Downloaded from MassGIS, imported into ArcView 3.2 as ArcView shapefiles.
Edited to simplify drainage within wetlands, and to match orthophotos of the watershed as provided on MassGIS. Edited data was imported into IDRISI format, and extended to the Ipswich study area window. This layer contains information only in those cells included inside the towns mask, therefore is consistent with all other “info” category maps.
Process_Date: 200106
Information relevant to the GIS data encoding
This layer shows stream centerlines for the Ipswich Study area, based upon MassGISHorizontal Coordinate System Name:NAD 1983 StatePlane Massachusetts Mainland FIPS 2001
Datum: D North American 1983
Reference Ellipsoid: Name: GRS 1980 Semi Axis: 6378137.0
Meridian: Greenwich
Projection Name : Lambert Conformal Conic
Number of bands : 1
Raster Origin : Lower Left
Rows : 1152
Columns : 1692
Cell Geometry :pixel