This layer is the 2006 impervious surfaces classification based on IKONOS imagery for St. John, United States Virgin Islands. The impervious surfaces layer was produced in conjunction with a land cover layer for the island derived from the same IKONOS data. 20090427 remote-sensing image Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://www.csc.noaa.gov/digitalcoast/data/ccapregional/index.html This is a final impervious surface layer ready for distribution through NOAA CSC. The data set is an inventory of impervious surfaces for St John, United States Virgin Islands for the year 2005. Impervious surfaces prevent infiltration of precipitation into the soil, disrupting the water cycle and affecting both the quantity and quality of water resources. Impervious surfaces include manmade features such as building rooftops, parking lots and roads consisting of asphalt, concrete and/or compacted dirt. This data set utilized IKONOS multispectral scenes which were processed to detect impervious features on St John, United States Virgin Islands. To create a baseline inventory of impervious surfaces which can be utilized by state and local resource managers to assess the impacts precipitation events on water quality and flooding. 20050918 20051226 Acquisition date of the IKONOS Complete 5 years -64.813370 -64.647131 18.373678 18.297471 CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Coastal Habitat EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing CoRIS Discovery Thesaurus Geographic Information > Habitats ISO 19115 Topic Category imageryBaseMapsEarthCover 010 None Remotely Sensed Imagery/Photos Impervious Surface CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. John > St. John (18N064W0011) OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Virgin Islands > St. John (18N064W0011) None St. John United States Virgin Islands Caribbean Islands CoRIS Region USVI None Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, NOAA, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Microsoft Windows XP Version 5.1 (Build 2600.xpsp.080413-2111) Service Pack 3; ESRI ArcMap 9.3 (Build 1850) No automated accuracy was performed during or at the end of the impervious map production process. Quality Control was carried out by cross-examination Unites Stats Virgin Islands (USVI)Impervious map with the IKONOS image. Errors of omission and commission were corrected. All impervious objects sized smaller than the Minimum Mapping Unit (25 sq m) were ignored and not included in USVI impervious map. Tests for logical consistency indicate that all row and column positions in the selected latitude/longitude window contain data. Conversion and integration with vector files indicates that all positions are consistent with earth coordinates covering the same area. Attribute files are logically consistent. Data set is complete. 12 meters CE90 There was no terrain correction in the geo-referencing procedure. NOAA CSC 20090427 remote-sensing image Charleston SC NOAA's Ocean Service, Coastal Services Center (CSC) http://www.csc.noaa.gov/lca DVD/CD-ROM 20050918 20051226 Date of the IKONOS scenes NOAA CSC NOAA CSC This dataset was created by The NOAA Coastal Services Center. The impervious surface classification is based on IKONOS imagery. The study area for the project was St. John, United States Virgin Islands. Automated Classification: The automated portion of the classification methodology utilized the Feature Analyst extension for ArcGIS. Feature extractions were performed by providing the algorithm with examples of impervious features to extract from the IKONOS imagery. Once the extractions were completed an internal review was performed by C-CAP analysts at NOAA CSC. Classes 0 - Pervious 1 - Impervious 20090427 CRS (Coastal Remote Sensing) Program Manager NOAA Coastal Services Center Coastal Change Analysis Program (C-CAP) CRS Program Manager mailing and physical address

2234 S. Hobson Ave.

Charleston SC 29405 USA 843-740-1210 843-740-1224 clearinghouse@noaa.gov 8:00 am to 5:00 p.m. EST. M-F Manual editing and modeling: Errors or areas that could not be consistently extracted from the imagery were resolved through manual edits and using ancillary data sets. In some areas of the islands, impervious surface features are obscured by clouds, shadows or tree canopy. Alternate imagery was used to map these areas. For this project no alternate imagery was needed for St John Island. 20090427 NOAA Coastal Services Center Coastal Change Analysis Program (C-CAP) CRS Program Manager mailing and physical address

2234 S. Hobson Ave.

Charleston SC 29405 USA 843-740-1210 843-740-1224 csc@noaa.gov Monday to Friday, 8 a.m. to 5 p.m., Eastern Standard Time To finalize the map, the revised impervious surface layer was subjected to an external review by the CNMI Coastal Zone Management Program. Feedback was provided and addressed by NOAA CSC staff. 20090427 NOAA Coastal Services Center Coastal Change Analysis Program (C-CAP) CRS Program Manager mailing and physical address

2234 S. Hobson Ave.

Charleston SC 29405 843-740-1210 843-740-1224 csc@noaa.gov Monday to Friday, 8 a.m. to 5 p.m., Eastern Standard Time Raster Pixel 3588 7290 1 Universal Transverse Mercator 20 0.9996 147.000000 0.000000 500000.000000 0.000000 Row and Column 2.400000 2.400000 meters D_WGS_1984 WGS_1984 6378137.000000 298.257224 Layer_1 United States Virgin Islands delineated by IKONOS Scenes unknown Value 0 or 1 indicates whether pixel is impervious or not. NOAA Coastal Services Center High-Resolution Land Cover Project 0 Pervious Features which allow infiltration from precipitation. NOAA Coastal Services Center High-Resolution Land Cover Project 1 Impervious Anthropogenic features such as buildings, parking lots and roads developed from asphalt, concrete or other constructed surfaces which do not allow infiltration from precipitation. NOAA Coastal Services Center High-Resolution Land Cover Project NOAA Coastal Services Center Clearinghouse Manager Clearinghouse Manager mailing and physical address

2234 South Hobson Avenue

Charleston SC 29405-2413 USA (843)740-1210 (843)740-1224 clearinghouse@noaa.gov Monday-Friday, 8-5 EST Downloadable Data Users must assume responsibility to determine the usability of these data. ERDAS Imagine image file (.img) ESRI Run-length Encoding http://www.csc.noaa.gov/digitalcoast/data/coastal-change-analysis-program-high-resolution-land-cover/download CD-ROM ISO 9660 ISO 9660 format allows the CD-ROM to be read by most computer operating systems. none 20121220 20091231 NOAA Coastal Services Center Metadata Specialist Metadata Specialist mailing and physical address

2234 S Hobson Ave.

Charleston SC 29405 USA 843-740-1210 843-740-1224 csc@noaa.gov 8:00 am to 5:00 pm EST. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 20091231033848 None 20050918 20051226 http://www.coris.noaa.gov/metadata/records/html/ccap_2005_era_stjohn_imp.html 4394