Dorchester County, MD
Countywide Digital Mapping Project – Primary objectives were to provide the County with several Geospatial Data Deliverables which will be used in their GIS to manage and enhance their Emergency Management Center and Planning and Zoning Department. This project involved flying Talbot, Dorchester and Wicomico Counties (approximately 1,500 sq.mi.) with 6” Pixel ADS40 Imagery for seamless color digital orthoimagery in both True Color and Color Infrared. ADS40 L1 stereo imagery was also produced to collect new 1” = 100’ countywide planimetric data as well as supplement existing 2003 LiDAR data with breaklines in order to produce countywide 2’ Contours. The incorporated towns and other communities were flown with AGPS aerial film to produce .25’ pixel imagery conducive to 50- scale mapping applications. Approximately 80 different angles of low-altitude Color Oblique Imagery was flown for all towns and delivered in TIFF format.

AXIS was contracted to collect new countywide planimetric data, street/road centerline data, address point data, parcel data and emergency response map books.

The following is a general list of Scope of Work for
Dorchester County, MD:

  • 2006 – 2011 / 40% Complete
  • ADS40 Multispectral Aerial Imagery
  • Color AGPS Aerial Photography
  • Color Digital Oblique Aerial Imagery
  • Ground Control & NGS Monumentation
  • High Resolution Film Scanning
  • Softcopy Aerotriangulation
  • 6” Pixel Seamless True-Color & CIR Digital Orthophotography in TIFF/TFW and MrSID
  • Softcopy Stereo Collection of 100 scale planimetrics
  • Softcopy Stereo Collection of Breaklines for LiDAR DTMs
  • Generate Countywide 2’ Contours from Enhanced LiDAR DTMs
  • Create Parcel Geodatabase through COGO Methods from Plats &
  • Deeds and MdProperty View
  • Create Field-Verified, Address Point Geodatabase Reconciled to
  • Verizon’s ESL Database
  • Create Field-Verified, Street Centerline Geodatabase with Address Ranging and Street Names Reconciled to the County’s MSAG
  • Create County Map Books and Wall Map and print 150 Color Map Books
  • Create a Nautical Navigation Geodatabase for County’s GIS
  • Develop and Install a County ArcIMS Website
  • Install ArcSDE
  • Update and Maintain County’s Street Centerline, Address Points and
  • Parcel data for a period of 5 Years.
  • Installation and training