Largest scale when displaying the data: 1:100,000.
Paskevich, Valerie, 2003, MJWATER: Major Water of the Long Island Sound GIS project area: Open-File Report 2005-1018, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
McMullen, K.Y., Poppe, L.J., Paskevich, V.F., Doran, E.F., Moser, M.S., Christman, E.B., and Beaver, A.L, 2005, Surficial Geologic Interpretation and Sidescan Sonar Imagery of the Sea Floor in West-Central Long Island Sound: Open-File Report 2005-1018, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
Names for the features.
| Range of values | |
|---|---|
| Minimum: | 0.00 |
| Maximum: | 0.121 |
| Resolution: | .001 |
| Range of values | |
|---|---|
| Minimum: | 0.00 |
| Maximum: | 16.758 |
| Resolution: | .001 |
GDT Dynamap.
909-793-2853 (voice)
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info@esri.com
Outside the United States: Please direct all inquiries regarding software/data pricing, sales, support, and consulting services to your local ESRI International Distributor. This information can be found at <http://gis.esri.com/intldist/contactint.cfm>.
For other questions or comments, you may contact ESRI headquarters by e-mail, telephone, or fax or write to us.
U.S. Major Water provides thousands of named major water areas such as bays, canals, lakes, reservoirs, and large rivers. U.S. Major Water is detailed enough for geographic display at local, regional, and national levels.
Geographic Data Technology, Inc., 199710, Dynamap/2000 v7.3: Dynamap/2000® v7.3, Geographic Data Technology, Inc, Lebanon, New Hampshire, USA.
Geographic Data Technology, Inc., 199901, Dynamap/2000 v9.0: Dynamap/2000® v9.0, Geographic Data Technology, Inc, Lebanon, New Hampshire, USA.
Geographic Data Technology, Inc., 200001, Dynamap/2000 v10.0: Dynamap/2000® v10.0, Geographic Data Technology, Inc., Lebanon, New Hampshire, USA.
Data sources produced in this process:
Data sources used in this process:
Person who carried out this activity:
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov
Data sources produced in this process:
The geospatial part of this data set was extracted from the 1990 Census Version TIGER/Line - files (CD-ROM edition). To improve the shape accuracy, GDT ran a process to identify irregular features and give them more accurate shapes. It was then generalized to a tolerance of 27 feet. Due to the processing, the positional accuracy in unknown but close to the original TIGER/line files of +/- 167 feet approximately.
The positional accuracy of the TIGER/Line coordinates varies with the source materials used but at best meets the established National Map Accuracy standards (+/- 167 feet approximately) where 1:100,000-scale maps from the USGS are the source. The Census Bureau cannot specify the accuracy of feature updates added by its field staff or of features derived from the GBF/DIME-Files or other map sources. Thus, the level of positional accuracy in the TIGER/Line files is not suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface.
After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.
No duplicate features are present. The shapefile is exported using Avenue request ExportClean. This request verifies and enforces the correctness of shapes.
Are there legal restrictions on access or use of the data?
- Access_Constraints: Access granted to Licensee only.
- Use_Constraints:
- The data are provided by multiple, third party data vendors under license to ESRI for inclusion on ESRI Data & Maps CD-ROMs for use with ESRI® software. Each data vendor has its own data licensing policies and may grant varying redistribution rights to end users. Please consult the redistribution rights below for this data set provided on ESRI Data & Maps CD-ROMs. As used herein, "Geodata" shall mean any digital data set consisting of geographic data coordinates and associated attributes.
The redistribution rights for this data set: Redistribution rights are granted by the data vendor for hard-copy renditions or static, electronic map images (e.g. .gif, .jpeg, etc.) that are plotted, printed, or publicly displayed with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable with a Value-Added Software Application developed by ESRI Business Partners on a royalty-free basis with proper metadata and source/copyright attribution to the respective data vendor(s).
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov
Downloadable Data
Although this derived data set and it's lineage dataset have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.
| Data format: | The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). in format SHP (version 3.2) ESRI polygon shapefile Size: 6.113 |
|---|---|
| Network links: |
<http://pubs.usgs.gov/of/2005/1018/data/basemaps/usa/water/mjwater.zip> |
| Media you can order: |
DVD-ROM
(Density 4.75
Gbytes)
|
These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of the importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov
