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Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (3) Types Downloadable (3) Map Service (3) OGC WFS Layer (3) OGC WMS Layer (3) Contacts Nevada Water Science Center Carl J Legleiter Jeffrey R Kennedy U.S. Geological Survey - ScienceBase U.S. Geological Survey Toby L Welborn Office of the Rocky Mountain Regional Director Categories Data (3) Tag Types Place (3) Theme (3) Harvest Set (3) USGS Scientific Topic Keyword (2) Tag Schemes Geographic Names Information System (GNIS) (2) None (1) ISO 19115 Topic Category (1) USGS Thesaurus (2) View Results as: JSON ATOM CSV

Gravity Change from 2014 to 2015, Sierra Vista Subwatershed, Upper San Pedro Basin, Arizona Relative-gravity data and absolute-gravity data were collected in the Sierra Vista Subwatershed, Upper San Pedro Basin, Arizona, in May–June 2014 and 2015. Data from 2014 and a description of the survey network were published in USGS Open-File Report 2015–1086. Data presented in the shapefile here are the following: (1) Network-adjusted values from 2015, (2) Gravity change from 2014 to 2015, and (3) Survey-grade coordinates obtained from a Global Positioning System (GPS) survey in 2015. 2015 data and network adjustment results are presented in Kennedy, J.R., 2016, Gravity change from 2014 to 2015, Sierra Vista Subwatershed, Upper San Pedro Basin, Arizona: U.S. Geological Survey Open–File Report 2016–1155, 15... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Arizona Water Science Center, Botany, Geophysics, Hydrology, San Pedro Basin, All tags... Sierra Vista, AZ, Southwest Gravity Program, USGS Science Data Catalog (SDC), gravity, groundwater, hydrogeophysics, Fewer tags Irrigated Acreage Delineated from Landsat-Derived Maximum Normalized Difference Vegetation Index (NDVI) 1975-2010, Walker River Basin Nevada and California These data represent the extent and spatial distribution of irrigated acreage delineated from maximum Normalized Difference Vegetation Index (NDVI) derived from Landsat scenes in the Walker River Basin, California and Nevada, at five-year intervals from 1975-2010. The field boundaries in this data set are digitized from one-year composite maximum NDVI data derived from atmospherically corrected Landsat 2 Multispectral Scanner (MSS), Landsat 5 MSS, and Landsat 5 Thematic Mapper (TM) scenes. NDVI was calculated from the corrected reflectance data for each selected scene during the growing season (May through early October) and a single, composite image of maximum NDVI values was derived for each 5-year interval. Selecting... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Antelope Valley, Bridgeport Reservoir, California, Douglas County, East Walker Area, All tags... Lyon County, Mason Valley, Mineral County, Mono County, Nevada, Smith Valley, Topaz Lake, USGS Science Data Catalog (SDC), United States of America, Walker Lake, Walker Lake Valley, Walker River, Walker River Basin, Water Resources, Weber Reservoir, farming, geoscientificInformation, inlandWaters, Fewer tags Field spectra from the Niobrara River, Nebraska, August 15-18, 2016 The U.S. Geological Survey collected field spectra collected from the Niobrara River in Nebraska August 15–18, 2016, to support research on remote sensing of river discharge. Reflectance measurements were made by wading the Niobrara River near Norden Notch using an Analytical Spectral Devices FieldSpec3 spectroradiometer operated in reflectance mode. The original *.asd files are provided in this data release. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Nebraska, Niobrara River, USGS Science Data Catalog (SDC), bathymetry, depth, All tags... field spectra, reflectance, river, Fewer tags