Direct answer
Is Onset, MA safe from flooding?
Onset has elevated flooding exposure. Risk is meaningful at 58/100, so planning and coverage checks are recommended.
City score
58/100
Level: elevated
P85-based state reference
58/100
Same hazard across MA.
Comparison
Onset is close to the state reference for this hazard (58 vs 58).
Why this answer
FEMA NFHL flood zones: 19 features intersect this tile.
This answer uses stored long-term hazard scores and the statewide reference. It does not describe current conditions. Open the separate live page for available weather and alert signals, and follow official watches, warnings, and emergency guidance.
Insurance pricing and deductible structure can still vary by neighborhood and carrier, so validate policy details against this risk profile.
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