C.B. Adkins J.R. Bartolino 20120814 raster image Scientific Investigations Report 2012-5053 Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir12-5053_SedThick James R. Bartolino and Candice B. Adkins 20120101 Scientific Investigations Report 2012–5053 Prepared in cooperation with Blaine County, City of Hailey, City of Ketchum, The Nature Conservancy, City of Sun Valley, Sun Valley Water and Sewer District, Blaine Soil Conservation District, and City of Bellevue http://pubs.usgs.gov/sir/2012/5053/ This dataset is the estimated thickness of Quaternary sediment of the Wood River Valley aquifer system. This isopach map was constructed by subtracting the estimated altitude of the consolidated rock surface underlying Quaternary sediments surface (sir12-5053_BRsurf) from the altitude of land surface obtained from the 2009 1-Arc Second National Elevation Dataset as described in the "Process Step" section below. This dataset was created in support of the third phase of a continuing U.S. Geological Survey (USGS) study to assess the groundwater resources of the Wood River Valley, south-central Idaho. The first phase was documented in "Water-resource trends and comparisons between partial development and October 2006 hydrologic conditions, Wood River Valley, south-central Idaho" (Skinner and others, 2007), and the second phase was documented in "Ground-water budgets for the Wood River Valley aquifer system, south-central Idaho"(Bartolino, 2009). The third phase is a description of the hydrogeologic framework of the Wood River Valley aquifer system. The Wood River Valley contains most of the population of Blaine County and the cities of Sun Valley, Ketchum, Hailey, and Bellevue. This mountain valley is underlain by the alluvial Wood River Valley aquifer system. The entire population of the area depends on groundwater for domestic supply and rapid population growth since the 1970s has caused concern about the long-term sustainability of the groundwater resource. This dataset was created to support hydrogeologic investigations in the Wood River Valley, Idaho. While the dataset was created in support of a hydrogeologic framework of the Wood River Valley aquifer system (SIR-2012-5053), the intended uses of this dataset include, but are not limited to, natural resource modeling, mapping, and visualization applications. 20120411 Publication date Complete None planned -114.586717 -114.047675 43.80769 43.297004 None groundwater hydrogeology aquifers ISO 19115 Topic Categories geoscientificInformation inlandWaters environment Geographic Names Information System Silver Creek Blaine County Idaho Wood River Valley Ketchum Hailey Bellevue Picabo Gannett Sun Valley Big Wood River Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. See access and use constraints information. The dataset contains areas with sediment thicknesses values of less than one within the Wood River Valley boundary and which appear as holes or gaps in the dataset. US Geological Survey, Idaho Water Science Center James R. Bartolino Hydrologist (Geo) mailing

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Boise ID 83702 US (208) 387-1392 (208) 387-1372 jrbartol@usgs.gov 8:00am-4:30pm MST Please contact through email http://water.usgs.gov/GIS/browse/sir12-5053_SedThick.pdf Illustration of dataset pdf U.S. Geological Survey in cooperation with with Blaine County, City of Hailey, City of Ketchum, The Nature Conservancy, City of Sun Valley, Sun Valley Water and Sewer District, Blaine Soil Conservation District, and City of Bellevue. Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.4.4000 Only software generated attributes are present. All attempts were made to verify 100 percent of the digital attribute data is complete and consistent. Verification was done by interactive on-screen review. The estimated thickness of Quaternary sediment was visually evaluated and reviewed to be hydrologically consistent and correct. Complete. U.S. Geological Survey 20120411 raster digital data http://water.usgs.gov/lookup/getspatial?sir12-5053_BRsurf onLine 20120411 20120411 Publication date WRVAS Bedrock Surface Altitude of bedrock surface U.S. Geological Survey 20120411 vector digital data http://water.usgs.gov/lookup/getspatial?sir12-5053_AqfExt onLine 20120411 20120411 Publication date WRVAS boundary Spatial boundary limits U.S. Geological Survey 20090101 raster digital data http://nationalmap.gov/viewer.html None 20090101 20090101 Publication date 10-m DEM attribute information 1) The ESRI ArcMap 10 "Raster Calculator" tool was used to subtract the estimated altitude of the bedrock surface (sir12-5053_BRsurf) from the 10-m DEM (2009 1-Arc Second National Elevation Dataset) using standard settings and a 0.000278 decimal degrees (1 arc second or 30 m) cell size. 2) The resulting sediment thickness raster was then clipped with the Boundary of the Wood River Valley aquifer system shapefile (sir12-5053_AqfExt) using the ESRI ArcMap 10 "Clip" tool. 3) The clipped raster was converted from floating point to integer with the ESRI ArcMap 10 "Int" tool. U.S. Geological Survey unknown Raster Pixel 1837 1939 8.9831528411952133e-009 8.9831528411952133e-009 Decimal Degrees D North American 1983 GRS 1980 6378137.0 298.257222101 sir12-5053_SedThk.tif.vat Estimated thickness of Quaternary sediment, in feet. Range 1 - 346 ft. User defined VALUE Sediment thickness, in feet. ESRI Sequential unique whole numbers that are automatically generated. COUNT Number of raster cells with the given VALUE. ESRI Sequential unique whole numbers that are automatically generated. OID Object ID--Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. U.S. Geological Survey Ask USGS – Water Webserver Team mailing

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir12-5053_SedThick See access and use constraints information. TIFF raster image PKZIP compression Winzip http://water.usgs.gov/GIS/dsdl/sir12-5053_SedThick.zip None. This dataset is provided by USGS as a public service. 20120801 U.S. Geological Survey Ask USGS – Water Webserver Team mailing

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time