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Mapping Disclaimer

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CA/T Study Mapping Products Disclaimer Information

These maps are derived from output of the Boston Harbor Flood Risk Model (BH-FRM) for 2013, 2030, and 2070/2100 sea level rise and coastal storm simulations as described in the report MassDOT-FHWA Pilot Project Report: Climate Change and Extreme Weather Vulnerability and Adaptation Options for the Central Artery/Tunnel System (Pilot Project Report).

The maps represent Version 3 of the BH-FRM model output and include updates in four specific areas: Allston, Morrissey Boulevard, Prudential Tunnel (I-90/MassPike) and Muddy River. Additionally, minor data quality checks were performed throughout the domain resulting in minor changes from Version 2. As from time to time MassDOT will update the BH-FRM, the user is encouraged to revisit MassDOT’s website for up to date information.

For each of these three simulations, the model output is provided as three sets of maps:

  • (1) estimated coastal flood exceedance probabilities (CFEP)
  • (2) estimated flood depths for 1% CFEP
  • (3) estimated flood depths for 0.1% CFEP

Each map has been spatially interpolated and categorized into discrete intervals to facilitate visual interpretation. Locations near boundaries of a probability zone may or may not be within the probability zone due to mapping inaccuracies and interpolation between model nodes. Due to the nature of the project and BH-FRM development, nodal spacing varies. The maps interpolate the values between model nodes and create probabilities that may be inaccurate between model nodes. Therefore, care should be taken when using the maps to evaluate site-specific properties or locations. By accessing these maps, the user agrees with the terms herein and understands the limitations of the data provided.

The extent of these datasets is limited to the Central Artery and Tunnel (CA/T) project domain, including the Cities of Boston and Cambridge, Massachusetts. These datasets are provided without any guarantees or warranty. In association with the product, MassDOT makes no warranties of any kind, either express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, of title, or of noninfringement of third party rights. Use of these maps by a user is at the user’s risk. This information cannot be used for the purpose of boundary resolution or location. This information is not intended for use as a flood insurance determination, nor should it be directly related to FEMA FIRM maps or data since these data and FEMA data are for different purposes.

These datasets are provided for discussion and research purposes only. It is not appropriate to use these maps for detailed analysis (i.e., at the community or parcel level). Users should be aware that this dataset is interpolated from detailed results and is best used for planning and visualization purposes only. Users should not use these data for critical applications without a full awareness of their limitations.

Please see full Pilot Project Report for additional information on methodology and limitations.

By clicking the OK button below, the user acknowledges the proper use of the referenced Maps.

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