Data File: ip30_info_dem.zip
Data stored in zip file, which includes GIS data and metadata (EML and FGDC)
Contact: Gil Pontius
Abstract: This datalayer is part of a group of layers used for research in the Ipswich River Watershed. This is Digital Elevation Model data for the study area, in a 30-meter grid. The source elevation tile data was provided on the MassGIS website www.state.ma.us/mgis/massgis.htm in ESRI-format shapefile format and imported into IDRISI software using the ShapeIdr command. The resulting vector elevation files were converted to raster format using successive Lineras macro commands. This has the effect of mosaicing the tiles as well. The raster image was filtered once using a low-pass (mean) filter, then masked to the Ipswich study area parameters (extent). This datalayer was produced as part of a research project concerning the Ipswich River Watershed.
Geographic Description: Ipswich River Watershed, Plum Island Ecosystem, Massachusetts
Data Format: Idrisi Raster File
Keywords: Ipswich River Watershed, Digital Elevation ModelUnited States, New England, Massachusetts, Ipswich River Watershed
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