LANDSAT Fly Over Land Use Data for the Chesapeake Basin

In order to create a model to estimate nutrient loadings, the
Chesapeake Bay Program obtained LANDSAT satellite images to map land use
of the Chesapeake Basin. The data was aggregated into sub-basin units
and divided into nine categories of land use: forest, cropland with
winter cover (low-till), cropland without winter cover (hightill),
pasture, low density residential, medium density residential, high
density residential, commercial industrial, and idle land. Photographs
were taken in April, May and June 1977-1979, to determine differences in
agricultural use. (VAMDSG).

Processing: LANDSAT imagery USGS Level I Land Cover Classification
analysis was performed on Eastern Regional Remote Sensing Application
(ERRSAC) Hewlett-Packard 3000 computer at Goddard Space Center using
Interactive Digital Image Manipulation System (IDIMS) and Geographic
Entry System (GES) software packages.

The data are available as file LAND,SSD and can be requested from the
CBP Computer Center by letter or telephone; requests which require more
than three hours of staff time to complete must be approved by the EPA
Chesapeake Bay Program Director; requests requiring less than three
hours are completed typically in six to eight weeks; requests requiring
more staff time may take two to six months, depending upon the nature of
the request. User accounts may be set up for those needing access to
CBP-CC data base if the proposed work is included in the CBP Restoration
and Protection Plan; accounts must be approved by the CBP Data
Management Subcommittee.

EPA Chesapeake Bay Program Computer Center