“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Flandreau in Moody County, South Dakota — The American Midwest (Upper Plains)


April 20, 1969

Flandreau Marker image. Click for full size.
October 8, 2022
1. Flandreau Marker
Inscription.  On this day, river stages on the Big Sioux River reached 17.8 feet, 3.6 feet higher than the previous record of 14.2 feet in June 1957. The winter's record snowfall in Eastern South Dakota began melting and pouring into the Big Sioux River. The snowmelt runoff was more than the Big Sioux River or even many of its tributaries could handle. The runoff broke several all-time records with water leaving the main river channel and flooding several locations in Moody County.

Within 24 hours, water was pounding over the dam east of the Crescent Street bridge on the northern edge of town.

Roads crossing the Big Sioux River and some of its tributaries became impassable. Roads east and west out of Flandreau were closed.

Residents in the Egan area were evacuated.

In the days that followed, the National Guard was called into action filling sandbags and helping city crews build temporary levees to protect the wastewater treatment plant, one of the city's wells and pump house.

Historical Marker
Learn more about South Dakota's flood history at
Flandreau Marker at the Moody County Museum image. Click for full size.
October 8, 2022
2. Flandreau Marker at the Moody County Museum
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Jackets brings together federal, state, and local agencies to collaborate in reducing flood risk. Prepare your family at

Erected by Silver Jackets.
Topics. This historical marker is listed in these topic lists: DisastersEnvironmentWaterways & Vessels. A significant historical date for this entry is April 20, 1969.
Location. 44° 2.919′ N, 96° 34.928′ W. Marker is in Flandreau, South Dakota, in Moody County. Marker is on Water Street north of East Pipestone Avenue, on the left when traveling north. Located at the Moody County Museum in Flandreau. Touch for map. Marker is at or near this postal address: 706 E Pipestone Ave, Flandreau SD 57028, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies. Jones School District #60 (within shouting distance of this marker); Chicago, Milwaukee & St. Paul Depot (within shouting distance of this marker); Riverbend Meeting House (within shouting distance of this marker); Waxdahl Claim Shack (within shouting distance of this marker); In Memory of Mrs. Joseph Thatcher (approx. 0.8 miles away); Flandreau Indian High School (approx. 1.1 miles away); Governor Bill Janklow (approx. 1.2 miles away); Wakpaipaksan Okodakiciye (approx. 1.4 miles away). Touch for a list and map of all markers in Flandreau.
Credits. This page was last revised on October 20, 2022. It was originally submitted on October 20, 2022. This page has been viewed 53 times since then and 2 times this year. Photos:   1, 2. submitted on October 20, 2022.

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Mar. 22, 2023