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Name: Vulnerable areas (<5 ft GWD) with 1 foot of SLR

Display Field: id

Type: Feature Layer

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Description: Groundwater modeling was used to simulate the effects of sea-level rise on groundwater levels in the New Hampshire Seacoast. The MODFLOW-USG Transport model (Panday, 2022) was used to simulate groundwater flow and saltwater intrusion in these communities. This map shows vulnerable areas where the groundwater depth is currently less than 5 ft. The colors show the projected magnitude of groundwater rise under 1 ft of sea-level rise. Shallow and surface infrastructure, including pavements in these areas, is the most vulnerable to rising groundwater from sea-level rise and from heavy rainfall events.

Service Item Id: 24b6da19a2bc406e984cdf279330d9f3

Copyright Text: Jayne F. Knott, Ph.D. of JFK Environmental Services LLC and Jennifer M. Jacobs, Ph.D. of Jennifer M. Jacobs & Associates LLC. This work was funded by the NH Department of Environmental Services.

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• Name: Vulnerable areas (<5 ft GWD) with 1 foot of SLR
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