Name: Watersheds-HUC12 - National Extent

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Description: Forests to Faucets 2.0 builds upon the national Forests to Faucets(2011) by updating base data and adding new threats including wildfire, invasive pests, and future stresses such as climate-induced changes in land use and water quantity.The purpose of this project is to quantify, rank, and illustrate the geographic connection between forests and other natural cover (private and public), surface drinking water supplies, and the populations that depend on them–the ecosystem service of water supply. The project assesses subwatersheds across the US to identify those important to downstream surface drinking water supplies as well as evaluate a subwatersheds natural ability to produce clean water based on its biophysical characteristics: percent natural cover, percent agricultural land, percent impervious, percent riparian natural cover, and mean annual water yield. Using data from a variety of existing sources and maps generated through GIS analyses, the project uses maps and statistics to describe the relative importance of private forests and National Forest System lands to surface drinking water supplies across the United States. The data produced by this assessment provides information needed to identify opportunities for water market approaches or schemes based upon payments for environmental services (PES). AttributeDescriptionSourcesHUC_1212-digit Hydrologic Unit CodeWBD 2009HU_12_NAME12-digit Hydrologic Unit NameWBD 2009SourceHUC Source (WASSI WBD OR WBD)CalculatedFrom_HUC 12 From for routingWBD 2009ToHUC 12 To for routingWBD 2009 (edited by USDA FS)LevelHUC levelCalculated HUC level from outlet (1) to headwater (351)NON_FORESTAcres of non-forestPADUS and NLCDPRIVATE_FORESTAcres of private forestPADUS and NLCDPROTECTED_FORESTAcres of protected forest (State, Local, NGO, Permanent Easement)PADUS, NCED, and NLCDNFS_FORESTAcres of National Forest System (NFS) forestPADUS and NLCDFEDERAL_FORESTAcres of Other Federal forest (Non-NFS Federal)PADUS and NLCDPER_FORPRIPercent Private ForestCalculated using ArcGISPER_FORNFSPercent NFS ForestCalculated using ArcGISPER_FORPROPercent Protected (Other State, Local, NGO, Permanent Easement) ForestCalculated using ArcGISNLCD_ACAcres of NLCDNLCDPER_NLCDPercent of HUC with NLCD DataCalculated using ArcGISFOREST_ACAcres of all forestNLCD Forest = 41,42,43, 90NLCDPER_FORPercent ForestCalculated using ArcGISAG_ACAcres of agricultural landNLCD = 81,82NLCDPER_AGPercent agricultural landCalculated using ArcGISIMPV_ACAcres of ImperviousNLCDPER_IMPVPercent ImperviousCalculated using ArcGISNATCOVER_ACAcres of Natural CoverNLCD = 11,12,41,42,43,51,52,71,90,95NLCDPER_NATCOVPercent Natural CoverCalculated using ArcGISRIPNAT_ACAcres of riparian natural coverSinan AboodPER_RIPNATPercent riparian natural coverCalculated using ArcGISQ_YLD_MM Mean Annual Water Yield in mm (Q)WASSIR_NATCOVNatural Cover score for APCWCalculated using ArcGISR_AGAgricultural land score for APCWCalculated using ArcGISR_IMPVImpervious Surface score for APCWCalculated using ArcGISR_RIPRiparian Natural Cover score for APCWCalculated using ArcGISAPCWAPCW= (NATCOV_R+AG_R+IMPV_R+RIP_R) * Q_YLD_MMCalculated using ArcGISGUNumber of groundwater under the influence of surface water intakesSDWISGWNumber of groundwater water intakesSDWISSWNumber of surface water intakesSDWISGU_POPNumber of groundwater under the influence of surface