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<br />. <br /> <br />uses the typical cross-sections to develop normal depth <br /> <br />. <br /> <br />storage/discharge <br /> <br />relationships <br /> <br />from <br /> <br />Manning's <br /> <br />equation. <br /> <br />The typical cross-sections were obtained <br /> <br />. <br /> <br />from the 1973 UD&FCD Big Dry Creek Report (Reference 6) <br />and from the 1976 Bureau of Reclamation Digitized <br /> <br />Cross-sections (Reference 8). <br /> <br />Typical cross- sect ions <br /> <br />are located in the Appendix. <br /> <br />. <br /> <br />Also located in the Appendix are Manning's "n" <br />roughness coefficients which were used for the stream <br /> <br />. <br /> <br />routing calculations. Manning's "n" values were based <br /> <br />on the following factors: <br /> <br />. 1. Channel Materials <br /> 2. Surface Irregularity <br /> 3. Degree of Cross-sectional Variation <br />. 4. Debris and Obstructions <br /> 5. Effect of Vegetation <br /> 6. Degree of Meandering <br />. <br />2.7 Reservoir Routings <br /> <br />. <br /> <br />Reservoir routings were performed by the Modified PuIs <br /> <br />method. <br /> <br />Stage-volume information for the reservoirs <br /> <br />. <br /> <br />was obtained from previously published reports (Refer- <br />ences 14 and 15). Standley Lake and Great Western Re- <br />servoir were assumed to be full as the initial condi- <br /> <br />- <br />... <br />