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No cross track drainage here! - make sure
the track you establish does not become
an eroding drain
More on Braiding
A berm on the downhill side (see ) prevented water from draining across the track. The rubbly channel encourages walkers to take the smooth option to one side. The track is now wider. Water runs straight downhill, not across the walking surface as it should.
Solution to braiding
make numerous deep breaks in the berm so water flows through them from the rubbly channel.
establish track at the higher level
fill channel with more rock/litter, but ensure that regular breaks in the berm at the lower level drain adequately.
where feasible destroy the berm altogether so that continuous cross track drainage is restored.
  People will find and prefer the smooth bits