| 2002 Land Use/Land Cover by Watershed Management Area (WMA):
The 2002 Land Use Land Cover dataset is the third iteration conducted by the NJDEP to capture
the state of the land use and natural land cover statewide in a digital GIS file. The initial land use
land cover GIS file was based on aerial photography captured in the spring of 1986. The second
iteration of the land use data was based on photography captured in 1995, with this latest series
based on photography captured in the spring of 2002.
As with both previous layers, the 2002 data were produced by visually interpreting
color infrared photography. Through this process, photo-interpreters examine each image, and based on
their knowledge of photo signatures, classify the image into various land use/ land cover categories.
The classifications are converted into a land use/land cover GIS digital file, with each delineated
polygon representing a distinct land use/land cover type.
All three land use/land cover data sets contain important land use data used in a
wide variety of environmental analyses. Every effort has been made to insure that all land use data
sets are as accurate as possible. However LULC data are not intended to substitute for on the ground
jurisdictional boundaries. Users of all data sets should refer to the links included below for more
information that will help them understand the mapping process and appropriate uses and limitations of the data.
Freshwater wetlands were first mapped under the New Jersey Freshwater Wetlands Mapping
Program and were incorporated into the land use land cover datasets. The freshwater wetlands delineations
in these data are for screening purposes only and are not regulatory. The Land Use Regulatory Program (LURP)
of the NJDEP determines the extent and final determination of freshwater wetlands in the State of New Jersey.