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<br />e <br /> <br />FIGURE 2 - 1 River Classificatioo (Reprinted from Brice, 1983) 5 <br />FIGURE 2 - 2 Transitions sections from a bend to a crossing. (Reprinted from PetelSon, <br />1986) 6 <br />FIGURE 2 - 3 Helicoidal ftow in a bend. (Reprinted from Peterson, 1986) 6 <br />FIGURE 2 - 4 Clear water release below a dam (Reprinted from Chang. 1988) 10 <br />FIGURE 3 - 1 Types of mass failure of banks (Reprinted from Hemphill and Bramley <br />89) 20 <br />FIGURE 4 - I Typical revebnent with stone 28 <br />FIGURE 4 - 2 Sack Revetment 29 <br />FIGURE 4 - 3 Soil covered riprnp 30 <br />FIGURE 4.4 Staked Riprap 31 <br />FIGURE 4 - 5 Concrete mattresses 32 <br />FIGURE 4 - 6 Coocrete pavement 32 <br />FIGURE 4 - 7 Gabion 34 <br />FIGURE 4 - 8 Geotextiles 35 <br />FIGURE 4 - 9 Tire mat 36 <br />FIGURE 4 - 10 Tree and Brush Revebnent 37 <br />FIGURE 4 - 11 Hardpoint 39 <br />FIGURE 4 - 12 Live log crib 40 <br />FIGURE 4 - 13 Crib Deftector 41 <br />FIGURE 4 - 14 Dike 42 <br />FIGURE 4 - 15 Fence 44 <br />FIGURE 4 - 16 Drop grade coottol structure 47 <br />FIGURE 4 - 17 Brush Mat Revetment 50 <br />FIGURE 4 - 18 Cellular concrete blocks 50 <br />FIGURE 4 - 19 TImber and vegetation bulkhead 51 <br />FIGURE 5 - 1 Planning and preliminary design procedure 54 <br />FIGURE 6 - 1 Typical hardpoint 72 <br /> <br />e <br /> <br />COlorado Erosion Control Manual <br /> <br />VII <br />