Fred D Tillman 2015 Esri ASCII Raster Digital Data Set Reston, Virginia U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?ofr_2015_1160_awc_daymet_resolution Fred D Tillman 2015 Publication (Other) Open-File Report 2015-1160 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ofr20151160 awc_UCRB_Daymet_resolution.txt is an Esri ASCII grid representing the available water capacity (AWC) for the Upper Colorado River Basin. AWC (available water capacity) is the amount of water that a soil can hold, and is between a soil’s field capacity and the wilting point. In Soil-Water Balance (SWB) model recharge simulations, AWC is multiplied by root zone depth to define the maximum water capacity of a cell, and any soil-moisture exceeding this amount is converted to recharge. The awc_UCRB_Daymet_resolution.txt grid was developed as part of the investigation of changes in groundwater recharge in the Upper Colorado River Basin in response to potential climate change. This investigation uses the Soil-Water Balance model to estimate groundwater recharge. This project was supported by the USGS Groundwater Resources Program and the Bureau of Reclamation. The report documenting this and other datasets for the UCRB Soil-Water Balance recharge model is: Tillman, F.D, 2015, Documentation of input datasets for the soil-water balance groundwater recharge model of the Upper Colorado River Basin: U.S. Geological Survey Open-File Report 2015–1160, 17 p., https://doi.org/10.3133/ofr20151160. (USGS OFR 2015-1160) The control files, "UCRB_recharge_1950-99_MAURER.ctl", and "UCRB_recharge_1980-09_DAYMET.ctrl", plus the lookup table for landuse, "UCRB_LU_LOOKUP.txt" are included here as essential to completing the UCRB soils-water balance model. The control files are fully commented, and the lookup table is explained in great detail in the report, USGS OFR 2015-1160. They are located in a compressed file "ofr_2015_1160_ctl_lu_files.zip". 2015 publication date Complete None planned -113.920363928 -104.972961005 43.986766736 34.965779618 USGS Thesaurus inlandWaters groundwater groundwater recharge soil-water balance ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:6c6c47b9-f646-4884-b3ea-9aa857d49309 Geographic Names Information System Upper Colorado River Basin Arizona California Colorado Nevada New Mexico Utah Wyoming None. Please see 'Distribution Info' for details. None. Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations. U.S. Geological Survey, Southwest Region Fred D Tillman Research Hydrologist mailing address

