Individual Towns that are Fully or Partially in the Ipswich and Parker River Watersheds - Idrisi Raster File.


This datalayer is part of a group of layers used for research in the Ipswich River Watershed. This layer was created in July 2006 for Marine Biological Laboratory (MBL) in Woods Hole. This layer shows the boundaries for the towns in the Ipswich River Watershed and the Parker River Watershed. This data layer was created so that the town boundaries would correspond to the boundaries of the corresponding land use maps. This datalayer has complete information. Display town boundaries for the study area.

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In ArcMap, towns within our study area were selected from LANDUSE and a new layer was created from this selection. Towns were selected by attribute,
based on their Town_ID code. The following Town_IDs were selected: 9, 30, 31, 38, 48, 71, 92, 105, 116, 119, 144, 164, 184, 205, 206, 210, 213, 229,
246, 254, 295, 320, 298, 324, 342, and 347. The selected features were then exported as a new layer, TOWNSFROMLU.

The land use map of the study area was imported into Idrisi Kiliminjaro and converted to a raster file. After importing TOWNSFROMLU, the data base file was opened and the field TILE_NAME was exported to a raster image.

The map was reclassified so that the towns were assigned numbers from 1 to 26, replacing the previous values, which ranged from 9 to 347.

Process_Date: 200607


Information relevant to the GIS data encoding

This layer identifies town boundariesHorizontal 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


Progress: Complete. Maintenance and Update Frequency: As needed. Edition: 1st

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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