Flood Zones: Cambridge vs Lowell
How do flood zones rules compare between Cambridge, MA and Lowell, MA?
Cambridge and Lowell have similar restriction levels.
Cambridge, MA
Middlesex County
Cambridge participates in the National Flood Insurance Program and enforces a Flood Plain Overlay District covering FEMA Special Flood Hazard Areas along the Charles River and Alewife Brook.
View full Cambridge rules →Lowell, MA
Middlesex County
Lowell lies along the Merrimack and Concord Rivers with extensive FEMA Special Flood Hazard Areas, and all construction in those zones must meet the Massachusetts Floodplain Overlay and NFIP standards.
View full Lowell rules →Key Facts Comparison
| Fact | Cambridge | Lowell |
|---|---|---|
| Program | NFIP participant | - |
| Main flood areas | Charles, Alewife | - |
| Elevation | Above BFE plus freeboard | - |
| Insurance | Required for SFHA mortgages | Required in SFHA |
| Future risk | Climate Vuln Assessment | - |
| Primary river | - | Merrimack River |
| Freeboard | - | 1 foot above BFE |
| Historic floods | - | 1936, 1987, 2006, 2007 |
Highlighted rows indicate differences between cities.
Cambridge FAQ
Is my Cambridge property in a flood zone?
Check the FEMA Map Service Center and the Cambridge GIS portal using your address to see FEMA zone designation.
Do I need flood insurance?
Federally-backed mortgages in SFHAs require flood insurance; it is recommended even in moderate-risk areas.
Lowell FAQ
How do I check if my Lowell property is in a flood zone?
Use the FEMA Flood Map Service Center at msc.fema.gov and enter your address; also confirm with Lowell Development Services.
Can I build an addition in a Lowell flood zone?
Yes if it meets the Floodplain Overlay standards including elevation above BFE plus 1 foot of freeboard and flood-resistant materials.
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