{26f38d8d-f17a-4758-a78f-084ab83d4c28} eng; USA utf8 dataset EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment (CPHEA), EnviroAtlas Geospatial Data Owner (919) 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas pointOfContact 2025-07-23 ISO 19115 Geographic Information - Metadata ISO 19115:2003/Cor.1:2006(E) EnviroAtlas - 2016 Percent Tree Canopy Cover by 12-digit HUC for Puerto Rico and the U.S. Virgin Islands 2020-06-02 publication U.S. EPA Office of Research and Development (ORD) - Center for Public Health and Environmental Assessment (CPHEA) Research Triangle Park NC publisher U.S. Environmental Protection Agency (US EPA) originator This EnviroAtlas dataset represents the percentage of land area within each 12-digit hydrologic unit code (HUC) in Puerto Rico and the US Virgin Islands that is classified as tree canopy using the National Land Cover Database 2016 (NLCD2016) USFS Tree Canopy Cover (Puerto Rico) dataset. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets). This dataset is useful for evaluating the potential value of ecosystem services provided by vegetation communities, and the impacts of developed land cover. The overall goal of EnviroAtlas is to employ and develop the best available science to map indicators of ecosystem services production, demand, and drivers for the nation. completed EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment (CPHEA), EnviroAtlas Geospatial Data Owner (919) 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas pointOfContact asNeeded Ecosystem Environment theme EPA GIS Keyword Thesaurus 12-digit HUCs Ecosystem Services EnviroAtlas Environment Environmental Atlas Green Space Impact Land Cover theme EnviroAtlas Puerto Rico Virgin Islands United States place None https://edg.epa.gov/EPA_Data_License.html otherRestrictions Use Constraints: None. Please check sources, scale, accuracy, currency and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgment of the EPA would be appreciated. otherRestrictions Access Constraints: None PUBLIC https://project-open-data.github.io/schema/#accessLevel Standard Technical Controls eng; USA environment -67.951455 -64.565191 17.673736 18.516091 2016-01-01 true Entity and Attribute Information Entity and Attribute Overview: The metric was generated using the Zonal Statistics as Table tool in ArcGIS 10.7 for Desktop. NHDPlusV2_WBDSnapshot_EnviroAtlas_PR and NHDPlusV2_WBDSnapshot_EnviroAtlas_VI were used as the feature zone data with HUC_12 set as the Zone field. CNPY2016PRUSVI_NoWater derived from the NLCD 2016 USFS Tree Canopy Cover Product (https://www.mrlc.gov/data) was used as the Input value raster. A comprehensive list of metric creation steps is included in the Processing Steps. Entity and Attribute Detail Citation: https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment (CPHEA), EnviroAtlas Geospatial Data Owner (919) 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas distributor https://enviroatlas.epa.gov/download/PRVI_metrics_Mar2024_FGDB.gdb.zip download Download The URL providing direct access to the downloadable dataset. download https://enviroatlas.epa.gov/download/PRVI_metrics_Mar2024_CSV.zip ESRI:ArcGIS API The endpoint of a web service to access the dataset (REST endpoint, WMS GetCapabilities URL, or a SOAP WSDL endpoint). webMapService https://www.epa.gov/enviroatlas/enviroatlas-data information Documentation URL for accessing related documents such as data dictionary, technical information about a dataset, developer documentation, etc. information https://www.epa.gov/enviroatlas information Home Page Alternative landing page used to redirect user to a contextual, Agency-hosted "homepage" for the Dataset or API information dataset Horizontal Positional Accuracy Report Data were collected using methods that have unknown accuracy (EPA National Geospatial Data Policy [NGDP] Accuracy Tier 10). For more information, please see EPA's NGDP at http://epa.gov/geospatial/policies.html Features represented have not been tested for completeness Features represented have not been tested for completeness Tests for integrity have not been performed. This lineage was generated by the FGDC CSDGM to 19139 transformation Obtained the NLCD 2016 USFS Percent Tree Canopy (PRUSVI) raster for Puerto Rico and the US Virgin Islands from https://www.mrlc.gov/data. 2020-05-07T00:00:00 Obtained the NHDPlusV2 Watershed Boundary Dataset (WBD) Snapshot, EnviroAtlas version for Puerto Rico. Source: https://www.epa.gov/enviroatlas 2017-08-17T00:00:00 Obtained the NHDPlusV2 Watershed Boundary Dataset (WBD) Snapshot, EnviroAtlas version for US Virgin Islands. Source: https://www.epa.gov/enviroatlas 2017-08-17T00:00:00 Obtained the EnviroAtlas version of the C-CAP land cover raster for Puerto Rico (PR_CCAP_Land_Cover_2010_EnviroAtlasVersion_20170814.gdb). Source: https://www.epa.gov/enviroatlas 2017-08-17T00:00:00 Obtained the EnviroAtlas version of the C-CAP land cover raster for US Virgin Islands (VI_CCAP_Land_Cover_2012_EnviroAtlasVersion_20170814.gdb). 