1980 Marinette County, WI NOAA Black & White 8 Bit Imagery

Historic aerial imagery for the Great Lakes shoreline of Lake Michigan was provided by the Bay-Lake Region Planning Commission (BLRPC). This imagery was captured in November 1980 by Aero-Metric Engineering, Inc. and archived by the BLRPC by Range/Township on mylar sheets at a scale of 1"=800'. Under contract to NOAA, Dewberry obtained the mylar sheets from BLRPC, scanned them at 600 DPI, and georeferenced the scanned images.

Historic aerial imagery for the Great Lakes shoreline of Lake Michigan was scanned, geo referenced and delivered to the National Oceanic and Atmospheric Administration (NOAA). This historical data is available for coastal management organizations interested in the effects of land cover and shoreline change over time.

Aerial imagery flown by Aero-Metric in November 1980. Imagery from Marinette County, WI. Ground spatial resolution was 1:9600. Imagery was provided by the Bay-Lake Region Planning Commission. Georeferenced with spatial projection NAD 1983 Great Lakes and St. Lawrence Albers, EPSG code 3175. The final image product was reprojected to NAD83 (2011)/UTM 16 North, GRS 80, EPSG code 6345.

Users must assume responsibility to determine the appropriate use of these data. DATA SHOULD NOT BE USED FOR LEGALLY BINDING APPLICATIONS.

None

None. However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

ArcGIS 10.3; Microsoft Windows 10; Microsoft Office; Intergraph's suite of photogrammetric products including GeoMedia OrthoPro

The Circular Map Accuracy Standard (CMAS) was 3.77 meters with a 90% confidence level. This was based on the analysis of 106 ground control points taken from all eight counties in this project. The points were acquired in urban areas on paint strips, stop bars or other features photo-identifiable in the imagery.

All GeoTIFF tagged data and image file sizes are validated using commercial GIS software to ensure proper loading before being archived. This validation procedure ensures correct physical format and field values for tagged elements. Seamlines and tile edges are visually inspected. Seamline mismatches are not corrected unless the overall displacement exceeds one meter.