64351 Data Set Published / External 64406 Deepwater Horizon Project Completed 2010-10-08 Unknown 2012-12-11 The sub-aquatic vegitation map for was produced for the SAV Technical Working Group under a cooperative workplan with BP. The SAV map was derived from 0.3 meter resolution visible and near-infrared imagery collected by Aerometric. The imagery was segmented into homogeneous image objects following an object-based image analysis (OBIA) approach. The image objects were subsequently classified using Classification and Regression Tree (CART) statistical analysis. Manual edits based on air photo interpretation were performed to correct obvious errors and refine the map. A draft map was reviewed by USGS personnel and final edits made based on their comments. The polygons were dissolved based on the class assignments and a minimum mapping unit of 4 square meters was enforced. This dataset was created to provide a comprehensive assessment of the distribution and extent of submerged aquatic vegetation (SAV) off-shore of Petit Bois, Horn Islands, and Chandeleur Islands after the Deep Water Horizon oil spill. Theme Global Change Master Directory (GCMD) Data Center Keywords DOC/NOAA/NOS/ORR > Office of Response and Restoration, National Ocean Service, NOAA, U.S. Department of Commerce Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > OIL SPILLS Theme Global Change Master Directory (GCMD) Service Keywords EARTH SCIENCE SERVICES > HAZARDS MANAGEMENT > HAZARDS MITIGATION Spatial Global Change Master Directory (GCMD) Location Keywords OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA Theme DWH Theme Deepwater Horizon Theme MC252 Theme SAV Theme Seagrass Theme Submerged Aquatic Vegetation Spatial Chandeleur Islands Spatial Gulf of Mexico Spatial Horn Island Spatial Petit Bois Island Office of Response and Restoration Silver Spring MD US Data Set GIS Files Unknown Map (digital) Attribute information can be found in the feature class attribute table. Fields in the Feature Class Attribute Table: OBJECTID = Internal feature number Shape = Feature geometry (ie polygon) ClsFnlQC_AreaSwitch = Class value, where 1 = SAV Shape_Length = Length of feature in meters Shape_Area = Area of feature in square meters SAVCls = Final Class value, where 1 = SAV While NOAA makes every effort to ensure that its databases are error-free, errors do occur. We ask that you notify us immediately of any errors that you discover in our data. We will make every effort to correct them. With respect to documents available from this server, neither the United States Government nor any of its employees, makes any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose; nor assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed; nor represents that its use would not infringe privately owned rights. The Petit Bois, Horn Islands, & Chandeleur Islands SAV Map was produced by NewFields for the SAV Technical Working Group under a cooperative workplan with BP. Oversight and review was provided by USGS. Data Steward 2010 Organization Office of Response and Restoration ORR https://ror.org/03g5tqa50 1305 East-West Highway Silver Spring MD 20910 https://response.restoration.noaa.gov/ ORR Home Page Online Resource Distributor 2010 Organization Office of Response and Restoration ORR https://ror.org/03g5tqa50 1305 East-West Highway Silver Spring MD 20910 https://response.restoration.noaa.gov/ ORR Home Page Online Resource Metadata Contact 2010 Organization Office of Response and Restoration ORR https://ror.org/03g5tqa50 1305 East-West Highway Silver Spring MD 20910 https://response.restoration.noaa.gov/ ORR Home Page Online Resource Originator 2010 Organization NewFields rspell@newfields.com https://www.newfields.com/ New Fields Online Resource Point of Contact 2010 Organization Office of Response and Restoration ORR https://ror.org/03g5tqa50 1305 East-West Highway Silver Spring MD 20910 https://response.restoration.noaa.gov/ ORR Home Page Online Resource Ground Condition The shallow waters off the northern shore of Petit Bois Island, Horn Island, and Chandeleur Islands. -88.88011 -88.415939 30.257241 29.7745 Discrete 2010-10-08 Yes Yes Yes Projected EPSG:26916 NAD83 / UTM zone 16N North American Datum 1983 GRS 1980 6378137 298.257222101 NAD83 UTM zone 16N Transverse Mercator Latitude of natural origin 0° 0' 0" N Longitude of natural origin 87° 0' 0" W Scale factor at natural origin 0.9996 False easting 500000 metre False northing 0 metre 1 Easting E metre east 2 Northing N metre north Standard CC0-1.0 https://creativecommons.org/publicdomain/zero/1.0/ These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). Restricted These data may be provisional and restricted to Trustees within a Natural Resource Damage Assessment. The user is responsible for the results of any application of this data for other than its intended purpose. These metadata may be provisional and restricted to Trustees within a Natural Resource Damage Assessment. These metadata may be provisional and restricted to Trustees within a Natural Resource Damage Assessment. https://erma.noaa.gov/gulfofamerica/erma.html 2010 Organization Office of Response and Restoration https://ror.org/03g5tqa50 Shapefile Zip Zip Not Chked https://erma.noaa.gov/gulfofmexico/erma.html#/layers=1+27322&x=-88.68313&y=30.25426&z=12.7&panel=layer Visual representation of GIS data Online Resource Web While NOAA makes every effort to ensure that its databases are error-free, errors do occur. We ask that you notify us immediately of any errors that you discover in our data. Horizontal positional accuracy is based on the accuracy of the aerial imagery provided by Aerometric. The imagery collected and orthocorrected by Aerometric met the ASPRS Class 2, 1:24,000 scale accuracy standards which limit the RMS in X or Y to 4 ft. Mismatches between adjacent images averaged less than 3 pixels and did not exceed 6 pixels. The SAV mapping was restricted to the leeward side of the islands. No mapping was performed on the Gulf side of the islands where wave energy is generally too strong for SAV to prosper. The data attribute fields were checked for bad values and consistency of values. The Spatial Data Branch publishes this data on behalf of the originator. Data visually represented in ERMA are aimed to guide responders, decision makers, and users in making informed steps of analysis and action. NOAA Organization NOAA/NOS/ORR/ARD/SDB - Assessment and Restoration Division/Spatial Data Branch Originator 2012-12-11 1 Data collected in support of the NRDA were collected and managed in the DIVER platform, an environmental data warehouse developed and maintained by the National Oceanic and Atmospheric Administration (NOAA) Office of Response and Restoration (ORR) Assessment and Restoration Division (ARD). Organization Office of Response and Restoration ORR https://ror.org/03g5tqa50 1305 East-West Highway Silver Spring MD 20910 https://response.restoration.noaa.gov/ ORR Home Page Online Resource NOAA Not Applicable Not Applicable gov.noaa.nmfs.inport:64351 Adam Rotert 2021-03-10T05:20:53 SysAdmin InPortAdmin 2026-07-09T18:26:06 2021-03-18 Office of Response and Restoration ORR 1002 Public No No 2021-03-18 1 Year 2022-03-18