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Tidal Datums, Tidal Range, and Nuisance Flooding Levels for Chesapeake Bay and Delaware Bay

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Citation

Aretxabaleta, A.L., Defne, Z., Kalra, T.S., Blanton, B.O., and Ganju, N.K., 2021, Tidal datums, tidal range, and nuisance flooding levels for Chesapeake Bay and Delaware Bay: U.S. Geological Survey data release, https://doi.org/10.5066/P9G7KGBF.

Summary

This U.S. Geological Survey data release provides data on spatial variations in tidal datums, tidal range, and nuisance flooding in Chesapeake Bay and Delaware Bay. Tidal datums are standard elevations that are defined based on average tidal water levels. Datums are used as references to measure local water levels and to delineate regions in coastal environments. Nuisance flooding refers to the sporadic inundation of low-lying coastal areas by the maximum tidal water levels during spring tides, especially perigean spring tides (also known as king tides). Nuisance flooding is independent of storm event flooding, and it represents a cumulative or chronic hazard. The data were obtained by following a consistent methodology and at sufficient [...]

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Attached Files

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Tidal_Datum_Inundation_FEMA_R3.csv
“CSV file containing tidal fields”
153.11 MB text/csv
Tidal_Datum_Inundation_FEMA_R3.png
“Graphic showing maximum inundation by the tide in Delaware Bay”
thumbnail 6.99 MB image/png
Tidal_Datum_Inundation_Browse_AltText.docx
“Word document describing alternative text for graphic”
2.81 MB application/vnd.openxmlformats-officedocument.wordprocessingml.document

“Model output file stored in the cloud”
44.32 GB application/zip
Shapefile: Tidal_Datum_Inundation_FEMA_R3.zip
Tidal_Datum_Inundation_FEMA_R3.dbf 309.93 MB
Tidal_Datum_Inundation_FEMA_R3.sbn 13.67 MB
Tidal_Datum_Inundation_FEMA_R3.sbx 217.01 KB
Tidal_Datum_Inundation_FEMA_R3.cpg 5 Bytes
Tidal_Datum_Inundation_FEMA_R3.shp 45.43 MB
Tidal_Datum_Inundation_FEMA_R3.shx 12.98 MB
Tidal_Datum_Inundation_FEMA_R3.prj 145 Bytes

Purpose

The tidal datum, tidal range, and nuisance flooding data were created to be used in evaluating the spatial variation of the response and resiliency of coastal environments to tidal flooding.
Graphic showing maximum inundation by the tide in Delaware Bay
Graphic showing maximum inundation by the tide in Delaware Bay

Map

Spatial Services

ScienceBase WMS

ScienceBase WFS

Communities

  • USGS Data Release Products
  • Woods Hole Coastal and Marine Science Center

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9G7KGBF

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