Water Risk Profile — ZIP 48507
Flood risk, local cost data, climate factors, and insurance context for your ZIP code.
Flood Risk
Medium
Cost Range
$1,500–$8,500
Avg Response
42 min
NFIP
State participates
Local Climate & Risk Factors
Flint, Michigan's water damage risk is influenced by the Great Lakes on three sides, creating a lake-effect snow belt across the Upper Peninsula and western Lower Peninsula that deposits 100–200 inches of snow annually in heavy snow zones. This snowpack creates spring melt flooding that challenges drainage systems. Michigan's polar vortex events reach -20°F in most of the state, causing pipe bursts in uninsulated exterior walls. Southeast Michigan's combined sewer overflow issues made international news in 2021 when widespread basement flooding from a 3-inch rainfall event affected thousands of Detroit-area homes. Michigan's 2021 legislation addressed drainage infrastructure — but older system failures continue. Sewer backup endorsements are essential in Detroit's tri-county area.
Flood-prone areas: The Carriage Town historic district, situated on a terrace above but adjacent to the Flint River near downtown, has experienced both direct river flooding and sewer backup because its Victorian-era combined sewer system cannot handle modern storm volumes. The North End and Civic Park neighborhoods, built on relatively flat terrain along Thread Creek and Kearsley Creek tributaries, have high concentrations of aging housing stock with deteriorated waterproofing and are among the most flood-damaged zip codes in Genesee County.
Water Category Cost Table — Flint, MI
Extraction & drying cost per square foot by IICRC water category
| Water Category | $/sq ft |
|---|---|
| Category 1 — Clean Burst supply line, clean appliance overflow | $2.72–$6.74 |
| Category 2 — Gray Dishwasher, washing machine, toilet bowl (no feces) | $6.74–$8.16 |
| Category 3 — Black Sewage backup, floodwater, toilet overflow with feces | $9.59–$12.1 |
Estimates exclude reconstruction (drywall, flooring replacement). National benchmarks: Cat 1 $3.75–$4.25, Cat 2 $4.10–$6.50, Cat 3 $7–$7.50/sq ft — adjusted for Flint market (3.2–11/sq ft range).