Otter Tail County Polar Plunge smashes fundraising goal Otter Tail County's event for Special Olympics Minnesota raised more than $50,000, well over the initial goal of $35,000. Written By: Meg E. Perry | 7:01 pm, Mar. 13, 2021 × Team Purple Plungers, who collectively raised nearly $9,000 for Special Olympics Minnesota, take the plunge into Otter Tail Lake on Saturday, March 13. (Meg E. Perry / Perham Focus) Just as it’s getting warm outside, the temperature dropped quickly for those who participated in the 2nd annual Otter Tail County Polar Plunge as local individuals and teams leaped into the icy Otter Tail Lake on Saturday with style. This massively successful charitable event for Special Olympics Minnesota raised more than $50,000, well over the initial goal of $35,000. With over 27 locations all around the state, the Polar Plunge is the biggest fundraiser for Special Olympics Minnesota.