek, USGS Science Data Catalog (SDC), USGS Station ID 08168710, USGS Station ID 08180941, USGS Station ID 08181400, USGS Station ID 08192000, USGS Station ID 08195000, USGS Station ID 08198000, USGS Station ID 08202600, Uvalde County, aquifer vulnerability, continuous monitoring, deuterium isotopic analysis, nitrate sources, nitrogen isotopic analysis, nutrients, oxygen isotopic analysis, pesticides, strontium isotopic analysis, water chemistry, water-quality sampling, Fewer tags Digital surface models (DSMs) obtained by using uncrewed aerial systems from an erosion prone area north of Medina River Natural Area near San Antonio, Texas, August 14, 2019, and July 8, 2022 Data included in this release are two digital surface models (DSMs) obtained by using uncrewed aerial system (UAS) surveys conducted on August 14, 2019, and July 8, 2022, at an edge-of-field site north of the Medina River Natural Area near San Antonio, Texas. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 3DR Solo, Bexar County, Medina River, Medina River Natural Area, San Antonio, All tags... Texas, U.S. Geological Survey, USGS, aerial imagery, digital elevation models, erosion, georeferencing, geoscientificInformation, imageryBaseMapsEarthCover, inlandWaters, location, low-altitude aerial imagery, remote sensing, structure from motion, Fewer tags Continuous monitoring and discrete water-quality data from groundwater wells in the Edwards aquifer, Texas, 2014–15 In cooperation with the San Antonio Water System, continuous and discrete water-quality data were collected from groundwater wells completed in the Edwards aquifer, Texas, 2014-2015. Discrete measurements of nitrate were made by using a nitrate sensor. Precipitation data from two sites in the National Oceanic and Atmospheric Administration Global Historical Climatology Network are included in the dataset. The continuous monitoring data were collected using water quality sensors and include hourly measurements of nitrate, specific conductance, and water level in two wells. Discrete measurements of nitrate, specific conductance, and vertical flow rate were collected from one well site at different depths throughout... Categories: Data; Tags: Bexar County, Comal County, Edwards Aquifer, Environmental Health, Geochemistry, All tags... Groundwater, Groundwater recharge, Karst, Medina County, Nitrate, Optical nitrate sensors, San Antonio, Specific conductance, Texas, USA, USGS Science Data Catalog (SDC), Uvalde county, Water Resources, Fewer tags