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<br />
<br /> TABLE 4
<br /> OBSTRUCTIVE STREAM CROSSINGS'
<br /> Elovalion'
<br /> Under- TOpol 100-year 51111-year
<br />Identilicatlon Locallo"' Slreambed clearance' Roadway' Flood Flood
<br /> COLORADO RIVER
<br />State Highway 340: ''''
<br />Now 373.93 4459 4479 4484 4431
<br />Old 374.45 4464 4433 4437 4483 "86
<br /> REED WASH
<br />DRGWRR 10.280 4458 4471 4478 4471 4478
<br />U.s. Highway 6-50 10,400 "" 4471 4474 4471 4478
<br /> BIG SALT WASH
<br />Interstate 70;
<br />Eastbound Lanes 370 4459 4471 4474 4472 4475
<br />We~tbound Lanes 475 4459 4471 4474 4473 4476
<br />DRGWRR 2,525 4465 "82 4490 4480 4489
<br />U.S, Highway 6.50 2,650 4467 44" 4480 4482 4489
<br />17 Road 9,050 4495 '''' 4512 4508 4514
<br /> LITTLE SALT WASH
<br />Interstate 70:
<br />Eastbound Lanes 1.575 4467 4479 4482 4477 4478
<br />Westbound Lanes 1,575 . 4467 4479 4482 4478 4480
<br />DnGWRR 2,725 4471 448~ 4493 "" 4489
<br />U,S, Highway6-SO* 2,915 4472 4485 4488 4484 ""
<br />Ottley Drive 4,875 4482 4498 4500 4497 4501
<br />17'J.:Road 6,476 4489 4507 4509 4501 4505
<br />17'~ Road 7.960 4496 4515 4518 4509 4514
<br />18 Rood 11,325 4513 4532 4535 "'8 4533
<br />18-)4 Road 15.275 4544 456~ 4565 4561 4.)67
<br />'Culvorls.",dosigMlcdb)",
<br />I Atth.upstr.."'I....otlh..truelu...(ox<<1ltlortoporrOlld...""}ronrtdedtoth.n.ar..ttoot. m.an... 1...1 datu""
<br />, Mil.. ul"tr<am from 1..-0. Ferry, Ariwnll. on the Colorado Riv,,; r..t up>t",.m from mouth 00 tributary .t",.",..
<br />, l.(lw.t<eI"tlow"lpo;nton.truotu"'lo-r.1ilyP<"orbridl:<.x..pt~..h,Toporop"nina:atmid",paoon""hbridAA,.n,1
<br />oul......
<br />, At lheoontor lin" 01 roacl Imm,dia:<il'a!>o". "nd".ioaranoe po;n',
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<br />TABLE 5
<br />
<br />AVERAGE VELOCITIES OF FLOW
<br />111I).YEARFLOOO
<br />
<br />Stream
<br />CQloradoRiver
<br />Reed Wash
<br />Big Salt Wash
<br />L1tl1eSallWash
<br />
<br />a residential section in the northwestern
<br />corner of Fruita.
<br />The 100-year flood would inund&te about
<br />3.720 acres, of which &bout 3.000 a~res arc
<br />agricultural Or open land~, 20 acres are urban,
<br />and 700aeres arestreamway.
<br />
<br />FLOOD DAMAGES
<br />
<br />DamagesresultingfromalOO-ol"500.year
<br />flood would be mainly to agri~ultul"al and
<br />undevcloJXd lands, residential areas,and
<br />public facilities. Residential losse~ would
<br />comprisedamagetofoundations,!owerfloors,
<br />walls, furnishing.;, appliances, and lawns and
<br />gllrdens. Agricultural los-'<e$ would consist of
<br />erosion, loss of crops, and c1caring fields
<br />oovered with debris &nd silt. Public facility
<br />losses would involve dam&gc to roads, bridges,
<br />culverts,irrigationsystems,andhi!l;hwavand
<br />
<br />Velocl1~
<br />(Ieetpersecond)
<br />Main Channel Overbank Areas
<br />
<br />,,'
<br />8-10
<br />~,
<br />8-12
<br />
<br />"3
<br />,.3
<br />,.,
<br />',2
<br />
<br />The pattern of flooding along the streams
<br />under 5tudy would be similar for both thc 100-
<br />and 500-year floods, though 500-year
<br />flood flows would extend farther from the
<br />channel and would lJedeeper.
<br />
<br />railroad embankment. Other flood losses
<br />would include the cost of flood fighting and
<br />post flood cleanup and restoration,
<br />Damage would be greater during a 500,
<br />rcar flood than durinll' a lOO-year flood due to
<br />the wider flood plain, greater depth of
<br />flooding, and hil'(her vel(>City of flow,
<br />The depth of flow in the various channels
<br />andadjac~ntfloodedareascanbedetermined
<br />from the water surface profiles shown on
<br />PIBtes43,55.
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