I am not sure how they got in the lake but six or eight years ago I caught a 16 inch walleye and two small stockers out of Jacobson. I am sure they were not stocked in there since the lake is ten feet at best. I am guessing they came from the private lake across the way. An old man told me that the stocking truck dumped them in Jacobson park by accident but it still had me scratching my head.