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Baseline for the northern coast of Nantucket, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.0

Dates

Publication Date

Citation

Himmelstoss, E.A., Farris, A.S., Weber, K.M., and Henderson, R.E., 2019, Massachusetts shoreline change project, 2018 update–A GIS compilation of shoreline change rates calculated using Digital Shoreline Analysis System version 5.0, with supplementary intersects and baselines for Massachusetts (ver. 2.0, August 2019): U.S. Geological Survey data release, https://doi.org/10.5066/P9RRBEYK.

Summary

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. The shoreline position and change rate are used to inform management decisions regarding the erosion of coastal resources. In 2001, a shoreline from 1994 was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013, two oceanfront shorelines for Massachusetts were added using 2008-9 color aerial orthoimagery and 2007 topographic lidar datasets obtained from the National Oceanic and Atmospheric Administration's Ocean Service, Coastal Services Center. This 2018 data release includes rates that incorporate two new mean [...]

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Attached Files

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Nantucket_baseline_north.shp.html 57.55 KB text/html
Nantucket_baseline_north.shp.txt 23.08 KB text/plain
Shapefile: Nantucket_north_baseline.zip
Nantucket_north_baseline.cpg 5 Bytes
Nantucket_north_baseline.dbf 650 Bytes
Nantucket_north_baseline.prj 145 Bytes
Nantucket_north_baseline.sbn 260 Bytes
Nantucket_north_baseline.sbx 132 Bytes
Nantucket_north_baseline.shp 11.18 KB
Nantucket_north_baseline.shx 204 Bytes
Nantucket_north_baseline_browse.png thumbnail 51.05 KB

Purpose

This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics. This baseline layer serves as the starting point for orthogonally-oriented transects generated by the DSAS application. The transects intersect each shoreline and establish measurement points used to calculate shoreline-change rates.

Additional Information

Shapefile Extension

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