The saying “God willing and the Creek don’t rise” is in reference to the Creek Indians and not a body of water.
It was written by Benjamin Hawkins in the late 18th century.
He was a politician and Indian diplomat. While in the south, Hawkins was requested by the President to return to Washington. In his reply, he is said to have written, “God willing and the Creek don’t rise.”
He capitalized the word “Creek” because he was referring to the Creek Indians, and not a small stream of water.