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

Summary

Short name: 

GIS_ip30_info_townsvector

Abstract: 

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.

Citation Suggestion: 

Aldrich, S., Pontius, R. G., 2019. Individual Towns that are Fully or Partially in the Ipswich Watershed - Idrisi Vector File. Environmental Data Initiative. http://dx.doi.org/10.6073/pasta/fd5a099cdaaeb777a1487fc40837f900

Data set ID: 

266

EML revision ID: 

2

Data sources: 

GIS Data Archive Download: GIS_ip30_info_townsvector.zip

Vector file of town boundaries in Ipswich Watershed

Categories

PIE Research Areas: 

Keywords: 

GIS Section: 

Section: 

Dates

Date Range: 

Monday, January 1, 2001 to Monday, December 31, 2001

Publication Date: 

Thursday, August 1, 2019
People

Owner/Creator: 

Robert G. Pontius Jr.
Related
Downloads
Methodology

Methods: 

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