The Future is Now
December 23, 2022 Winter Storm: Summary of Impacts
Tools
1. Live map of projected sea level rise in Coastal NH Region
2. Flooding Impact reporter survey
3. Real-time map of flooding reports
Resources for more information
There are many resources to explore flooding and scenarios in the Seacoast area of NH, past and present:
Tide Gauges:
Studies:
New Hampshire Sea-Level Rise, Storm Surge, and Groundwater Rise Mapper (Sea-Level Rise Mapper) is intended to provide easy access to future coastal inundation scenarios. The mapper is a screening tool for planning purposes, and sites of interest should be further evaluated with a site-based survey. Data on the mapper is provided by New Hampshire GRANIT.
New Hampshire Coastal Flood Risk Summary – Part 1: Science (2019) provides a synthesis of the state of the science relevant to coastal flood risks in New Hampshire. ( Video summary )
New Hampshire Coastal Flood Risk Summary – Part II: Guidance for Using Scientific Projections (2020) provides science-based and user-informed guiding principles and a step-by-step approach for incorporating the updated coastal flood risk projections from “Part I: Science” into private, local, state, and federal projects, including planning, regulatory and site-specific efforts. ( Video summary )
Seacoast Transportation Corridor Vulnerability Assessment (2022) purpose is to enhance regional coordination in New Hampshire for transportation networks vulnerable to sea-level rise and other coastal hazards in order to maximize information sharing, identify opportunities to fill data gaps, and develop shared understanding of options for future transportation planning.
State of New Hampshire Multi-Hazard Mitigation Plan (2018), NH Department of Homeland Security and Emergency Management.“All of New Hampshire is susceptible to the effects of climate change and has already begun to experience impacts including, but not limited to, an increased frequency of coastal flooding, inland flooding events caused by extreme precipitation, and increased average annual temperature.”
TIDES TO STORMS: Assessing Risk and Vulnerability to Sea-level rise and Storm Surge (2015) , assessed the vulnerability of coastal municipalities and public infrastructure to flooding from expected increases in storm surge and rates of sea-level rise. Individual vulnerability assessments for several coastal municipalities - Seabrook, Hampton Falls, Hampton, North Hampton, Rye, New Castle and Portsmouth - were developed as a component of this project.
Climate Risk in the Seacoast (C-RiSe): Assessing Vulnerability of Municipal Assets and Resources to Climate Change (2017) provided Great Bay municipalities – Exeter, Newfields, Stratham, Greenland and Newington - with maps and assessments of flood impacts to road and transportation assets, critical facilities and infrastructure, and natural resources associated with projected increases in storm surge, sea level and precipitation.
