# Flood Warning: Hamlin, SD — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/1ee9436b373498cf

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-10 00:34 ingested 2026-07-10 09:26

[original source ↗](http://www.weather.gov/)

## extract

Flood Warning — Hamlin, SD
Severity: Severe. Certainty: Observed.
...The Flood Warning is extended for the following rivers in South
Dakota...

Big Sioux River Near Castlewood affecting Hamlin County.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Big Sioux River near Castlewood.

* WHEN...Until this afternoon.

* IMPACTS...At 9.0 feet, Water overtops the culvert on 184th Street
and significant agricultural flooding begins north of Castlewood.

* ADDITIONAL DETAILS...
- At 11:45 PM CDT Thursday the stage was 9.3 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 11:45 PM CDT Thursday was 9.3 feet.
- Forecast...The river is expected to fall below flood stage this
morning and continue falling to 5.6 feet early Tuesday afternoon.
- Flood stage is 9.0 feet.
- http://www.weather.gov/safety/flood

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.