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Des Moines, IA · Polk County

Water Risk Profile — ZIP 50313

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

Des Moines, Iowa faces spring snowmelt flooding that is among the most predictable annual flood events in the country. The Des Moines, Iowa, Cedar, and Mississippi rivers overflow their banks in most years after winter snowpack melts — the 2008 Iowa flood was a $10 billion disaster affecting Cedar Rapids and Iowa City. Polar vortex events reach Iowa with temperatures below -20°F that cause rapid pipe freezing in uninsulated exterior walls and crawl spaces. Iowa's clay-rich soils retain water against foundation walls, increasing basement flooding frequency after sustained rainfall. Iowa Insurance Division regulations require insurers to acknowledge claims within 10 working days.

Flood-prone areas: Birdland in north Des Moines sits directly in the Des Moines River floodplain and was among the hardest-hit neighborhoods during the 2008 Iowa flood, when the river crested at 28.1 feet — nearly 10 feet above flood stage — and inundated homes along Birdland Drive and Indianola Avenue with water that lingered for days. The Raccoon River corridor on Des Moines's west side regularly threatens properties in the Fleur Drive neighborhoods and Windsor Heights when the river rises above 23 feet at the Fleur Drive gauge, an event that typically occurs after heavy spring rainfall across western Iowa's agricultural watershed.

Insurance tip: Iowa homeowners should be aware that FEMA has revised flood maps throughout Polk County following the catastrophic 2008 flood, and some properties previously shown as low-risk now carry mandatory flood insurance requirements under Zone AE designations. Iowa's Office of the Commissioner of Insurance has actively promoted private flood insurance alternatives that offer better basement contents coverage than the NFIP's $10,000 limit — particularly valuable in Des Moines where finished basements are the norm in the area's ranch-style housing stock.

Water Category Cost Table — Des Moines, IA

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 Des Moines market (3.211/sq ft range).

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