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<br />" <br /> <br />001547 <br /> <br />F. <br /> <br />General geomorphic and vegetation data. <br /> <br />*1. Evaluate streamside vegetation along a representative segment <br />or reach of stream to characterize seral stage (status) and <br />natural variation in the vegetation, evidence of inundation <br />levels, and evidence of external influences such as grazing. <br /> <br />*2. Perform a quantitative investigation of basal vegetation <br />ground cover and availability of suitable substrate (habitat) <br />for vegetation establishment. (Suitable substrate/habitat <br />means an adequate substrate upon which seeds can germinate, <br />rhizomes extend, and into which plants can develop their <br />roots, and includes adequate supplies of moisture, nutrients, <br />and sunshine.) <br /> <br />*3. Match i nformat ion obtained in Items I and 2 wi th the most <br />nearly similar segment evaluated in previous efforts, <br />including 1988 field work to be performed by the Cedar Creek <br />Associates, work performed for the Denver Water Department, <br />and other available research to facil itate extrapolation of <br />vegetation encroachment potential. <br /> <br />4. Perform a qual itat i ve geomorphi c invest igat i on to evaluate <br />existing and potential sources of sediment and geologic <br />controls considering: <br /> <br />a. Local geologic (lithologic and/or structural) controls. <br /> <br />b. Dominant geologic processes involved in the production <br />of unconsolidated materials. <br /> <br />c. Type and relative prevalence of unconsolidated deposits, <br />and the existence of or potential for the deposit to be a <br />significant source of sediment. <br /> <br />d. Source and transport mechanism for valley floor material. <br /> <br />III. DATA REDUCTION <br /> <br />A. Reduce cross-sectional data from survey notes. <br /> <br />B. Develop hydraulic geometry relationships for each cross section and <br />representative relationships for study reach. <br /> <br />C. Based on surveyed water-surface profiles and stream gage measure- <br />ments, determine energy gradient through the study reach. <br /> <br />D. Estimate representative bed- and bank-material gradations for the <br />study reach from the field samples. <br />