Clark University (GIS)

There are two faculty members at Clark University who are members of the PIE research team. They are Robert Gilmore Pontius Jr (rpontius@clarku.edu) and Colin Polsky (cpolsky@clarku.edu). Since 1999, Pontius and his students have been creating GIS-based methods for land change prediction. They develop novel techniques of model validation and land change assessment. Much of their work can be found at www.clarku.edu/~rpontius. Most of the maps below were obtained from the Massachusetts Geographic Information System and formatted to facilitate simulation modeling of changes among land cover types over time. Future scenarios of land change are used to make scenarios of nutrient loading. Polsky and his students study the vulnerability of human populations to the possible over-exploitation of water and land.

Clark University GIS data for the Ipswich and Parker River watershed have been developed in IDRISI with most files raster based. Many will open using ArcGIS 10.x; please contact us if you have questions.
Updated June, 2013: Files are now downloadable in zip files which include all necessary GIS files, original FGDC metadata Word documents, and EML-compliant metadata in XML format.

Clark GIS Data (Ipswich Watershed):

GIS_ip30_info_anderson1_1971- Land Use, Anderson Level I - Ipswich Watershed - 1971 - Idrisi Raster File
GIS_ip30_info_anderson1_1985- Land Use, Anderson Level I - Ipswich Watershed - 1985 - Idrisi Raster File
GIS_ip30_info_anderson1_1991- Land Use, Anderson Level I - Ipswich Watershed - 1991 - Idrisi Raster File
GIS_ip30_info_anderson1_1999- Land Use, Anderson Level I - Ipswich Watershed - 1999 - Idrisi Raster File
GIS_ip30_info_aspect- Topography Aspect - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_dem- Digital Elevation Model - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_hydrology- Hydrology - Stream Centerlines - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_nutrientsamplesites- Nutrient Sample Sites - Ipswich Watershed - 1999 through 2002 - Idrisi Raster File
GIS_ip30_info_open_protection- Level of Protection for Areas Designated Protected and Open Space - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_open_purpose- Primary Use of Open Space and Protected Land - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_open_status- Status and Custodianship of Designated Open Space - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_roads- Roads: Location and Type - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_slope- Topography, Slope - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_townmask- Single Mask File of All Towns that are Fully or Partially in the Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_towns- Individual Towns that are Fully or Partially in the Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_townsvector- Individual Towns that are Fully or Partially in the Ipswich Watershed - Idrisi Vector File
GIS_ip30_info_wetlands- Wetland Areas - Ipswich Watershed - Idrisi Raster File
GIS_ip30_info_window- Boundaries of the designated Ipswich Watershed Study Area - Idrisi Raster File

Clark GIS Data (Ipswich & Parker Watersheds):

GIS_p_arc_vector_01- Compilation of Land Use Data in 21 and 37 Category Classifications - Ipswich and Parker River Watersheds - 1971, 1985, 1991, and 1999 - Vector Shapefile
GIS_p_landuse7_1971_01- Land Use, Anderson Level I, 7 Categories - Ipswich and Parker River Watersheds - 1971 - Idrisi Raster File
GIS_p_landuse7_1985_01- Land Use, Anderson Level I, 7 Categories - Ipswich and Parker River Watersheds - 1985 - Idrisi Raster File
GIS_p_landuse7_1991_01- Land Use, Anderson Level I, 7 Categories - Ipswich and Parker River Watersheds - 1991 - Idrisi Raster File
GIS_p_landuse7_1999_01- Land Use, Anderson Level I, 7 Categories - Ipswich and Parker River Watersheds - 1999 - Idrisi Raster File
GIS_p_landuse21_1971_01- Land Use, 21 Categories - Ipswich and Parker River Watersheds - 1971 - Idrisi Raster File
GIS_p_landuse21_1985_01- Land Use, 21 Categories - Ipswich and Parker River Watersheds - 1985 - Idrisi Raster File
GIS_p_landuse21_1991_01- Land Use, 21 Categories - Ipswich and Parker River Watersheds - 1991 - Idrisi Raster File
GIS_p_landuse21_1999_01- Land Use, 21 Categories - Ipswich and Parker River Watersheds - 1999 - Idrisi Raster File
GIS_p_landuse37_1985_01- Land Use, 37 Categories - Ipswich and Parker River Watersheds - 1985 - Idrisi Raster File
GIS_p_landuse37_1991_01- Land Use, 37 Categories - Ipswich and Parker River Watersheds - 1991 - Idrisi Raster File
GIS_p_landuse37_1999_01- Land Use, 37 Categories - Ipswich and Parker River Watersheds - 1999 - Idrisi Raster File
GIS_p_mask_01- Boundaries of the designated study area - Ipswich and Parker River Watersheds - Idrisi Raster File
GIS_p_mask_vector_01- Boundaries of the designated study area - Ipswich and Parker River Watersheds - Idrisi Vector File
GIS_p_towns_01- Individual Towns that are Fully or Partially in the Ipswich and Parker River Watersheds - Idrisi Raster File
GIS_p_towns_vector_01- Individual Towns that are Fully or Partially in the Ipswich and Parker River Watersheds - Idrisi Vector File
GIS_p_watersheds_01- Boundaries of the Ipswich River and Parker River Watersheds - Idrisi Raster File