2017-08-17T00:00:00 Created new raster (CNPY2016PRUSVI_ND) by setting areas in the NLCD 2016 USFS Percent Tree Canopy raster to NODATA for areas classified in the VALUE field as greater than 100. 2020-06-01T00:00:00 Created new constant raster (CONSTANT99) that had the same extent, cell size, and geographic projection as CNPY2016PRUSVI_ND. All cells had the value of "99". 2020-06-01T00:00:00 Created new raster (CCAP_REPROJ_PR) by reprojecting the C-CAP land cover raster to match the Albers projection used for the NLCD 2016 Percent Tree Canopy raster. The output extent, cell size, and cell origin were set to match the NLCD 2016 Tree Canopy raster as well. The sampling technique was set to MAJORITY. 2020-06-01T00:00:00 Created new raster (CCAP_REPROJ_VI) by reprojecting the C-CAP land cover raster to match the Albers projection used for the NLCD 2016 Percent Tree Canopy raster. The output extent, cell size, and cell origin were set to match the NLCD 2016 Tree Canopy raster as well. The sampling technique was set to MAJORITY. 2020-06-01T00:00:00 Created new raster (mosaicPR) by performing an ArcGIS MOSAIC (Data Management) operation between CONSTANT99 and CCAP_REPROJ_PR. The tool's optional Mosaic Operator was set to MINIMUM. The output raster has the same projection, extent, and cell size as the NLCD 2016 Tree Canopy raster. NoData cells have the value "99". 2020-06-01T00:00:00 Created new raster (mosaicVI) by performing an ArcGIS MOSAIC (Data Management) operation between CONSTANT99 and CCAP_REPROJ_VI. The tool's optional Mosaic Operator was set to MINIMUM. The output raster has the same projection, extent, and cell size as the NLCD 2016 Tree Canopy raster. NoData cells have the value "99". 2020-06-01T00:00:00 Created new raster (CCAP_PRUSVI_Mosaic) by performing a CON statement to create a single grid with the CCAP land cover information for both Puerto Rico and the US Virgin Islands in it and with the same extent, projection, and cell size as the NLCD 2016 Tree Canopy raster. NoData cells are coded as "99". Con ("mosaicVI", "mosaicPR", "mosaicVI", "value = 99") 2020-06-01T00:00:00 Used SET NULL to create a new raster (CNPY2016_PRUSVI_NoWater) by setting areas coded as Background (value = 0), Unclassified (value = 1), Open Water (value = 21), Palustrine Aquatic Bed (value = 22), or Estuarine Aquatic Bed (value = 23) in CCAP_PRUSVI_Mosaic to NO DATA. All other grid cells were set to the value found in the corresponding cell in the CNPY2016PRUSVI_ND grid. 2020-06-01T00:00:00 The mean percent canopy cover within each 12-digit Hydrologic Unit was determined using the Zonal Statistics as Table tool in ArcGIS 10.7.1 for Desktop. NHDPlusV2_WBDSnapshot_EnviroAtlas_PR was used as the feature zone data with HUC_12 set as the Zone field. CNPY2016PRUSVI_NoWater was used as the Input value raster. The output table was named, pCNPY2016_PR. 2020-06-01T00:00:00 The mean percent canopy cover within each 12-digit Hydrologic Unit was determined using the Zonal Statistics as Table tool in ArcGIS 10.7.1 for Desktop. NHDPlusV2_WBDSnapshot_EnviroAtlas_VI was used as the feature zone data with HUC_12 set as the Zone field. CNPY2016PRUSVI_NoWater was used as the Input value raster. The output table was named, pCNPY2016_VI. 2020-06-01T00:00:00 Added a field to the pCNPY2016_PR and pCNPY2016_VI tables named, pCanopy, and did a field calculation to make the contents of the pCanopy field to equal that of the MEAN field. Deleted all fields save HUC_12 and pCanopy. 2020-06-01T00:00:00 Appended pCNPY2016_VI to pCNPY2016_PR. Output: PCanopy_PRVI 2020-06-01T00:00:00 unknown 2029-07-23 This metadata was automatically generated from the FGDC Content Standard for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2024-02-09T11:11:00 version of the FGDC CSDGM to ISO 19139 transform. EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment (CPHEA), EnviroAtlas Geospatial Data Owner (919) 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas pointOfContact