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<br />Tuesday, May 19 10:30 - 11:45 AM Track 5 - Erosion I - Moderator: Dan Sawamoso <br /> <br />MULTI-OBJECTIVE MANAGEMENT CRITERIA FOR STREAMBANK PROTECTION <br />Robbin B. Sotir <br /> <br />In response to increasing environmenllLl concerns, streambank protection efforts are expected to address issues such as habitat and water <br />quality in addition to erosion protection. Streambank protection designs that include vegetation are likely to satisfy these multiple objectives, <br />Soil bioengineering systems, which utilize woody vegetation as the principal component, can provide soood streambank protection while <br />maximizing ecological and hydraulic benefits, <br /> <br />Soil bioengineering systems can be used to meet specific aquatic and riparian habitat objectives such as providing scour holes, overhanging <br />cover for fish, and food and nesting areas for birds and mammals. Case studies are presented to illustrate the use of these systems, Plant <br />selection to achieve riparian and aquatic habitat is discussed, and tables are presented that show habitat values of various plant species and <br />soil bioengineering methods in different geographic locations, <br /> <br />Information for evaluating alternative soil bioengineering streambank protection measures and selecting those that best achieve multiple <br />project objectives are presented in lahul,.. form This criteria has been used on several projects where environmental objectives were major <br />concerns, including an urban stream in Charlotte, North Carolina, relocated streams in Portland, Oregon and Sevierville, Tennessee, and <br />a major sport fishin~ stream in Alaska, <br /> <br />SEDIMENT DEPOSmON BEHIND LEVEES <br />Ed MifiIin <br /> <br />Design heights of diversion dikes or l<:vees on alluvial planes depends in part on the amount of sediment that can be expected to deposit <br />on the upslope side. A method is presented to define an upper limit on the height of a given volume of sediment deposited at the upslope <br />face of a levee traversing a plane of given slope. The levee is assumed to traverse the plane at a constant elevation. The method exploits <br />the condition that any flood canyinR Slldiment will follow the steepest path available, <br /> <br />DESIGN, CONSTRUCTION AND OPERATION OF A STATE-OF-TIlE-ART EROSIONTECHNOWGY TEST <br />LABORATORY <br />Dwight A. Cabalka. PE and Paul Clopper, PE <br /> <br />In recent years, project owners and designers have been clamoring for reliable information on the material and performance characteristics <br />of erosion control materials, Users of these products consider test data as vital information to predict application success for a variety of <br />projects, to evaluate potential materials and insulation methods, and to establish project-specific quality requirements. Likewise, quality- <br />conscious manufacturers of erosion control products need this documentation for product research and development; sales and marketing <br />purposes; installation guidelines; and product certification purposes. Many users and manufacturers have done infonnal field test on erosion <br />control products with varying levels of documentation and reliability, Contract testing services are available through a few universities <br />provided fee requirements and scheduling conflicts can be negotiated, All an alternative source, this paper details the design and <br />construction of a dedicated, state-of-the--art erosion test laboratory located in Rice Lake, Wisconsin, This outdoor facility includes twelve <br />rainfall simulation plots for evaluation of erosion control materials on slope applications, Rainfall intensities of up to ten edges dictate per <br />hour (10 inIhr) are achieved on the eight foot by forty foot long plots, In addition, the facility includes twelve open-channel flumes for <br />evaluation of erosion control materials in hydraulic applications, Velocities ofup to fourteen feet per second and corresponding shear <br />stresses of up to ten pooods per square foot are achieved at the maximum discharge of sixty cubic feet per second Detailed infonnation <br />on the design features of the facility to do::ument key external variables, including quality aspects, are also discussed, Testing protocol and <br />actual test results will be presented as this information becomes available, <br /> <br />