MassGIS logo

MassGIS maintains a comprehensive, statewide database of spatial information for mapping and analysis supporting emergency response, environmental planning and management, transportation planning, economic development, and transparency in state government operations.

Visit the MassGIS website

Browse all MassGIS data layers

Other Access

The information on this page (the dataset metadata) is also available in these formats.

JSON RDF

via the DKAN API

MassGIS Data: USGS Digital Quadrangle Template

April 1993

The Digital Quadrangle Template is used as the index layer for the QUAD and QUAD2 libraries at MassGIS, which store1:25,000 U.S. Geological Survey's Digital Line Graph (DLG)-based data.

Download this layer
(ESRI Shapefile with ArcGIS .lyr and ArcView 3x .avl)

The Digital Quadrangle Template is used as the index layer for the QUAD and QUAD2 libraries at MassGIS, which store1:25,000 U.S. Geological Survey's Digital Line Graph (DLG)-based data. This digital quadrangle template comprises 211 quadrangles. The grid differs from the USGS Topographic Map Quadrangle Template, which is based on the 1:25,000 USGS 7.5 minute topographic quadrangles and used for paper maps. For most of Massachusetts, though, the paneling schemes are identical. The quadrangle panels and numbering scheme vary along the coast, primarily for the Cape and Islands quads. For details see the Index Map pdf
format of ix_quad.pdf
.

In ArcSDE the layer is named USGSGRID_POLY.

Production

The layer was created in coverage format by the ARC/INFO GENERATE command. Using the PROJECT command, the coverage was projected into Massachusetts State Plane Feet, NAD27. The coverage was then built and attributes added to the polygons to identify the digital quadrangles. One additional quad was added to the coverage for ease of processing some of the coastal data. This quadrangle (DIG-ID = 158-S), however, may not correspond to USGS DLG data.

Attributes

The polygon attribute table contains the two items to identify each quadrangle:
QUAD_NAME 25 25 C Quadrangle name
DIG_ID 5 C Quadrangle identifier; may have a -W,-E or other extension

Maintenance

This datalayer is being maintained by MassGIS.

Last Updated 5/31/2007

Items

Contributor
Modified Date
2018-01-19
Release Date
2018-01-19
Identifier
bdea0ca5-5a33-48d5-b726-d25db1cc2b4f
Spatial / Geographical Coverage Location
Massachusetts
License
Author
MassGIS
Contact Name
MassGIS
Contact Email
Public Access Level
Public
Data Quality
False
Content Type
Language
English (United States)