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<br /> <br />6. Ang I ed rock structures (p I a'c i ng of I arge rocks <br />with approximately 1 to 1.5 feet of drop in the river) as <br />introduced by Dr. Donald R. Reichmuth, PE/LS GEOMAX, PC, in <br />his short course "Living With Fluvial Systems a Short Course <br />on River Mechanics," were not considered in the analysis <br />because of the lack of specific cost data, effectiveness, <br />and design information. <br /> <br /> <br />Angled rock structure across Elk River <br />Photography by Jim Thornton, SCS, Denver, Colorado <br /> <br />These type of structures are possible for the <br />landowners to install at their own initiative with the use <br />of technical assistance from consultants. They have a high <br />maintenance and may not be as effective during high flows. <br />Government assistance on this type of treatment may be <br />possible if adequate design standards and specifications <br />were prepared and approved by necessary authorities. <br /> <br />10 <br />