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_ ~ '~~ <br />1. INTRODUCTION <br />During 7uly 1996, Mr. Curt Logsdon of Teller County, Colorado invited D. Chester <br />Watson, Director of the Center for River & Stream Studies, Civil Engineering Department at <br />Colorado State University, to review a portion of Fountain Creek within Teller Coun . Stream <br />~ <br />aggradation was described to be causing inadequate conveyance at the County b~dge over <br />~ <br />Fountain Creek (Structure No. TELLr6001.15-O1, as identified by Wilson & Company). During that <br />visit, discussions with Mr. Logsdon and Mr. Nfike Davenport, Planning Director of Teller County, <br />indicated that a recommended plan of study for alleviating the erosion problems at tlge County <br />bridge would be welcomed. <br />The lack of conveyance at the iCounty bridge over Fountain Creek is characteristic of <br />excessive aggradation, i.e., acccumulation of stream sediment in the vicinity of the bridge. analysis <br />supports this initial concept, the bridge problem is a symptom of a watershed problem, not just a <br />local site problem. The watershed problem would be that urbanization of the upstream portions of <br />Teller County and Woodland Park has increased the amount and intensity of runo~ increasing the <br />quantity of sediment supplied to the downstream reaches of Fountain Creek. As the slope of the <br />stream decreases near the Teller-E1 Paso County boundary, sediment settles out of the flow causing <br />stream instability and reducing the conveyance area at the County bridge. <br />The Center for River and Stream Studies (CRSS) will assist Teller County in developing a <br />long term solution to the stream instability problems along Fountain Creek. Three Phase I tasks <br />to be conducted by CRSS are: <br />a. Develop a history of the aggradation problem and related problems, <br />surveys, photographs, records, interviews, and other sources of <br />previous <br />Compile <br />1 <br />