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I Table 11-' I FEATURES DIRECTLY AFFECTING WEST VALLEY SPILLAGE AND LOCAL DRAINAGE - HIGHWAY 36 TO NEAR THE WELLMAN DITCH I SOUTH BOULDER CREEK WEST VALLEY OVERFLOW . Spill above Highway 36 [H] . Highway 36 from Viele culvert [M] . Spill above Arapahoe Road to and [H] west to Basin Divide I including Wellman Ditch . Lower drainage network through [M] . Channel, diversion, and backwater Highway 36 and downstream characteristics downstream of [M] along Foothills to near Baseline Highway 36 . Foothills and Baseline Intersection [H] I including two storages with DRY CREEK NO.2 DITCH controls, storm sewers, roadway grades I . Culvert under Highway 36 [HI . Westerly subbasin drainage 1M] including adjacent ditch and local characteristics influencing drainage culverts under Highway discharge characteristics to South 36 Boulder and Bear Creek I . Spill structure and crossing of IH] watersheds South Boulder Road . Crossover Ditch from Foothills to [HI . Ditch, culvert, pipe and related [L] Dry Creek No.2 along Baseline storm sewers, minor spills, South . Lower Flatirons levee and culvert [M] I Boulder Road to downstream of under the on ramp to Viele Baseline . Street drainage and subdivision [M] . 55th Ditch from Baseline to Euclid [M] characteristics north of Baseline . 55th Ditch from Euclid to [H] . Street drainage and subdivision [M] I downstream of the Wellman characteristics north of Wellman . Downstream of 55th [M] . Golf course and industrial! [L] commercial area north of Wellman VIELE DRAINAGE SYSTEM I Wellman Ditch . Upper Basin conveyance network 1M] . Upper Viele storages 1M] . Bear Creek diversion and canal [H] . Viele storages and culverts at [H] crossing to and including Wellman I Interchange box culvert under Foothills . Lower Viele outfall channel 1M] . Canal flow and levee [H] characteristics from Foothills to ANDERSON DITCH SYSTEM 55th II . Canal flow and levee [H] . Diversion and spillage from Bear [H] characteristics from 55th to South Creek Boulder Creek . Anderson conveyance system [L] I from Broadway to Interchange . Anderson Ditch culvert entrance and multiple pipe conveyance [M] under Interchange, and blockage 'I issues . Anderson Ditch system east of [M] I Foothills through off ramp area to next culvert downstream, through I likely spill zone . Anderson Ditch system east to [L] spill zone . Anderson Ditch spill to Viele [M] I . Anderson Ditch to South Boulder [L] Creek I I 11-6 I