Aquifer framework datasets used to represent the Southern Nevada volcanic-rock aquifers, Nevada

The Southern Nevada volcanic-rock aquifers reside in southern-central Nevada. This group of aquifers can be categorized into welded tuff, bedded tuff, and lava flow aquifers. Each of these categories possess different physical characteristics and have varying degrees of welding and number of interconnected joints. The lithology of these aquifers is primarily dependent on mode of eruption and cooling and are highly variable. Because the lithology is so variable, so is groundwater transmission, storage, and yield (HA 730-B). This product provides source data for the Southern Nevada volcanic-rock aquifers framework, including: Extent shapefiles: 1. p_57SRNVDV.shp: Polygon shapefile containing the areal extent of the Southern Nevada volcanic-rock aquifers (SRNVDV_AqExtent). The extent file contains no aquifer subunits. Altitude raster files: 1. ra_57SRNVDV_top.tif: Altitude raster dataset of the top of the Southern Nevada volcanic-rock aquifers. The altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88). This data was sourced from Sweetkind and others, 2011. 2. ra_57SRNVDV_bot.tif: Altitude raster dataset of the bottom of the Southern Nevada volcanic-rock aquifers. The altitude values are in meters reference to NAVD88. This data was sourced from Sweetkind and others, 2011. Depth raster files: 1. rd_57SRNVDV_top.tif: Depth raster dataset of the top of the Southern Nevada volcanic-rock aquifers. The depth values are in meters below land surface (NED, 100-meter). 2. rd_57SRNVDV_bot.tif: Depth raster dataset of the bottom of the Southern Nevada volcanic-rock aquifers. The depth values are in meters below land surface (NED, 100-meter).

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