I don't get any caches yet here. Sometimes along creeks that have a historical past, relics and coins often are deep near the banks close to the water. My one cousin lived on Tonawanda Creek in NY, which has a very old history. He found very old belt buckles and other relics in the mud just by eyeballing without a metal detector. It floods in spring, things can be washed out of the banks of the stream.
Map Doc2 there is a silver signal, might be all 3 maps be loose relics and/or coins. In Doc1, Doc3 a little bit of a gold signal, that could come from gold plated buttons or even possibly a little native gold in the stream (if it can be found there).