There was no indication that the pilot had made a distress call, said Transportation Ministry spokesman Julius Barata.
Family and friends gathered to celebrate the life of a man who was stabbed to death at his Pflugerville home last week.
The city expects the boil water notice will be lifted Tuesday, Aug. 18.
The golf course now boasts new turf and a new drainage system.
Austin police say a man in his mid-20s was taken out of the water and rescue crews were performing CPR.
A five-vehicle crash blocked northbound lanes of IH-35 in North Austin for a few hours.
Austin ISD is the largest school district in Central Texas, with nearly 85,000 students and 6,300 teachers.