Hi. I can help you with location conversions to lattitude and longitude and also spend some time helping on the DLC parcels...you have three spots identified for ONE location...my ancestry situation is sketchy. E mail me direct to my g mail e mail at Oregondave1 @ gmail dot com.
you will get lattitude and longitude from me for your requests and then you will be able to view on google maps or google earth to see if accessible today..and how much the river may or may not have moved, etc.... here is my cell 925.708.3764 Dave
Just copy and past what you want and resend to me as an e mail to my e mail oregondave1 at g mail dot com.. as my ancestry access is sketchy (for now).