Water Damage in Sioux Falls, SD

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Water damage in Sioux Falls

In Sioux Falls, water damage often starts with cold: a pipe that freezes and bursts, or an ice dam that pushes melt water under shingles. Spring snowmelt and summer storms add their own share.

Burst pipes

NOAA's engineering weather data for Sioux Falls gives a 99% winter design temperature of −11°F and lists a 50-year frost depth of 102 inches. Pipes in exterior walls, over garages and in unheated spaces freeze in deep cold, and when they thaw, a split pipe floods the house. Know where your main shutoff is and shut it off first. Keep the heat on when you're away in winter, and ask someone to check the house.

Ice dams

NOAA lists about 75 freeze-thaw cycles a year and a 50-year ground snow load of 40 pounds per square foot. Ice dams at the eaves back water up under shingles and into ceilings and walls. Stains on ceilings near outside walls in late winter are a common sign.

Snowmelt and rain

NOAA lists a 100-year rainfall rate of 3.5 inches per hour. In spring, snowmelt and rain can overwhelm drainage and sump pumps, and basements take water. Check that your sump pump works before spring, and keep the discharge line clear of ice.

Storms

On the night of September 10–11, 2019, severe storms with straight-line winds of 80 to 100 mph and three brief EF-2 tornadoes struck Sioux Falls. Wind damage opens roofs and windows to rain. Tarp and board openings quickly to stop more water from getting in.

What a restoration company should do

Ask how quickly they can arrive and start removing water. Ask how they'll measure moisture in floors, walls and framing, and how they'll record drying each day. Ask what they'll remove and why. In winter, drying a house with cold, dry outdoor air works differently than in summer; ask how they'll manage heat and air movement.

Clean and dirty water

Water from a supply line starts clean but degrades over time. Sewer backups and flood water carry contamination, and porous materials they touch usually have to go. Ask how the company classifies your water.

Insurance

Call your insurer early and photograph damage before work starts. Ask the company for moisture readings, photos and an itemized list. Read any form before signing; some assign your claim to the contractor. You can choose your own company.

Before you hire

Get the estimate in writing and ask how billing works. Ask whether they handle rebuilding and, if so, which city licenses they hold for that work.

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Local facts behind this page

  • NOAA's engineering weather data for Sioux Falls lists a 50-year basic wind speed of 90 mph (3-second gust at 33 feet) and a 100-year rainfall rate of 3.5 inches per hour. Source: NOAA NCEI Engineering Weather Data (Sioux Falls, SD)
  • NOAA's engineering weather data for Sioux Falls lists an average of 75 freeze-thaw cycles a year, a 50-year frost depth of 102 inches and a 50-year ground snow load of 40 pounds per square foot. Source: NOAA NCEI Engineering Weather Data (Sioux Falls, SD)
  • NOAA engineering weather data for Sioux Falls (elevation 1,427 feet) gives a 1% summer design temperature of 91°F with a mean coincident wet-bulb temperature of 73°F, and a 99% winter design temperature of −11°F (−16°F at 99.6%). Source: NOAA NCEI Engineering Weather Data (Sioux Falls, SD)
  • On the night of September 10–11, 2019, a line of severe thunderstorms brought straight-line winds of 80 to 100 mph and considerable tree damage, and three brief EF-2 tornadoes touched down within Sioux Falls, damaging the Avera Health complex along 69th Street and the 41st Street commercial corridor. Source: NWS Sioux Falls, Sioux Falls Tornadoes – September 10, 2019

Sources checked 2026-10-26. Codes, rebates and standards change; the contractor you hire and your local building department have the final word on what applies to your property.

Before you hire in Minnehaha County

Get Flood Pros doesn't check contractors' credentials for you, so do it yourself before you sign anything: ask the City of Sioux Falls whether the contractor holds a current city license for the work and who will pull the permit. The City of Sioux Falls Contractor Licensing lookup is free: City of Sioux Falls Contractor Licensing.

  • Get the scope, price and timeline in writing before work starts.
  • Ask who pulls any required permit, and whether an inspection is part of the job.
  • Ask for proof of insurance and for references from recent local jobs, and call them.

Get help in Sioux Falls

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