dgaddis wrote:You may not be able to do anything. First, try and figure out where it's coming from. Is it washing down the trail and settling in a low spot? If so, fix the trail uphill so that water flows across and off the trail, and instead following the trail and eroding it and pulling sand down to the low spot. If it's not washing down the hill, and is just sand that is there in the low spot, I don't think there's too much you can do there.
GALAXY wrote:My first thought,by the title of the post,was "add rocks".
dgaddis wrote:The key to stopping erosion to get the water off the trail ASAP. You want it flow across the trail, not follow the trail. Water bars are a bad idea, they small drop off the waterbar will cause holes to form on the low side of each bar. In other words, you'll just end up with stairs.
The trail nees to be outsloped, in other words, one edge of the trail (on the low side of the hill) needs to be lower than the other. The trail should not form a trench, water will stay in the trench and follow the trail. As it does, more water joins it, and it picks up speed, and erodes more and more. Digging a deeper trench, which will allow more water and more speed, and, well, you see where this is going. The worse it gets, the faster it gets worse.
Armoring ("paving" with stone, brick, etc) is an option too.
Here's some reading:
IMBA's Main Trailbuilding page
How to Toughen Trails - grade reversals and rolling dips are a good way to divert water off the trail before it can flow too far down building mass and speed and taking soil with it
Building Sustainable Trails
Building All Weather Trails
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