Online Links:
Online Links:
Range of values | |
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Minimum: | 0 |
Maximum: | 6579 |
Units: | none |
Range of values | |
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Minimum: | 185.979591105 |
Maximum: | 1446641.95436 |
Units: | m^2 |
Range of values | |
---|---|
Minimum: | 0.0 |
Maximum: | 1257718.49982 |
Units: | m^2 |
Range of values | |
---|---|
Minimum: | -1.8881 |
Maximum: | 7.4295 |
Units: | meters |
Range of values | |
---|---|
Minimum: | -1.049032 |
Maximum: | 8.671375 |
Units: | meters |
Range of values | |
---|---|
Minimum: | 0 |
Maximum: | 1 |
Units: | none |
Range of values | |
---|---|
Minimum: | 0 |
Maximum: | 1 |
Units: | none |
Range of values | |
---|---|
Minimum: | -8.8776 |
Maximum: | 7.92619 |
Units: | none |
Range of values | |
---|---|
Minimum: | 0.009983 |
Maximum: | 99.8945 |
Units: | none |
Range of values | |
---|---|
Minimum: | -11010 |
Maximum: | 0 |
Units: | none |
The purpose of this shapefile is to calculate the mean elevation for each marsh unit and its vegetated component. Analysis of marsh elevation is part of a comprehensive assessment to identify the factors and their weights in determining the vulnerability and resiliency of salt marshes. Elevation distribution in Massachusetts salt marshes is given in terms of mean elevation of conceptual marsh units. The elevation data is based primarily on the 1-meter resolution Coastal National Elevation Database (CoNED), as well as a 1-meter resolution USGS DEM, and the 1/9- arc-second resolution USGS National Elevation Dataset (NED).
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Are there legal restrictions on access or use of the data?Access_Constraints: None
Use_Constraints:The mean elevation for each marsh unit is defined for scientific research purposes and should not be used as a sole source of reference for any regulations and policy making. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the source of this information.
Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Not for navigational use.
Data format: | This dataset contains a polygon shapefile and its components and metadata in xml format. in format shapefile (version ArcGIS 10.7.1) |
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Network links: |
https://www.sciencebase.gov/catalog/file/get/60f9932ed34e3ccd82fe3fcb https://www.sciencebase.gov/catalog/item/60f9932ed34e3ccd82fe3fcb https://doi.org/10.5066/P97E086F |
Data format: | WMS |
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Network links: |
https://www.sciencebase.gov/catalogMaps/mapping/ows/60f9932ed34e3ccd82fe3fcb?service=wms&request=getcapabilities&version=1.3.0 |
Data format: | WFS |
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Network links: |
https://www.sciencebase.gov/catalogMaps/mapping/ows/60f9932ed34e3ccd82fe3fcb?service=wfs&request=getcapabilities&version=1.0.0 |