Portsmouth’s Tidebound Future

Added: 2026-04-29

[00:00:00]In Portsmouth, New Hampshire, flood risks aren't just storms. They hinge on tides, sediment, and aging harbor walls.

[00:00:07]This coastal town has reinforced piers, elevated utilities, and new flood maps getting zoning while communities adapt to higher water.

[00:00:16]Local engineers track every ingress point where seawater could intrude, balancing historic homes with modern barriers and insurance costs.

[00:00:24]Despite the precautions, small businesses still face disruption during seasonal high tides, highlighting resilience and limits of planning.

[00:00:33]As climate trends push water higher, Portsmouth asks what the next generation of coastal towns must learn to survive.