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FLOOD09863
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Last modified
1/26/2010 10:10:54 AM
Creation date
10/5/2006 4:42:25 AM
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Floodplain Documents
County
Boulder
Community
Longmont
Stream Name
St. Vrain Creek
Basin
South Platte
Title
St. Vrain Creek Hydrology
Date
7/10/1985
Prepared For
Boulder County
Prepared By
Engineering Professionals
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />" , <br /> <br />. <br /> <br />. <br /> <br />Table 2 <br />PEAK DISCHARGES AT SELECTED LOCATIONS <br /> <br />bQf;.~:t.iQo. <br /> <br />Drainage <br />Area <br />i~g... tit...l, H'>=Y@i"!r: <br /> <br />Middle St. Vrain <br /> <br />at mouth 32.4 <br /> <br />at Peaceful Valley 18.7 <br />(State Hwy. 72 <br />bridge) <br /> <br />South Saint Vrain <br /> <br />at mouth 92 <br /> <br />Immed. DIS 0 66.7 <br />confluence with <br />Mid. St. Vrain Cr. <br /> <br />North St. Vrain <br /> <br />Buttonrock inflow 99 <br /> <br />Buttonrock 99 <br />spillway <br /> <br />at mouth 119 <br /> <br />Saint Vrain Creek <br /> <br />Confluence No. & 211 <br />So. St. Vrain <br /> <br />Lyons Gauge 212 <br /> <br />No. 85th St <br />(D/S Study limit) 241 <br /> <br />Boulder-Weld 351 <br />County line <br /> <br />at mouth 924 <br /> <br />590 <br /> <br />470 <br /> <br />1,400 <br /> <br />1,220 <br /> <br />1,600 <br /> <br />680 <br /> <br />1,000 <br /> <br />2,040 <br /> <br />2,030 <br /> <br />3,160 <br /> <br />5,520 <br /> <br />5,350 <br /> <br />Peak Discharge (cfs) <br />~Q=~~~~ !QQ=~@~C ~QQ=~~~C <br /> <br />1,430 <br /> <br />860 <br /> <br />3,750 <br /> <br />2,790 <br /> <br />4,200 <br /> <br />2,000 <br /> <br />2,850 <br /> <br />5,570 <br /> <br />5,560 <br /> <br />6,890 <br /> <br />10,950 <br /> <br />12,120 <br /> <br />4 <br /> <br />2,000 <br /> <br />1,180 <br /> <br />5,430 <br /> <br />3,990 <br /> <br />6,000 <br /> <br />3,100 <br /> <br />4,310 <br /> <br />8,880 <br /> <br />8,830 <br /> <br />9,580 <br /> <br />14,850 <br /> <br />16,520 <br />. <br /> <br />4,070 <br /> <br />2,320 <br /> <br />11,900 <br /> <br />8,560 <br /> <br />15,000 <br /> <br />7,600 <br /> <br />10,630 <br /> <br />20,260 <br /> <br />20,140 <br /> <br />19,680 <br /> <br />28,670 <br /> <br />40,080 <br />
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