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Springfield, IL · Sangamon County

Water Risk Profile — ZIP 62707

Flood risk, local cost data, climate factors, and insurance context for your ZIP code.

Flood Risk

medium-high

Cost Range

$1,900–$10,000

Avg Response

44 min

NFIP

State participates

Local Climate & Risk Factors

Springfield sits in central Illinois along the Sangamon River. Lake Springfield, the city's reservoir, creates recreational waterfront real estate with moderate flood risk. Spring Creek and Town Branch run through older neighborhoods. Significant portions of east Springfield lie in the Sangamon River 100-year floodplain. The city has a mix of well-maintained state government buildings and aging residential housing with deferred maintenance plumbing. Illinois clay soils (gleysols) cause chronic basement seepage and hydrostatic pressure issues throughout the region.

Flood-prone areas: East Springfield and areas near Sangamon River are highest flood risk. Westchester and Chatham (southwest suburb) are newer with better drainage. Capitol complex area has government-maintained infrastructure.

Insurance tip: Springfield homeowners in the Sangamon River floodplain (Zone AE) need NFIP coverage. Clay soil-driven basement seepage is not a covered event under standard insurance — waterproofing is a homeowner maintenance responsibility. Sewer backup riders are recommended given the older sewer infrastructure.

Water Category Cost Table — Springfield, IL

Extraction & drying cost per square foot by IICRC water category

Water Category$/sq ft
Category 1 — Clean

Burst supply line, clean appliance overflow

$3.23–$7.98
Category 2 — Gray

Dishwasher, washing machine, toilet bowl (no feces)

$7.98–$9.66
Category 3 — Black

Sewage backup, floodwater, toilet overflow with feces

$11.34–$14.3

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 Springfield market (3.813/sq ft range).

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