August 1996
This datalayer represents Offshore city and town boundaries for Massachusetts.
In ArcSDE are two layers - OFFSH80K_POLY and OFFSH80K_ARC.
The OFFSH80K_ARC attribute table contains the following items:
Codes are as follows:
This datalayer represents Offshore city and town boundaries for Massachusetts.
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OVERVIEW
This datalayer represents Offshore city and town boundaries for Massachusetts. The data are derived from 1:80,000 NOAA Charts and 1:24,000 USGS quadrangle maps of various dates. The coastline is the same as in the TOWNS_POLY and OUTLINE _POLY layers (1:100,000 USGS).In ArcSDE are two layers - OFFSH80K_POLY and OFFSH80K_ARC.
ATTRIBUTES
The OFFSH80K_POLY attribute table contains the following items:SEA | 0 and 1 |
TOWN_ID | Unique municipal identifier (from 1-351 Town ID List) |
The OFFSH80K_ARC attribute table contains the following items:
SOURCE | Source of arc and person digitizing. Arc source is either NOAA 1:80,000 charts or USGS 1:24,000 topographic quadrangle maps. |
TYPE | Numeric code for source |
Codes are as follows:
Type | Source |
0 | UNKNOWN |
1 | V. ANTIL, DFWELE, NOAA CHARTS |
2 | V. ANTIL, DFWELE, USGS 1:24,000 TOPO MAPS |
3 | D. WEAVER, MassGIS, 1:24,000 USGS TOPO MAPS |
4 | N. MACGAFFEY, CZM, USGS 1:24,000 TOPO MAPS |
5 | MISC SOURCES |
MAINTENANCE
MassGIS is maintaining the datalayer. No updates are planned. For more spatially-accurate coastline data see the Towns from Survey Points layer.
Last Updated 9/30/2008
Items
Contributor | |
---|---|
Modified Date | 2020-11-16 |
Release Date | 2018-12-27 |
Identifier | 9fa0f49d-c946-47e2-9c05-2e4fa3a35b28 |
Spatial / Geographical Coverage Location | Massachusetts |
License | |
Author | |
Contact Name | MassGIS |
Contact Email | |
Public Access Level | Public |
Data Quality | False |
Content Type | |
Language | English (United States) |