DisasterAWARE
7
Very High

flood Flood Risk in Boston, MA

Risk Level: Very High — Score 7/10

FEMA: 7Historical: 10

Live Flood alert status near Boston

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Live flood map around Boston

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Key Risk Factors

  • FEMA rates Boston's county as Relatively High risk
  • Estimated annual loss of $60M from this hazard type
  • Extensive history of significant events in this area
  • Active in the 12 months to Aug 9, 2026 (19 events)
  • Average annual frequency: 1.7 events per year

Peak season: March-September

Last significant event: Flood - Boston, MA--NH--RI Region, United States (2024-06-27) — 2,260,000 people exposed

Highest Risk Cities for Floods

1
New York, NY
FEMA: 9Historical: 10
2
Los Angeles, CA
FEMA: 9Historical: 10
3
Chicago, IL
FEMA: 9Historical: 10
4
Houston, TX
FEMA: 9Historical: 10
5
Phoenix, AZ
FEMA: 9Historical: 10
6
Philadelphia, PA
FEMA: 9Historical: 10
7
San Antonio, TX
FEMA: 9Historical: 10
8
San Diego, CA
FEMA: 9Historical: 10
9
Dallas, TX
FEMA: 9Historical: 10
10
San Jose, CA
FEMA: 9Historical: 10
Boston is not in the top 10 for flood risk among tracked cities.

How Boston Compares

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Notable Flood Events Near Boston

DisasterAWARE's historical archive records 5 notable flood events near Boston, ranked below by impact. The most impactful: Flood - Boston, MA--NH--RI Region, United States (June 2024) — 2,260,000 people exposed; $920,531M capital exposed.

Flood - Boston, MA--NH--RI Region, United States

June 27, 2024 — WARNING

2,260,000 people exposed; $920,531M capital exposed

Flood - Boston, MA--NH--RI Region, United States

July 29, 2023 — WARNING

Impact data not available

Flood - Boston, MA--NH--RI Region, United States

July 29, 2023 — WARNING

Impact data not available

Flood - Boston, MA--NH--RI Region, United States

July 25, 2023 — WARNING

Impact data not available

Flood - Boston, MA--NH--RI Region, United States

July 23, 2020 — WARNING

Impact data not available

Flood Preparedness Tips

  • 1.Know if your property is in a flood zone — check FEMA maps
  • 2.Consider flood insurance even if not in a high-risk zone
  • 3.Never drive through flooded roadways — Turn Around, Don’t Drown
  • 4.Move valuables and important documents to upper floors
  • 5.Install sump pumps and check valves in plumbing

Related Pages

earthquake
Earthquake Risk in Boston
Score: 5/10
wildfire
Wildfire Risk in Boston
Score: 1/10
hurricane
Hurricane Risk in Boston
Score: 7/10
tornado
Tornado Risk in Boston
Score: 5/10
winter-storm
Winter Storm Risk in Boston
Score: 7/10
landslide
Landslide Risk in Boston
Score: 1/10
extreme-heat
Extreme Heat Risk in Boston
Score: 7/10
drought
Drought Risk in Boston
Score: 0/10
high-wind
High Wind Risk in Boston
Score: 5/10
tsunami
Tsunami Risk in Boston
Score: 0/10
flood
Flood Risk in New York, NY
Score: 9/10
flood
Flood Risk in Philadelphia, PA
Score: 9/10
flood
Flood Risk in Baltimore, MD
Score: 7/10

How this data is built

Boston, MA flood risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live flood monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.

The data behind this page

Every score and event here comes from DisasterAWARE's hazard database — available as downloadable historical datasets and a real-time API.

Historical flood event data for Boston, MA — free dataset samples →Real-time flood alerts by API →

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