Examples of chronic erosion (2)

An eroding boat ramp is shown at right, with silt going directly into the waterbody.    The drainage is sloped toward the center of the road, instead of to the sides, allowing for erosion and rilling (formation of small channels).  There are many cases like this where a broad based drainage dip or open-top culvert could divert drainage into a buffer on either side, eliminating the rilling. 

Another solution would be to pave the ramp area.  Although paving will stop the erosion, it won't allow for any treatment of the water flowing down the the lake, without crowning the road and letting the water flow to vegetated buffers on the sides.  To crown this road, you'd have to bring the level of the ramp subbase up a lot to get the water to move off to the sides.  Water moving off a crowned paved road will move a lot faster than water coming off a gravel road, so more care needs to be taken to avoid erosion along the sides of the road.

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