gov.noaa.nmfs.inport:78517 eng UTF8 dataset Office for Coastal Management resourceProvider 2026-02-04T20:11:52 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) geometryOnly curve EPSG::4269 Bogue Sound Benthic Cover 1992 2026-02-17 publication NOAA/NMFS/EDM 78517 https://www.fisheries.noaa.gov/inport/item/78517 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information mapDigital These data represent submerged aquatic vegetation for Bogue Sound, North Carolina, collected in 1992 by NOAA's Office for Coastal Management as part of the Coastal Change Analysis Program (C-CAP). The submerged aquatic vegetation was mapped according to stringent parameters detailed in the C-CAP protocol, using 1:20,000-scale aerial photography. Photographs were taken at low tide and during times when the growth stage of the submerged aquatic vegetation allowed for clear identification. Care was taken to minimize the effects of turbidity, sun glint, wind, and haze on the photos. The imagery was scanned using a photogrammetric-quality scanner at a pixel resolution of approximately 0.85 meters. Signature development occurred in the summer of 2001. The images were orthorectified using ground control points sourced from state digital orthoquads and the National Imagery and Mapping Agency's Digital Terrain Elevation Data. The resulting benthic data is classified according to the System for Classification of Habitats in Estuarine and Marine Environments. The thematic accuracy of these data has not been assessed due to the significant time difference between the 1992 image acquisition and the 2002 interpretation date. The layers available within the data download include biotic and substrate. Partners: State of North Carolina To support the inventory of benthic habitat classification, extent, and health pursuant to the National Environmental Policy Act, the Rivers and Harbors Act, and the Coastal Zone Management Act. NOAA Office for Coastal Management completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact notPlanned EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL theme Global Change Master Directory (GCMD) Science Keywords 17.0 benthic biotic coastal seafloor seagrass substrate theme North Carolina United States of America place DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian MarineCadastre project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: Bogue Sound Benthic Cover 1992 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/78517. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Use Constraints: These data were created for planning and management. Users should be aware of temporal changes that may have occurred since the collection of original source data sets. otherRestrictions Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. All content is licensed under the CC0 1.0 Universal public domain dedication. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 78517 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/78517.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference vector eng; US biota environment -77.1686 -76.5522 34.6384 34.7821 | Currentness: Publication Date 1992-05-04 1992-05-24 Bureau Code: 006:48, Program Code: 006:055 https://marinecadastre.gov/downloads/data/benthic/bogue_sound_1992.zip WWW:LINK-1.0-http--link https://marinecadastre.gov/downloads/data/benthic/bogue_sound_1992.zip download https://benthic-data-noaa.hub.arcgis.com/ WWW:LINK-1.0-http--link https://benthic-data-noaa.hub.arcgis.com/ NOAA Benthic Data Hub Registry download dataset Accuracy A spatial accuracy assessment was conducted in the fall of 2002 using the National Standard for Spatial Data Accuracy (NSSDA) statistic. Due to the 10 years between image acquisition and interpretation, a rigorous thematic accuracy assessment would not be reliable. However, field visits indicated that of 33 SAV polygons mapped from the 1992 imagery, 30 had SAV present when visited in 2001 and 2002 (90% agreement). Horizontal Positional Accuracy This data set tested 11 meters horizontal accuracy at 95% confidence level using the NSSDA. Several factors may reduce the horizontal accuracy of the data. The imagery for Bogue Sound was rectified using ground control points (GCPs) selected from features from the state digital orthophoto quadrangles (DOQ). The DOQs had a 1-meter ground resolution at a scale of 1:12,000. During interpretation, offsets as great as 10 meters were noted between neighboring DOQs. In addition, no camera report was available for the imagery. The camera report would have helped account for distortions due the camera lens. Vertical Positional Accuracy A National Imagery and Mapping Agency (NIMA) Digital Terrain Elevation Data (DTED (r)) was used for vertical accuracy. The DTED is a level 1 coverage with a 77-meter pixel size. Completeness Report Untested Conceptual Consistency These data are logically consistent The 1992 imagery for Bogue Sound, NC was acquired from the NOS MapFinder Web site. Signature development took place during the summer of 2001. Field observations were used to help the interpreter recognize and identify the benthic signatures and develop the classification scheme. The images were scanned using a photogrammetric quality scanner (AGFA Horizon Plus) at a resolution of 600 dots per inch (dpi) resulting in a pixel resolution of 0.85 meters. The digital images were orthorectified using ERDAS Imagine 8.5 Orthobase. No camera report was available for the 1992 imagery, so the default RC-20 Wild camera settings were used. Ground control points were selected from similar features on the 1999 North Carolina USGS standard digital orthophoto quadrangles (DOQ). The DOQs are compressed JPEG files at a scale of 1:12,000 with 1-meter resolution. They were purchased from the state of North Carolina in 2002. NIMA Digital Terrain Elevation Data (DTED) level 1 coverage with a 77-meter resolution were used for the vertical data reference. The orthorectified images were interpreted and digitized on screen using ArcGIS 8.2. The benthic data is classified according to the System for Classification of Habitats in Estuarine and Marine Environments (SCHEME). The data were labeled using ArcView 3.2 and the Benthic Habitat Digitizer extension (developed by the NOS Biogeography Program). The data have not been assessed for thematic accuracy due to the large disparity between dates of image acquisition in 1992 and interpretation in 2002. The data was assessed for spatial accuracy during the fall of 2002. Sources used in this processing step were the DTED, Aerial Photos, and DOQs. 2002-08-30T00:00:00 The data were converted from a single ESRI polygon data set classified according to the System for Classifying Habitats in Estuarine and Marine Environments (SCHEME) to the Coastal and Marine Ecological Classification Standard (CMECS) 2012 format. This produced separate biotic and substrate feature layers from the original input benthic habitat dataset. Each of the two feature layers contain respective CMECS biotic and substrate component attributes where an "Equal" or "Nearly Equal" SCHEME value was present in the original data. Polygons for which no biotic or substrate information was present have been removed. No other changes to the original polygon boundaries or any other alterations of the original SCHEME data were made during this process. 2015-01-01T00:00:00 Standardized common design elements, cleaned up field content, repaired geometry, and projected to NAD83. 2025-08-01T00:00:00 Source Contribution: The DTED (Level 1 coverage) was used as the horizontal control during the orthorectification. Source data were from CD-ROM. Digital Terrain Elevation Data (DTED (r)) National Imagery and Mapping Agency (NIMA) originator 1996-02-08