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Baseline for the region of Cape Cod Bay, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1

Dates

Publication Date
Time Period
2021

Citation

Bartlett, M.K., Henderson, R.E., Farris, A.S., and Himmelstoss, E.A., 2021, Massachusetts shoreline change project, 2021 update —A GIS compilation of shoreline change rates calculated using Digital Shoreline Analysis System version 5.1, with supplementary intersects and baselines for Massachusetts: U.S. Geological Survey data release, https://doi.org/10.5066/P9YGIYFX.

Summary

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast by compiling a database of historical (mid 1800's-1989) shoreline positions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline 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 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from the National [...]

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Attached Files

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CapeCodBay_baseline_browse.PNG
“Baseline for the region of Cape Cod Bay”
thumbnail 2.73 MB image/png
Shapefile: CapeCodBay_baseline.zip
CapeCodBay_baseline.CPG 5 Bytes
CapeCodBay_baseline.dbf 970 Bytes
CapeCodBay_baseline.prj 145 Bytes
CapeCodBay_baseline.sbn 324 Bytes
CapeCodBay_baseline.sbx 132 Bytes
CapeCodBay_baseline.shp 16.5 KB
CapeCodBay_baseline.shx 268 Bytes

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

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