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<br />Modifications by the owner to the Leyden Lake
<br />dam embankment and/or spillway will be
<br />nec....y to meet current flood requirement.
<br />01 established by the State Engineer. Channel
<br />deslQn downstream of tile dam assum.. no
<br />stgnifieant decrto.. in flood retention or
<br />increase in downstream flowl as a r.ault of
<br />modifications.
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<br />$".149.22
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<br />See SIlH' 3S fo< Typical
<br />Channet Cron Section
<br />Sta.I44+00 to 5to.149+oo
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<br />'if, EXISTING STRUCTURE
<br /><;<' OPENING AREA (F"')
<br />PROPOSED STRUCTURE
<br />OPENING AREA IFT-)
<br />PROPOS[O LOW CHCRl
<br />ELEVATION. (FT)
<br />EXISTING CHANNEL
<br />NIIERT ELf\ATlON.(fTl
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<br />Improved
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<br />'to
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<br />5ta_I46.00to 5ta.161tOO
<br />Design DilClWr9t 2200 cfs
<br />Main Channel
<br />AVll'o9t v.Iocity
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<br />5fa.l~ to 5fo.176+oo
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<br />Main Chof!lel
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<br />3800 cts
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<br />Set Shut 33 For Flood Plain This Area
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<br />DATUrol !S MEAN SEA LEVEL
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<br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT
<br />
<br />JEFFERSON COUNTY
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<br />DUIIN!!D DATI!:.i:B=Z2
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<br />WRIGHT -MoLAUGHUN ENGINI!I!".
<br />2420 A~COTT STR.n O."v'R COLORADO &071'
<br />THEPHO"lf 1303''lH620'
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<br />DAn hOWIII 8/30/74
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<br />LOCATION
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<br />STRUCTURE IMPROVEMENTS
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<br />INDIANA STREET
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<br />
<br />TYPE OF
<br />IMPROVEMENT
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<br />REMARI<S
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<br />PROPOSEO CHA~L
<br />IN'IERT El.E'.llT~.(FTJ
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<br />150+00
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<br />LEYDEN
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<br />CREEK
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