My son is working on an Eagle project, fixing up a township park. One of
the things he will do is fill a couple of ruts with stone. These ruts had
been filled with stone before, but some has washed out. (Parts of the park
get a bit flooded from an adjacent stream, causing the ruts.)

Someone has suggested that he look into "modified" stone, without really
knowing what it is. Poking around the web, modified stone seems to have
stone dust and small pieces mixed in with it, mainly for use as a driveway
base. Doesn't seem that this would help with a washout situation.

Any comments on a way to fill in these ruts?

Thanks.

Ken