{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Susan G. Buto", "hasEmail": "mailto:sbuto@usgs.gov"}, "description": "This dataset was created in support of a study focusing on ground-water resources in the Great Basin \ncarbonate and alluvial aquifer system (GBCAAS). The GBCAAS is a complex aquifer system comprised \nof both unconsolidated and bedrock formations covering an area of approximately 110,000 square miles. \nThe aquifer system is situated in the eastern portion of the Great Basin Province of the western United \nStates. The eastern Great Basin is experiencing rapid population growth and has some of the highest \nper capita water use in the Nation. These factors, combined with the arid setting, have levied intensive \ndemand upon current ground-water resources and, thus, predictions of future shortages. Because of the \nlarge regional extent of the aquifer system, rapid growth in the region, and the reliance upon ground \nwater for urban populations, agriculture, and native habitats, the GBCAAS was selected by the U.S. \nGeological Survey (USGS) Water Resources program as part of the National Water Census Initiative \nto evaluate the Nation's ground-water availability.\n\t\t\nThese data are derived from the Basin Characterization Model (BCM). The BCM is a distributed-parameter, \nwater-balance accounting model that is run on a monthly time step. The BCM incorporates spatially \ndistributed parameters (monthly precipitation, monthly minimum and maximum air temperature, monthly \npotential evapotranspiration, soil-water storage capacity, and saturated hydraulic conductivity of bedrock \nand alluvium) to determine where excess water is available in a basin and whether the excess water is \nstored in the soil or infiltrates downward into underlying bedrock.\n\t\t\nThis dataset is composed of three raster layers. Two of the layers are outputs of the BCM model, one \nis an input. The layers are as follows:\n\t\t\n1. Estimated average in-place recharge for the years 1940 to 2006 in the GBCAAS study area. In-place\nrecharge is output from the BCM and is calculated as the annual mean amount of water that can drain \nfrom the soil zone directly into consolidated bedrock or unconsolidated deposits.\n\t\t\n2. Estimated average runoff for the years 1940 to 2006 in the GBCAAS study area. Estimated runoff \nis output from the BCM and is calculated as the annual mean amount of water that runs off the mountain \nfront or becomes streamflow.\n\t\t\n3. Estimated saturated hydraulic conductivity (K) of bedrock and unconsolidated basin fill in the GBCAAS \nstudy area. The data are input to the BCM model as one of two temporally invariable inputs: storage \ncapacity of soil and saturated hydraulic conductivity (Flint and Flint, 2007). The dataset was developed \nby applying assumed K values to geologic formations derived from 1:500,000-scale and 1:750,000-scale \ndigital State geologic maps covering the study area. Hydraulic conductivity estimates of bedrock are \nuncertain because of the unknown hydraulic properties and spatial distributions of fractures, faults, \nfault gouge, and shallow infilling materials associated with different bedrock types and evaporative \ndemand.\n\t\t\nThese data are output from a model and should be used with caution. Refer to the larger work citation \nfor details about the data and adjustments made to estimated recharge and runoff in water balance \ncalculations made for the GBCAAS study.\n\t\t\nReferences cited:\nFlint, A.L., and Flint, L.E., 2007, Application of the Basin Characterization Model to estimate in-place \nrecharge and runoff potential in the Basin and Range carbonate-rock aquifer system, White Pine County, \nNevada and adjacent areas in Nevada and Utah: U.S. Geological Survey Scientific Investigations Report \n2007-5099, 30p.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9UAYLIX", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.27ed94d8-bb3c-4de8-bd34-7cd88fd375c3.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_27ed94d8-bb3c-4de8-bd34-7cd88fd375c3", "keyword": ["California", "Great Basin", "Groundwater", "Groundwater recharge", "Hydrologic runoff", "Hydrologic water balance", "Idaho", "In-place recharge", "Nevada", "Saturated hydraulic conductivity", "USGS:27ed94d8-bb3c-4de8-bd34-7cd88fd375c3", "Utah", "geoscientificInformation", "inlandWaters"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-118.647225, 35.168005, -110.972686, 42.561624", "theme": ["geospatial"], "title": "Selected Basin Characterization Model Parameters for the Great Basin Carbonate and Alluvial Aquifer System of Nevada, Utah, and Parts of Adjacent States"}