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Lake Thompson is the second largest natural lake in South Dakota encompassing 18,000 acres. Lake Thompson was formed in the glacier age, but in the 1930s, the lake was completely dry and used for pasture. In the 1980s, the area was a 9,000-acre marsh. Heavy rains and snowmelt in the mid 80s filled
... Lake Thompson
Upcoming Events in Glacial Lakes and Prairies
May 27, 2013
- Little Fellow Memorial Day Service - Clark
May 30, 2013
- All Dakota Fine Arts Exhibition - Groton
May 31, 2013
- Ipswich Trail Days - Ipswich
- Wheel Jam III - Huron
- Motorcycle Rodeo Rally - Flandreau
- SD State BBQ Championships - Huron
June 1, 2013
- Kids Fishing Derby - Lake Preston
- Walk in the Park: Lost and Found - Miller
- Clark County Historical Society Heritage Day - Clark
- Brookings Car Festival - Brookings
- Bach Christiansen Family Reuion - Arlington
June 8, 2013
- Celebrating the Arts- Uptown Arts & Craft Festival - Watertown
June 9, 2013
- Disc Golf Tournament of Amateurs - Clear Lake
- Disc Golf Tournament of Amateurs - Corona
June 14, 2013
- Crystal Springs Ranch Rodeo - Clear Lake
- Family Fun Days - Grenville
- Prairie Hills Art Show - Wessington Springs
June 15, 2013
- Antique Power Show - Huron
- Jim's Tap/Sioux River ABATE Ride Through - Brookings
- Walk in the Park: Tree ID with Technolohy - Lake Preston
- Arts in the Park - Aberdeen
- Eureka Gold Classic Triathlon - Eureka
June 20, 2013
- Sisseton-Wahpeton Oyate Annual Wacipi - Sisseton
June 21, 2013
- Gary Rodeo - Gary
June 22, 2013
- Sisseton-Wahpeton Oyate Annual Wacipi - Sisseton
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