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<br />032826 <br /> <br />Physical Mitigation Methods for Debris Flows <br /> <br />1. Source-area stabilization <br />a. Check dams <br />b. Revegetation <br />2. Energy dissipation and flow control <br />a. Deflection walls <br />b. Debris basins <br />c. Debris fences <br />d. Deflection dams <br />e. Channelization <br />3. Direct protection <br />a. Impact-spreading walls <br />b. Stem walls <br />c. Vegetation barriers <br /> <br />Physical Mitigation Methods for Rockfalls <br /> <br />1. Stabil ization <br /> a. Excavation <br /> b. Benching <br /> c. Scaling and trimming <br /> d. Anchors/rock bolts/dowels <br /> e. Chains and cables <br /> f. Anchored mesh nets <br /> g. Shotcrete <br /> h. Buttresses <br /> i. Drainage <br /> j. Dentition <br />2. Protection <br /> a. Rock-trap ditches <br /> b. Catch nets and fences <br /> c. Catch wa 11 s <br /> d. Rock shed or tunnel <br /> <br />Descriptions and diagrams of these methods are provided in Appendix "C". <br /> <br />- 41 - <br />