Digital Orthophoto Quarter Quarter Quadrangle (DOQQQ)
The digital orthophotography was produced as part of the South Carolina Oyster Beds Imaging effort to support the mapping of intertidal oyster reefs. The project area was over specified areas of the South Carolina coastal critical zone where oysters have been traditionally mapped by the South Carolina Department of Natural Resources, Marine Division.
The digital orthophotos in this series have a theoretical ground resolution of 0.25 meter. The extent of the DOQQQs for the project area range from the Hilton Head area in the southern part of South Carolina to the Myrtle Beach area in the northern part of the state. The Imagery flight dates are 2003-2006 taken in the spring - fall. OCRM, SCDHEC extended the project area up to the saltwater/freshwater line and imagery flight dates are 2006-2007 taken in the spring - fall. A compressed version of the images are available in both Natural Color and Color-infrared.
A DOQQQ can be incorporated into any geographic information system (GIS) that can manipulate raster images. It can function as a cartographic base for displaying, generating, and modifying associated digital data.
Project Partners include:
- Marine Resources Research Institute (MRRI), SCDNR
- NOAA Coastal Services Center Charleston, SC
- SCDHEC Ocean & Coastal Resource Management (OCRM)
Geographic Coordinate System
UTM, Zone 17, Meters, Datum NAD83
Compressed Format for DOQQQ Data
Status map of available DOQQQ
DOQQQ Coverage Area Map (Adobe PDF file)
Viewing JPEG2000 Images
To view the imagery, you will need computer mapping software. A free viewer from ESRI is available ArcExplorer. The TatukGIS Viewer is a free viewer available from TatukGIS. and LizardTech has a trial version of GeoJP2 Viewer to view the JPEP2000 image data.
ESRI ArcView 3.x users will need to download a free plug-in extension from LizardTech, GeoJP2 ArcView Plugin, to view JPEG2000 image data.
For other software programs, please consult your particular software's help to determine compatibility with this format and any required software updates and/or plugins.
Download Available DOQQQ
Data is available for download at no cost from DNR's ftp site.
Natural Color: ftp://ftpdata.dnr.sc.gov/gisdata/doqqq/NaturalColor/
Link to DOQQQ Index:
ESRI Shapefile - doqqqindex.zip
Refer to the following link for additional information about the SC Intertidal Oyster Reef project data sets available.