United States Class 1 Federal Areas - 1997 Light Pollution Study - Lower 48 States

United States Class 1 Federal Areas - 1997 Light Pollution Study - Lower 48 States

Summary - Over half of the 149 Class 1 Federal Areas analyzed have moderate to severe light pollution problems.

One-quarter of these areas have lost the ability to see half of the visible stars. - RW

National Park Service most impacted area

U.S. Fish & Wildlife Service most impacted area

USDA Forest Service most impacted area - East

USDA Forest Service most impacted area - West

As a rough estimate - around Green you loose approximately half of the visible stars and around Orange you loose three-fourths. - Robert Wagner

  • Key and US Forecasted Growth
  • US Forecasted Growth
    These images were produced using the North American Night Sky Brightness Overlay and Google Earth.
  • KMZ file of Federal Class 1 Areas in lower 48 states (excludes Alaska and Hawaii)
    Credit: P. Cinzano, F. Falchi (University of Padova), C. D. Elvidge (NOAA National Geophysical Data Center, Boulder). Copyright Royal Astronomical Society. Reproduced from the Monthly Notices of the RAS by permission of Blackwell Science
    The list of 156 Mandatory Class 1 Federal Areas is available at the EPA Website.
    A map of Federal Class 1 Areas is available at the NPS Website.
    This site is maintained by Robert Wagner - of Kansas City, MO. Please contact me if you have any additional relevant information or corrections.

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