Tonto Basin

(Patrick Breen/The Arizona Republic via AP)

An Arizona couple whose truck was swept down a runoff-swollen creek say they are grateful to emergency personnel and volunteers searching for their missing 6-year-old daughter.

(Patrick Breen/The Arizona Republic via AP)

Authorities say they have found a shoe that might belong to a 6-year-old girl who went missing late last week when the family's truck was inundated by surging water in a creek.  Searchers say they found the shoe Sunday about 200 yards from where the family's vehicle got stuck in the creek Friday.