FloodZoneMap.org

Flood — Hamlin, SD

Apr 7, 2001

Heavy rain of 1 to 3 inches combined with snowmelt runoff brought flooding to parts of northeast South Dakota. Many roads across Clark, Grant, Hamlin, Deuel, and Roberts counties were flooded and damaged. Floodwater moving towards the town of Willow Lake overpowered culverts and flooded several homes and several streets. Highway 28 had to be cut through to allow the water to flow away from the town, averting a disaster. Highwater from the creek west of Corona in far Southern Roberts county f

Source: NOAA National Weather Service Storm Events Database (event 5243757). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Hamlin, SD

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

View Hamlin County flood data →

More Flood Stories

Flood$202K damage

Hamlin, SD · Apr 1, 2019

The continuation of snowmelt from a much above normal snowfall winter combined with a historic heavy snow/blizzard in mid-April resulted in widespread flooding across central and northeast South Dakota.

Read the full account →
Flood$800K damage

Hamlin, SD · Apr 1, 2011

Snowmelt flooding in March continued across much of central and northeast South Dakota as the rest of the snowpack melted into early April. Many roads along with countless acres of crop and pastureland remained flooded.

Read the full account →
Flood

Hamlin, SD · Jul 27, 2025

An afternoon thunderstorm developed near the town of Henry and very quickly spun up a violent tornado. This tornado would cause significant damage to a farmstead before dissipating.

Read the full account →
Flood

Hamlin, SD · Aug 17, 2025

Brief but intense heavy rainfall from thunderstorms, on top of weeks of wet weather, resulted in additional flooding across Marshall, Hamlin, Codington, and Deuel counties starting on the 17th and persisting well into the 18th.

Read the full account →