The sea level off New Hampshire’s coast is up to 7 inches higher than it was in 1950.1 This increase is mostly due to changes in ocean circulation2 Solutions can be complicated because a lot of important infrastructure on the coast is shared by both city and state, so mitigation efforts will need to be coordinated.3 There are already over 2,544 properties at risk from from tidal flooding in NewHampshire.4 The state is planning over $600,000 in sea level rise solutions, which include restoration projects, research and outreach, flood prevention for roads, and fortifying coastal wetlands.
Sea level rise is speeding up
The sea level around nearby Boston, Massachusetts, has risen by around 7 inches since 1950. Its speed of rise has accelerated over the last ten years and it’s now rising by about 1 inch every 10 years.1 Scientists know this because the sea level is measured every 6 minutes using equipment like satellites, floating buoys off the coast, and tidal gauges to accurately measure the local sea level as it accelerates and changes.5
Sea level measurement from Boston area tide gauge since 1950