water consumersSDWISGW_POPNumber of groundwater water consumersSDWISSW_POPNumber of surface water consumersSDWISGL_IntakesNumber of surface water intakes in the Great Lakes*SDWISGL_POPNumber of surface water consumers in the Great Lakes*SDWISSUM_POPP, Total number of Surface water consumers SW_POP+ + GU_POP + GL_POPSDWISPRRisk based drinking water protection model PRn = ∑(Wi* Pi)Calculated using RPOP_DSSum of surface drinking water population downstream of HUC 12 ∑(SUM_POPn) ***Cannot be summed across multiple HUC12 due to double counting down stream populatons. Only accurate for an individual HUC12.Calculated using RIMPImportant Areas for Surface Drinking Water (IMP). As developed in Forests to Faucets (USFS 2011), the Important Areas for Surface Drinking Water (IMP) model can be broken down into two parts: IMPn = (PRn) * (Qn)Calculated using RWFP_HI_ACAcres with High and Very High Wildfire Hazard Potential (WHP)Dillon, 2018PER_WFPPercent of HU 12 with High and Very High Wildfire Hazard Potential (WHP)Dillon, 2018IDRISK_ACAcres of HU 12 that is at risk for mortality - 25% of standing live basal area greater than one inch in diameter will die over a 15- year time frame (2013 to 2027) due to insects and diseases.Krist, et Al,. 2014PER_IDRISKPercent of HU 12 that is at risk for mortality - 25% of standing live basal area greater than one inch in diameter will die over a 15- year time frame (2013 to 2027) due to insects and diseases.Krist, et Al,. 2014PERDEV_1040_45% Landuse Change 2010-2040 (low)ICLUSPERDEV_1090_45% Landuse Change 2010-2090 (low)ICLUSPERDEV_1040_85% Landuse Change 2010-2040 (high)ICLUSPERDEV_1090_85% Landuse Change 2010-2040 (high)ICLUSPER_Q40_45% Water Yield Change 2010-2040 (low)WASSIPER_Q90_45% Water Yield Change 2010-2090 (low)WASSIPER_Q40_85% Water Yield Change 2010-2040 (high)WASSIPER_Q90_85% Water Yield Change 2010-2090 (high)WASSIAcresHUC 12 AcresCalculated using ArcGISAPCW_RAPCW Score (0-100 Quantiles)Calculated using RIMP_RIMP, Important Areas for Surface Drinking Water (0-100 Quantiles)Calculated using RWFP_IMP_RWildfire Risk to Important Surface Drinking Water Watersheds (0-100 Quantiles)Calculated using RIDRISK_RInsect & Disease Risk to Important Surface Drinking Water Watersheds (0-100 Quantiles)Calculated using RDEV40_45_RLanduse Change Risk to Important Surface Drinking Water Watersheds2010-2040 (low emissions)(0-100 Quantiles)Calculated using RDEV40_85_RLanduse Change Risk to Important Surface Drinking Water Watersheds2010-2040 (high emissions)(0-100 Quantiles)Calculated using RDEV90_45_RLanduse Change Risk to Important Surface Drinking Water Watersheds2010-2090 (low emissions)(0-100 Quantiles)Calculated using RDEV90_85_RLanduse Change Risk to Important Surface Drinking Water Watersheds2010-2090 (high emissions)(0-100 Quantiles)Calculated using RQ40_45_RWater Yield Risk to Important Surface Drinking Water Watersheds2010-2040 (low emissions)(0-100 Quantiles)Calculated using RQ40_85_RWater Yield Risk to Important Surface Drinking Water Watersheds2010-2040 (high emissions)(0-100 Quantiles)Calculated using RQ90_45_RWater Yield Risk to Important Surface Drinking Water Watersheds2010-2090 (low emissions)(0-100 Quantiles)Calculated using RQ90_85_RWater Yield Risk to Important Surface Drinking Water Watersheds2010-2090 (high emissions)(0-100 Quantiles)Calculated using RNEWHU12_WBDCrosswalk HUC12 code to September 2018 Watershed Boundary DatasetWBD 2019

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