These are land use/land cover maps downloadable as zipped image files (.img) for use with ERDAS Imagine. These 12 watersheds are all located in southeastern Pennsylvania and were the basis of the study from which the modules were developed. Each map has 6 land classes:

1 = dense development
2 = less dense development
3 = bare land
4 = forest
5 = vegetated
6 = water

The maps were generated using a supervised classification scheme with multi-spectral Landsat TM images. "Dense development" typically represents downtown areas, commercial development and major roads. "Less dense development" typically represents residential areas. These distinctions were made by eye, not based on impervious surface measurements. Both of these developed classes can be combined as urban for the SLEUTH model, while "bare land" and "vegetated" can be lumped together as agriculture. All images are at 25-meter spatial resolution with a UTM map base (spheroid Clarke 1866, datum NAD27, zone 18). As with any of this work, questions should be addressed to tnc@essc.psu.edu.

Chester Creek June 10, 1987 (zipped 61KB)
Chester Creek June 21, 1997 (zipped 61KB)

Conestoga River June 25, 1987 (zipped 189KB)
Conestoga River July 11, 1996 (zipped 230KB)

Crum Creek June 10, 1987 (zipped 19KB)
Crum Creek June 21, 1997 (zipped 18KB)

Darby Creek June 10, 1987 (zipped 10KB)
Darby Creek June 21, 1997 (zipped 9KB)

Letort Spring Run June 25, 1987 (zipped 24KB)
Letort Spring Run July 11, 1996 (zipped 24KB)

Little Conestoga June 25, 1987 zipped 8KB
Little Conestoga July 11, 1996 zipped 8KB

Marsh Creek (above) June 10, 1987 zipped 10KB
Marsh Creek (above) June 21, 1997 zipped 10KB

Marsh Creek (below) June 10, 1987 zipped 19KB
Marsh Creek (below) June 21, 1997 zipped 22KB

Paxton Creek June 25, 1987 zipped 15KB
Paxton Creek July 14, 1997 zipped 15KB

Poquessing Creek August 26, 1986 zipped 25KB
Poquessing Creek June 21, 1997 zipped 25KB

Skippack Creek June 10, 1987 zipped 49KB
Skippack Creek June 21, 1997 zipped 50KB

White Clay Creek June 10, 1987 zipped 92KB
White Clay Creek July 11, 1996 zipped 101KB