should add that not many here understand what you are taking about. We have one town that is 195 years old, thats old for here, and its been flooded
196 times, sometimes to 40 feet!!
Brenda, I just dont understand what you are saying?
Did buildings and vegetation get shifted and blown down the mountain?
As for the drains, are you talking about ;
- culverts
- swales
- ditches please?
Have you thought about having a hydraulic ram moving water from the spring, close to home and draining back to the stream.
That way you have running water without walking over to get it?
$300 does seem low, but it would be possible if you did not purchase the following;
- electrical
- plumbing
- water tanks
- window framess
- glass
- doors
- flooring
I would consider a tall [ 4M ] wall the shape of a snails shell for access with a clear roof for light.
Maybe a tall column chimney with a solar and battery powered fan to continuous draw air and smells downwards and up the column/ chimney.
With a large eye painted high on the wall at the entrance.