A group of Mormons were crossing Clear Creek in the vicinity of Horsetown when the creek was running high. They lost a chest containing $40,000 from the tailboard of a wagon and it was impossible to recover, because of the raging storm waters in the creek. Mormons returned the following Spring to recover the chest, but all traces of the ford were gone and sand, rocks and gravel covered the area. The hoard of gold coins remain lost.
http://www.losttreasureusa.com/StateTreasures/StateTreasuresCALIFORNIA.htm
Would that be the same as this area?
http://www.horsetownclearcreekpreserve.org/