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Caraway, AR | JD,
I'm not focused real good on what your trying to do. What I'm getting is 700' run with a fall of 6". That is a .07 slope, which will drain water good. In fact if its not covered w/ grass if will probably erode some. If it washes you could put in a spillway of some kind to raise the water level and slow the flow down.
On cross slopes we usually put a .03 grade. Moves the water,but not fast enough to erode.
Your local Soil Conservation Office might help you.
Have a good day,
John | |
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