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<br />- I <br />~ <br /> <br /> <br /> <br />1. What will be the meander pattern? <br />2. What will be the configuration of the channel? <br />3. What will be the substrate material? and <br />4. What will be the pool-riffle sequence? <br /> <br />ELK RIVER <br /> <br />Elk River is a tributary of the Verdigris River in the Arkansas <br />River basin in southeastern Kansas. The Elk River reach selected for <br />evaluation is near Longton, Kansas. Participants were asked to analyze <br />and evaluate expected response of this reach of river to the installa- <br />tion of 45 small floodwater retarding dams in the upstream reaches of <br />the watershed under the U.S. Department of Agricultural So11 <br />Conservation Service small watershed program. Again, the question <br />relative to the Elk River was "What will happen to the morphology of the <br />stream channel as a result of the changes in streamflows and sediment <br />discharge caused by the construction of a number of small flood <br />retention reservoirs upstream of a reach of stream?" Specifically, for <br />both a short and a long time after construction of the reservoirs: <br /> <br />1. What wi 11 be the meander pattern? <br />2. What will be the configuration of the channel? <br />3. What will be the substrate material? and <br />4. What will be the pool-riffle sequence? <br /> <br />Acknowledgements: The assistance of the following individuals in <br />providi ng data for the Workshop problems is grate'fully acknowl edged. <br /> <br />Yampa River: T. D. Steele & D. Bauer <br />U.S. Geological Survey <br />Denver, Colorado <br /> <br />Poplar Creek: M. Gee <br />Hydrologic Engineering Center (HEC) <br />Davis, California <br /> <br />E. F. Sing <br />U.S. Army Corps of Engineers <br />Sacramento District Office <br />Sacramento, California <br /> <br />El k River: <br /> <br />L. H. Wetter, Hydraulic Engineer <br />R. L. Hager, State Biologist <br />C. E. Deal, Civil Engineer <br />Soil Conservation Service <br />Lawrence, Kansas <br /> <br />5 <br /> <br />