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• leaves, grass stems, and other debris of the ground cover.); height = 2" (a representative depth <br />of ground litter); stiffness = 2 (equivalent to a stand of Bermudagrass, Retardance Class B/C; <br />and an infiltration rate = 0.05 (lowest of a hydrologic soil profile of "C"). <br />C~ <br />• <br />The SEDCAD+ sedimentation model accommodates only four consecutive watershed conditions <br />within a given subwatershed. An overland flow of 190 (see Paragraph 4.3.3) feet was allowed <br />as best representative of that portion of Watersheds 19E and 19W with a land use condition of <br />2 (Paragraph 3.2, Overland Flow, oak brush). <br />7. SEDCAD+ ANALYSIS INFORMATION <br />SEDCAD+ demonstration computer printouts are attached. Across-reference of enclosures <br />(computer printouts) to SAE facilities, watersheds, ditches, and culverts is at Enclosure 4. <br />Peak discharges, minimum depths of ditches (for ditch configurations described in Paragraph 5), <br />and flow velocities (allowable and anticipated) are developed by the SEDCAD+ demonstrations. <br />These parameters are presented in the following table. <br />Table 7-1 Ditch Depths, Peak Flows, and Flow Velocities <br />Ditch' Depth <br />(feet) ~ Peak Flow <br />(cubic feet per second) Velocity <br />(feet per second) <br /> Capacity Anticipated Allowable Anticipated <br />D-1 0.59' 0.605 0.613 5.50? 3.60' <br />D-2 0.446 0.11' 0.106 5.506 2.396 <br />D-3 0.458 0.106 0.09' 5.508 2,426 <br />D-4 0.46' 1.1310 0.12' 5.509 2.419 <br />D-SE 0.42" 0.10" 0.0015 5.50" 0.00 <br />D-SW 0.42" 0.10° 0.0013 5.50" 0.00 <br />D-6 0.4512 0.52" 0.5212 5.5012 1.2212 <br />D-7 0.4314 0.2215 0.2214 not <br />designated16 5.7116 <br />D-8 0.54" 0.1815 0.18" 5.50" 1.58" <br /> <br />D-9 i <br />0.5318 <br />0.1719 <br />0.1715 <br />5.5018 <br />1.5518 <br />D-10 0.4920 ~ 0.2719 0.2720 5.5020 3.52zo <br />' See Enclosure 1 as a key to locations. 3 See Enclosure 6 <br />(Lone Pine Golch SAES Demonstration, l2 October 95, Page l0 of 13) <br />