July 1998
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Overview

Sample of Aqueducts
Click to see the full size image.

 

The Aqueducts layer comtains linework representing water-transporting conduits from 1:100,000 U.S. Geological Survey Digital Line Graph (DLG) files, with additional linework added by the Massachusetts Water Resources Authority. In ArcSDE the layer is named AQUEDUCTS_ARC. Annotation for MWRA aqueducts is stored as AQUEDUCTS_ANNO_DESC.

Methodology

USGS DLG files were converted to ArcInfo coverage format. MWRA staff digitized additional aqueduct linework and created annotation.

Attributes

This datalayer's arc attribute table has the following attributes:
  PIPE TRANSMISSION = MWRA PIPE
X = Non-MWRA pipe
  TYPE G = Above-ground pipe
P = Below-ground pipe
X = Non-MWRA pipe
  NAME Name of pipe

Maintenance

MassGIS maintains this layer. No updates are planned.

Last Updated 7/22/2004