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MDOT SHA 2015 Mean Higher High Water 1% Annual Chance (100 Year Storm) - Flood Depth Grid [Maryland]

ArcGIS Online for Maryland · 2015 Full Details

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Full Details

Title
MDOT SHA 2015 Mean Higher High Water 1% Annual Chance (100 Year Storm) - Flood Depth Grid [Maryland]
Description
Esri ArcGIS Online (AGOL) Imagery Layer which provides access to the MDOT SHA 2015 Mean Higher High Water 1% Annual Chance (100 Year Storm) - Flood Depth Grid data product. MDOT SHA 2015 Mean Higher High Water 1% Annual Chance (100 Year Storm) - Flood Depth Grid consists of a depth grid image service depicting conditions of mean higher high water based on the 1% annual chance (100 Year Storm) event for coastal areas throughout the State of Maryland in year 2015. This data product supports Maryland Department of Transportation State Highway Administration (MDOT SHA) leadership and planners as they endeavor to mitigate or prevent the impacts of sea level change resulting from land surface subsidence and rising sea levels. MDOT SHA 2015 Mean Higher High Water 1% Annual Chance (100 Year Storm) - Flood Depth Grid data was produced as a result of efforts by the Maryland Department of Transportation State Highway Administration (MDOT SHA), Eastern Shore Regional GIS Cooperative (ESRGC), Salisbury University (SU), United States Corps of Engineers (USACE), National Oceanic & Atmospheric Administration (NOAA), and the United States Geological Survey (USGS). The US Army Corps of Engineers provide the sea level change estimate. Sea level change is localized using water elevations collected from a qualifying National Oceanic and Atmospheric Administration (NOAA) tidal reference station - NOAA observations are transformed from tidal datum to North American Vertical Datum of 1988. A final correction for glacial isostatic adjustment and land creates an sea level change value for the official project year, 2015. MDOT SHA 2015 Mean Higher High Water 1% Annual Chance (100 Year Storm) - Flood Depth Grid data was task-based, and will only be updated on an As-Needed basis where necessary. For additional information, contact MDOT SHA OIT Enterprise Information Services: Email: GIS@mdot.maryland.gov
Creator
ArcGIS Online for Maryland
Temporal Coverage
2015
Date Issued
2019-10-08
Rights
This data is provided “AS IS” without warranty of any kind, either expressed or implied. The Maryland Department of Transportation assumes no responsibility for errors or omissions in this data or other documents which are referenced by or linked to this data. In no event shall the Maryland Department of Transportation (MDOT) be liable for any special, incidental, indirect, or consequential damages of any kind, or any damages whatsoever, including, without limitation, those resulting from loss of use, data or profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the user or performance of this information. This data could contain technical or other inaccuracies or typographical errors. The Maryland Department of Transportation (MDOT) may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time.
Access Rights
Public
Format
ArcGIS ImageMapLayer
Language
English
Date Added
August 10, 2025
Provenance Statement
The metadata for this resource was last retrieved from Maryland iMap on 2025-08-24.

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Cite and Reference

  • Citation
    ArcGIS Online for Maryland (2019). MDOT SHA 2015 Mean Higher High Water 1% Annual Chance (100 Year Storm) - Flood Depth Grid [Maryland]. . https://data.imap.maryland.gov/datasets/maryland::mdot-sha-2015-mean-higher-high-water-1-annual-chance-100-year-storm-flood-depth-grid (web service)
  • BTAA Geoportal Link

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