Otter Creek begins in the southwest swamp area of Birch Lake. There may be other minor sources but it is hard to tell. It begins and passes through the land that in 1879 belonged to Juilia Bertram, wife of George Bertram. It should be noted that George Bertram died in 1879, leaving this land and several plots of land on West River Street to his wife.
A $3.8 million, 164-acre acquisition successfully closed on June 5, 2014, bringing the park total to 721 acres. The purchase was made possible with $2.2 million in grant funding and additional match funding from Wright County and the City of Monticello.