The Spencer County coroner says drowning was the cause of death for Indiana amusement park owner Will Koch (COOK).
The park is called Holiday World and Splashin' Safari and is located in Santa Claus.
Park spokeswoman Paula Werne says Koch's wife found the 48-year-old in the family pool. Werne says the family thinks Koch's diabetes contributed to his death Sunday.
She says Koch was an excellent swimmer.
Koch oversaw major expansion of the amusement park during 20 years as its leader. His funeral is Thursday at the Santa Claus United Methodist Church.