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FLOOD10164
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Last modified
1/26/2010 10:12:11 AM
Creation date
10/5/2006 4:56:16 AM
Metadata
Fields
Template:
Floodplain Documents
County
Arapahoe
Community
Littleton
Stream Name
Slaughterhouse Gulch
Basin
South Platte
Title
Major Drainageway Planning
Date
4/1/1974
Prepared For
Littleton, DRCG, DHUD
Prepared By
Frasier & Gingery, Inc.
Contract/PO #
&&
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />, <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />The storm sewer from Windermere Street to Powers Park varies <br />in size from three 3~-inch metal pipes to a 42-inch concrete <br />pipe, to a 36-inch concrete pipe, just recently installed in <br />Berry Circle, and a 36-inch metal pipe outlet from Powers <br />Park. This sewer system was analyzed using the Bernoulli <br />Equation and computing the maximum allowable hydraulic grade <br />line and discharge through the system without surcharging <br />any inlets. The capacity varied from approximately 100 cfs <br />at Windermere Street to SOcfs at Powers Park. The storm sewer <br />on the South Tributary was installed in many segments varying <br />from a 42-inch concrete pipe to an l8-inch metal pipe. This <br />storm sewer system has limited capacity in the segment at the <br />intersection of Powers Avenue and Windermere Street. The <br />system capacity is approximately 60 cfs at this point. Limi- <br />tations include, inadequate pipe slope, insufficient surface <br />inlets and insufficient ponding depths. <br /> <br />The calculated sewer capacities were subtracted from the total <br />computed flows used to calculate the flood plain through these <br />reaches. <br /> <br />For the major flood <br />are insignificant. <br />year flood plain is <br /> <br />flows, these existing structure <br />The effect of each structure on <br />very minor. <br /> <br />capacities <br />the 100- <br /> <br />Flood plain reference data for the existing 100-year flood <br />plain, on Slaughterhouse Gulch is included in Table IV. Table <br />IV includes; reference points and their identification, dis- <br />stance of reference points from South Platte River, and stream <br />bed and water surface elevations. <br /> <br />IV- 2 <br />
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