For a
given storm, there is an arguably unlimited supply of sediment relative
to the size of the gully system, and the storm-associated runoff
may not completely transport all sediment from source to sink, but
instead may deposit it throughout the channel in low gradient
areas. In addition, rocks and weeds can trap grasses, leaves, and sediment
and reduce flow velocity, triggering deposition. Unfortunately,
erosion pins installed within the channels can also trap material and
serve as accumulation points for deposition. To minimize the impact,
channel pins were consistently measured on the downstream side
where deposition was less likely to occur. Deposition of sediment
at erosion pins is a potential source of error, however other objects
naturally present in the channel have the same effect
For agiven storm, there is an arguably unlimited supply of sediment relativeto the size of the gully system, and the storm-associated runoffmay not completely transport all sediment from source to sink, butinstead may deposit it throughout the channel in low gradientareas. In addition, rocks and weeds can trap grasses, leaves, and sedimentand reduce flow velocity, triggering deposition. Unfortunately,erosion pins installed within the channels can also trap material andserve as accumulation points for deposition. To minimize the impact,channel pins were consistently measured on the downstream sidewhere deposition was less likely to occur. Deposition of sedimentat erosion pins is a potential source of error, however other objectsnaturally present in the channel have the same effect
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