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COARSE ROCK <br />3 1 OR FLATTER <br />FLOW LINE SLOPE <br />ROCK SET IN CORE TRENCH MINIMUM OF <br />2 5 FEET DEEP BY 2 TO 3 FEET WIDE <br />SIDE VIEW <br />A <br />!T <br />IMUM) <br />END POINTS "A" MUST BE HIGHER <br />THAN FLOW LINE POINT "B" <br />MINIMUM HEIGHT OF COURSE/ <br />ROCK PLACED IN CHANNEL <br />FLOW LINE IS 0 TO 3 FEET <br />FRONT VIEW <br />OW SIDESLOPE 21 OR FLATTER <br />L - <br />FLOW <br />I*; A fKos <br />�Y=�iY�rs <br />=�=Y`1 SIDESLOPE 2:1 OR FLATTER <br />A <br />PLACE DOWNSTREAM STRUCTURE <br />SUCH THAT POINT "B" IS APPROXIMATELY <br />LEVEL WITH POINT "D" OR AT POINT "C" <br />CHECK DAM PLACEMENT IS DEPENDANT UPON <br />SLOPE AND SINUOSITY OF DRAINAGE CHANNEL <br />0 5 TO 20 FEET <br />DIFFERENCE <br />�— +/- 20' WIDE <br />i <br />FIGURE 4.8-1a TYPICAL DRAINAGE STABILIZATION STRUCTURES, CHECK DAMS <br />4-183a <br />APR 012015 <br />Revision: IOR 07 <br />Approved: <br />