October 22, 2021


Weekend Rains Cause Flood Issues


Last weekend rains brought flooding to area rivers once again.  The city of Brookings picked up 1.32 inches of rain and in Madison 1.88 inches of rain was received.  Lesser amounts of rain was recorded in Sioux Falls with 0.67 inches and in Mitchell with 0.51 inches.

Up towards the north in Hamlin County, 2.23 inches of rain fell in Hayti and in Grant County street flooding occurred in Milbank who received 1.70 inches.

The Big Sioux River located just outside of Castlewood in Hamlin County went from 7.56 feet on August 17th at 5:15pm to 10.11 feet on August 19th at 4:30am.  At this location, flood stage starts at 9 feet.

Downstream near Brookings, the Big Sioux River was sitting at 7.49 feet at 8:30pm on August 17th and then jumped to 10.21 feet at 2:30pm on August 20th, almost reaching moderate flood stage.

Luckily with drier weather during the work week, the Big Sioux River has dropped under flood stage once again.