It is interesting to see what the local native americans (likely the Timpanogos tribe) called the various rivers.
Dry Creek: Pah-to-sho-unt-quint
American Fork River: Pah-gun-a-quint
Spanish Fork River: Pimquan
Pah, IIRC, was their word for water or river.
The Provo River was the Timpanogos River, but maybe that was name the pioneers gave it.
Sorry, can't remember where I got these...