520 North Park Avenue

Tucson AZ 85719 520-670-6671 x223 520-670-5592 ftillman@usgs.gov https://water.usgs.gov/GIS/browse/awc_daymet_resolution.jpg Map of available water capacity (awc) resampled to Daymet climate resolution JPG Support for the development of the Soil-Water Balance Groundwater Recharge Model of the Upper Colorado River Basin was provided by the USGS Groundwater Resources Program and the Bureau of Reclamation. Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1 (Build 4959) Service Pack N/A (Build N/A) The awc_UCRB_Daymet_resolution.txt ASCII grid combines information from gSSURGO (where available) and STATSGO2 datasets, which was then resampled to match the Daymet climate data resolution (1000m). Quality assurance was performed by project hydrologist by comparing resampled AWC dataset to original datasets. Data are complete. ASCII grid cellsize is 1000 meters. A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable. Natural Resources Conservation Service (NRCS) 2015 Raster Digital Data Set Washington D.C. US Department of Agriculture http://datagateway.nrcs.usda.gov/ Digital and/or Hardcopy Resources 2015 publication date gSSURGO gSSURGO geodatabase raster of Available Water Capacity for the Upper Colorado River Basin at 10 meter resolution Natural Resources Conservation Service (NRCS) 2015 Vector Digital Data Set Washington D.C. US Department of Agriculture http://datagateway.nrcs.usda.gov/ Digital and/or Hardcopy Resources 2015 publication date STATSGO2 STATSGO2 shapefile and tabular data for Available Water Capacity for the Upper Colorado River Basin Environmental Systems Research Institute, Inc. ("Esri") 2012 software Redlands, CA Esri http://www.esri.com/ computer program 2012 publication date Esri geographic information system processing scripts, including "Mosaic to New Raster," "Extract by Mask," "CON," "Project Raster," "FlowDirection," and "Reclass" Downloaded gSSURGO and STATSGO2 soil information for all five basin states from http://datagateway.nrcs.usda.gov/ 2015 The gSSURGO rasters were combined using the ArcGIS "mosaic to new raster" tool, and associated soil attribute tables were merged and joined to the combined raster. The combined gSSURGO raster was clipped to the UCRB study area using the ArcGIS "extract by mask" tool, and a separate Available Water Capacity raster was created using the ArcGIS Reclass tool. 2015 STATSGO2 data were merged into a single shapefile. Reports on Physical Soil Properties (for AWC) were run in Microsoft Access and exported to Microsoft Excel. In Excel, Visual Basic for Applications (VBA) scripts were written to compute the depth-weighted average of AWC values for each map unit. Depth-weighted AWC results were joined to the polygon shapefile and a raster was created using the ArcGIS "feature to raster" tool, using the same resolution as the gSSURGO data. 2015 A merged raster of gSSURGO and STATSGO2 information was created for the AWC dataset using the CON tool, whereby gSSURGO information was used where available and STATSGO2 information was used where gSSURGO was missing. 2015 The AWC grid was resampled to obtain the same cell size, cell alignment, and geographic projection as the Daymet climate dataset using the ArcGIS "project raster" tool with the cubic resampling technique, and the Daymet climate dataset raster to define the output cell size and "snap" raster. 2015 The final AWC raster was exported as an ASCII file. 2015 Raster Grid Cell 894 639 1 WGS 1984 Lambert Conformal Conic (ESRI Full Name: WGS_1984_Lambert_Conformal_Conic) 25.0 60.0 -100.0 42.5 0.0 0.0 row and column 1000.0 1000.0 m D_WGS_1984 WGS_1984 6378137.0 298.257223563 Attribute Table Table containing attribute information associated with the data set. Producer defined Value awc_UCRB_Daymet_resolution.txt is an Esri ASCII grid representing the available water capacity (AWC) for the Upper Colorado River Basin. AWC is the amount of water that a soil can hold, and is between a soil’s field capacity and the wilting point. In Soil-Water Balance model recharge simulations, AWC is multiplied by root zone depth to define the maximum water capacity of a cell, and any soil-moisture exceeding this amount is converted to recharge. U.S. Department of Agriculture, 1998, Soil Quality Resource Concerns, Available Water Capacity: Soil Quality Information Sheet, 2 p., available at http://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_051279.pdf. 0 4.9317998886108 in/ft awc_UCRB_Daymet_resolution.txt is an Esri ASCII text file of the grid representing the available water capacity (AWC) for the Upper Colorado River Basin. AWC is the amount of water that a soil can hold, and is between a soil’s field capacity and the wilting point. In Soil-Water Balance model recharge simulations, AWC is multiplied by root zone depth to define the maximum water capacity of a cell, and any soil-moisture exceeding this amount is converted to recharge. Tillman, F.D, 2015, Documentation of input datasets for the soil-water balance groundwater recharge model of the Upper Colorado River Basin: U.S. Geological Survey Open-File Report 2015–1160, 17 p., https://doi.org/10.3133/ofr20151160. U.S. Geological Survey Michael Ierardi IT Specialist mailing and physical

445 National Center

Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov Although these data have 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. 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 these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. ASCII file of raster raster data stored as a compressed ASCII text file. WinZip 1.214 https://water.usgs.gov/GIS/dsdl/ofr_2015_1160_awc_daymet_resolution.zip The control files, "UCRB_recharge_1950-99_MAURER.ctl", and "UCRB_recharge_1980-09_DAYMET.ctrl", plus the lookup table for landuse, "UCRB_LU_LOOKUP.txt" are included here as essential to completing the UCRB soils-water balance model. The control files are fully commented, and the lookup table is explained in great detail in the report, USGS OFR 2015-1160. They are located in a compressed file "ofr_2015_1160_ctl_lu_files.zip". WinZip 0.034 https://water.usgs.gov/GIS/dsdl/ofr_2015_1160_ctl_lu_files.zip None. This dataset is provided by USGS as a public service. 20201117 U.S. Geological Survey Michael Ierardi IT Specialist mailing and physical

445 National Center

Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998