Individual Towns that are Fully or Partially in the Ipswich Watershed - Idrisi Vector File.


This datalayer is part of a group of layers used for research in the Ipswich River Watershed. This layer includes the area within each town in the Ipswich River Watershed in vector form. This map contains complete information and was derived from the ip30_noinfo_towns layer.

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To show area within the towns the make up the Ipswich River Watershed study area.

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Edit town boundary vector polygon to include only polygons within our Ipswich Study Area. Import edited vector polygon into Idrisi 32 Release 2. Rasterize with POLYRAS module. Remove “no information” category using a reclass. Vectorize using POLYVEC module.

Process_Date: January 2002


Information relevant to the GIS data encoding

Vector file of town boundaries in Ipswich WatershedHorizontal 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


Progress: Complete. Maintenance and Update Frequency: None Planned. Edition: First

Metadata converted from MSWord documentation on 1.15.2013 by M. Hayn using "PIE_WordMetaConvert" package developed for conversion of data to EML 2.1.0 in R environment.

8/1/2019 corrected lat/long inversion for Ipswich Watershed boundary box.



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