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I I I I I I I I I I I I I I I I I I I Many private and publ ic properties will be severely impacted should a major flood occur. The lower portion of Kenneys Run from 20th Street to its confluence with Clear Creek is, for the most part, confined to a storm sewer system capable of carryi ng I ess than the 2-year frequency runoff, assumi ng fully-developed conditions. The West Fork Kenneys Run drainageway consists of an open channel with small capacity culverts for the 23rd and 24th Street crossings. Larger flows will separate from the major drainageway, becoming tributary to Jackson Street and affecting numerous residential properties. Upstream of 24th Street, the Golden High School is impacted by flooding. As described previously, the lower portion of the East Fork Kenneys Run from 20th Street to Jackson Street is storm-sewered with Ford Street providing the primary conveyance area for flood flows. The flood hazard is compounded by a small capacity inlet (24" CMP) at the upper end of this reach. Upstream of Jackson Street, flood flows escape the ditch along South Golden Road impacting the street and some commercial property. Where the ditch area widens between South Golden Road and the abandoned Interurban Rail road grade, flood flows become confined to public R.O.W., impacting primarily undeveloped State-owned property of the Lookout Mountain School for Boys. The abandoned Interurban Railroad grade, which intersects the floodplain, has a small capacity outlet forcing major flows along the south ditch of the railroad grade and over the embankment. Upstream of the railroad grade, the Boys School Road constitutes a low road grade crossing of the floodplain with a small capacity culvert and, therefore, is subject to relatively frequent overtopping and potential washout. More detailed information regarding existing flood hazards on Tucker Gulch and Kenneys Run is included in the Flood Hazard Area Delineation Report. 111-4