Metadata

Coordinate System & Projection Information

  • Zone: Michigan South
  • POSC Code: 26990
  • Geographic Coordinate System: GCS North American 1983
  • Datum: North American 1983
  • Spheroid: GRS 1980
  • Prime Meridian: Greenwich (0)
  • Projection: Lambert Conformal Conic
  • Unit: US Foot (0.3048006096012192 meter)
  • 1st Std. Parallel: 42.1
  • 2nd Std. Parallel: 43.66666666666666
  • Central Meridian: -84.36666666666666
  • Origin (Latitude): 41.5
  • False Easting (Feet): 13123333.3333333
  • False Northing (Meters): 0

Berrien County, Michigan Photogrammetric Base Mapping Specifications

2011 Orthophoto

Aerial Photography

  • Acquired April, 2011
  • Color
  • Snow off ground
  • Leaves off trees
  • Company: Woolpert

Digital Orthophotos

  • Bands: 4
  • Format: MrSID
  • Pixel resolution = 6 inch
  • Produced to meet or exceed National Mapping Accuracy Standards for 1":100' aerial photography.

Spatial Information

  • Projection: Lambert Conical Conformal (Lambert)
  • Coordinate System: U.S. State Plane (Michigan Southern Zone)
  • (1983, US Survey feet)
  • Datum: NAD83 (horizontal) NAVD88 (vertical)

2005 Orthophoto

Aerial Photography

  • Acquired April, 2005
  • Black and White
  • Snow off ground
  • Leaves off trees
  • Sun angle > 30 degrees above horizon
  • Acquire photography @ scale of 1" = 800' (1:9600)
  • Company: Aerocon (Sunfield, Michigan)
  • Plane height of 4,800'

Digital Orthophotos

  • Gray scale value from 0 to 255
  • Pixel resolution = 6 inch
  • Produced to meet or exceed National Mapping Accuracy Standards for 1":100' aerial photography.

Spatial Information

  • Projection: Lambert Conical Conformal (LAMBERT)
  • Coordinate System: U.S. State Plane (Michigan Southern Zone)
  • (1983, US Survey feet)
  • Datum: NAD83 (horizontal) NAVD88 (vertical)

1996 Orthophoto

Aerial Photography

  • Acquired Spring, 1996
  • Black & White
  • Snow off ground
  • Leaves off trees
  • Sun angle > 30 degrees above horizon
  • Acquire photography @ scale of 1" = 2000' (1:24000)
  • Company: Woolpert, Inc. (Dayton, Ohio)
  • Plane height of 12,000'

Digital Orthophotos

  • Gray scale value from 0 to 255
  • Pixel resolution = 1 foot
  • Horizontal accuracy: +/- 5 feet
  • Digital orthophoto tiles: 714 total coverage
  • Tile size: 5000' by 5000'
  • File format: Tiff, Class G
  • File size: 25 MB each tile
  • Total file storage: 18 gigabytes total coverage
  • Produced to meet or exceed National Mapping Accuracy Standards for 1":200' aerial photography.

Reduced Resolution Orthophotos

These were created to allow areas of imagery to be accessed and displayed more rapidly at different scales. Reduced resolution datasets were created fro 2-foot, 4-foot, 8-foot, 16-foot, and 32-foot resolution.

Spatial Information

  • Projection: Lambert Conical Conformal (LAMBERT)
  • Coordinate System: U.S. State Plane (Michigan Southern Zone)
  • (1983, US Survey feet)
  • Datum: NAD83 (horizontal) NAVD88 (vertical)