Are there some options? because there is a big number of water bodies in the US:
Lakes (Lake Superior, Lake Erie, Lake Mishigan)
Rivers (Mississippi, Hudson, others)
and many others: swamps, ponds, wetlands, bays....
Because it was a close water source where they could grow food instead of chase there food
People traveled to California during the Gold Rush because they wanted to find gold and get rich.
The California Gold Rush took place from 1848-1857. It was the largest American mass migration with an estimated 300,000 migrants taking part. Gold was recovered from the ground, streams, and rivers bringing in flocks if gold finding hopefuls.