REHABILITATION: REHABILITATION: A QUICK GUIDE A ... - saobc

oad gravel topping can be put down with a front end loading machine or handshovelled
off a tractor trailer or truck.
The key to successful cross-road drainage is effective construction and continual
maintenance to clear any blockages of water flow and repair storm damage as soon
as it occurs.
Where runoff water is deflected off the roadway and into the surrounding landscape,
particularly on slopes, the force of the water flow may eventually result in the
formation of an erosion gulley on the slope. It is therefore critical that soil erosion
be prevented at these sites of runoff water concentration and a practical way to do
so is to line the outflow area with tightly packed stones, to create a cobblestone
effect. This acts as a silt trap and the water flow force is broken up and spread,
preventing erosion.
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