FloodZoneMap.org

Flood — Hanson, SD

Apr 18, 2023

Rapid snowmelt from a few day period of well above normal temperatures focused on the 11-13th of April resulted in moderate to locally major flooding through much of the James River Basin. Some areas north of I-90 lost between 2 to 5 inches of snow water equivalent (SWE) from the first to second week of April, but antecedent drought conditions resulted in only a percentage of this water actually making it into the river system.

Source: NOAA National Weather Service Storm Events Database (event 1091981). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Hanson, SD

This event is one of many recorded floods in Hanson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Hanson County flood data →

More Flood Stories

Flood$251K damage

Hanson, SD · Jun 20, 2024

A multi-day significant heavy rainfall event from June 20-22 resulted in widespread rain totals between 5 and 10 inches with pockets in excess of 15 inches across portions of southeast South Dakota, northwest Iowa, and southwest Minnesota.

Read the full account →
Flood$510K damage

Hanson, SD · Sep 11, 2019

A frontal zone remained locked in place under southwest flow aloft as a series of mid-level waves moved across the region over a three day period.

Read the full account →
Flood$150K damage

Hanson, SD · Mar 13, 2019

Rainfall of one to three inches on frozen ground and into a snow pack with between 2 and 5 inches of liquid water equivalent resulted in considerable overland flooding.||One of the hardest hit areas was around Yankton, where a No Travel Advisory was issued for the city on March…

Read the full account →
Flood$500K damage

Hanson, SD · Apr 1, 2011

Major flooding of the James River, other streams, lakes, and general flooding, which began with a rapid March snowmelt, continued through April. Water levels with the more general areal flooding were at the highest at the start of April.

Read the full account →