We have a 650' steep gravel driveway where erosion control is always an issue. I do three things:
1. Maintain a crown so water flows in a sheet flow to the sides rather than making a race track down the drive.
2. Every 50' or so I have what I call water bars, 45 degree mini channels to carry water to the sides into the ditch.
3. A good ditch line on each side and selected side channels to carry water away from the driveway area.
As some of the fines will always wash out, some surface gravel replacement in necessary every few years. (3/4” screen in my case).
Hard pack or ledge pack has stone dust mixed with fine (maybe 1/2" screen) gravel and/or stone. It will be more durable than regular gravel but only if you take some erosion control steps. A 10 minute cloud burst could cut a good channel in a poorly designed hard pack surface.
|