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S =Slope of Channel in feet per feet <br />A woven filter fabric may be installed under the loose rock check dams to improve stability and <br />function. Sediments will be removed behind loose rock check dams when they equal or excced <br />one-half of the dam height. Goose rock check dams will be lefr in place in reconstructed <br />drainage channels. It will not be necessary to clean out loose rock check darns used in <br />reconstructed drainage channels on reclaimed areas. <br /> <br /> <br />B~ <br />