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Last modified
1/26/2010 10:13:22 AM
Creation date
10/25/2007 5:33:15 PM
Metadata
Fields
Template:
Floodplain Documents
County
Boulder
Community
Boulder
Stream Name
Fourmile Canyon
Basin
South Platte
Title
Fourmile Canyon Creek - Major Drainageway Planning - Phase A Report - Alternatives Analysis
Date
6/1/2000
Prepared For
UDFCD, Boulder
Prepared By
Love & Associates
Floodplain - Doc Type
Flood Mitigation/Flood Warning/Watershed Restoration
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<br />2060 <br /> <br />5290 <br /> <br />. Upstream Face of Colorado State Hwy l19--West Bridge <br />* (West Bridge combines the two bridges furthest upstream. The west bridge <br />;, contain. Southbound lanes and the east brictge contain. Southbound lanes.) <br />* Bridge .kew adju.ted manually. <br />Xl 14, 14 1025 1098 105 145 162 <br />X3 10 1005 1118 <br />GR 5288 5290 912 5293 994 <br />GR5219.2 5279.2 1056.6 5278 1066 <br />GR5280.8 5285.8 1098 5294 1118 <br /> <br />2040 <br /> <br />5288 <br /> <br />2021 <br /> <br />5286 <br /> <br />1985 <br /> <br />5284 <br /> <br />1912 <br /> <br />5284 <br /> <br />GR <br /> <br />No spill flow occurs during the 10-year ~vent <br />Spill flow oocurs during tho 50, 100 and 500-yoar events <br />Spills we.t of llroadway flow to Wonderland Creek <br />Spills east of llroadway ~> due to flow split at Crestview Elementry School <br />a portion of the spills return to Fourmile Canyon Creek at 19th and the <br />remainder flows to Wonderland Creek <br /> <br />* <br />* <br />* <br />* <br />* <br />* <br /> <br />I <br /> <br />I <br /> <br />1025 <br />1078 <br /> <br />5286 <br />5288.9 <br />5293. 8 <br /> <br />5278.3 <br /> <br />3 <br />6 <br /> <br />5294.8 <br />5295.1 <br />5295.5 <br /> <br />5285 <br />5280 <br /> <br />5278.7 <br /> <br />1005 <br />1076 <br />1489 <br /> <br />990 <br />1033.3 <br />1095 <br /> <br />1. <br /> <br />5290 <br />5278.3 <br />5296 <br /> <br />169 <br /> <br />5292.9 <br />5288.9 <br />5285.3 <br /> <br />688 <br /> <br />1.77 <br /> <br />1064 <br />5294. 7 <br />5295.1 <br />5295.4 <br /> <br />160.7 <br /> <br />50 <br /> <br />1 <br />9 <br /> <br />160 <br />5292 <br /> <br />970 <br />1031 <br />1064 <br /> <br />1064.1 <br />5289.2 <br />922 <br />5292.9 <br />5288.6 <br />5289.2 <br />5293.8 <br />922 <br />1002 <br />1054 <br />1315 <br /> <br />990 <br />1 <br /> <br />5292.9 <br />5294.8 <br />5295.4 <br />5293.9 <br />5292 <br />5280.3 <br />5281. 6 <br />5292 <br /> <br />701 <br />1054. 9 <br />1088 <br /> <br />1.56 <br /> <br />970 <br />990.1 <br />1064 <br />1095 . 1 <br />70, <br />990.1 <br />1053 <br />1095.1 <br /> <br />11 <br /> <br />1.05 <br /> <br />Xl <br />X2 <br />X3 <br />IlT <br />l!T <br />llT <br />IlT <br />GR 5290 <br />GR 5286 <br />GR5278.7 <br />GR5293.8 <br /> <br />150 <br /> <br />10 <br />-10 <br /> <br />SB <br /> <br />up.tream .pills <br />at llroadway <br /> <br />bec.ause <br /> <br />QT Cards at .ections 441 and 500 directly from SWMM output <br />QT Card at sections 485 aVQrage of SWMM output at 441 and 500 <br />QT Cards at seotions 380 and 441 from SWMM output assuming no <br />QT Cards at sections 256 and 125 from SWMM output with .pills <br />and 19th <br />The SOO-year spill Q's were egtrapolatect from the 50 and 100-year Q <br />precipitation data for the 500 year event was not available. <br />SWSE 500-yr ~ 5277.8, matchos WSE at XS 125 of the Regulatory Model <br />SWSE 100, 50, 10-yr ~ 5276.8, matches WSE at XS 125 of the Regulatory Model <br />SWSE 5 and 2-yr ~ 5276.8, as.umed equal to 100, 50, 10-year SWSE <br /> <br />, s <br /> <br />50-Year, 100-Year, 500-1~ar <br />78. 1458 1,5, 2500 <br /> <br />10-Y~ar <br />433 <br /> <br />5-1ear <br />189 <br /> <br />· QT 2-year <br />QT 6 <br /> <br />* <br />* <br />* <br />* <br />* <br />. <br />* <br />* <br />* <br />* <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />990 <br />1043 <br />1095 <br /> <br />5286 <br />5278.7 <br />5293. 8 <br /> <br />970 <br />1033 <br />1064 <br /> <br />5292.9 <br />5279.5 <br />5285.3 <br /> <br />970 <br />1031. 5 <br />1064 <br /> <br />5292.9 <br />5279.5 <br />5285.3 <br /> <br />Upstream Fa~e of Colotado State Hwy 119--West Bridge <br />(West Bridge combines the two bridges furthest upstream. The west bridge <br />~ontains southbound lanes and the east bridge contains Southbound lanes.) <br />llridge .kew adju.ted manually. <br />lllockage - 0% <br /> <br />648 <br />653.6 <br />1110 <br /> <br />5274 <br />5276 <br />5278 <br /> <br />350 <br />653.5 <br />900 <br /> <br />5274 <br />5214 <br />5276 <br /> <br />330 <br />649.1 <br />750 <br /> <br />5276 <br />5274.8 <br />5274.5 <br /> <br />653 <br /> <br />225 <br />649 <br />654.6 <br /> <br />055 <br /> <br />649 <br /> <br />5278 <br />5216.8 <br />5274.5 <br /> <br />06 <br /> <br />16 <br /> <br />ZOO <br />648.1 <br />654.5 <br />1230 <br /> <br />06 <br /> <br />Xl 125 <br />x3 10 <br />GR 5260 <br />GR5276.8 <br />GR5276.6 <br />GR 5280 <br /> <br />NC <br /> <br />I <br /> <br />1100 <br />1285 <br />1341 <br />1400 <br /> <br />5298.8 <br />5286 <br />5284 <br />5284 <br /> <br />1090 <br />1256 <br />1315 <br />1380 <br />1465 <br /> <br />155 <br /> <br />5298 <br />5288 <br />5282 <br />5284 <br />5292 <br /> <br />105 <br /> <br />1060 <br />1235 <br />1308 <br />1370 <br />1450 <br /> <br />220 <br /> <br />5298.9 <br />5290 <br />5280.9 <br />5286 <br />5290 <br /> <br />1362 <br /> <br />1021 <br />1190 <br />1300 <br />1362 <br />1425 <br /> <br />1285 <br /> <br />5298.1 <br />5296 <br />5282 <br />5286.3 <br />5288 <br /> <br />24 <br /> <br />1000 <br />1163 <br />1290 <br />1355 <br />1405 <br /> <br />160 <br />10 <br />5298 <br />5298 <br />5284 <br />5286 <br />5286 <br /> <br />:~\1 <br />X3 <br />GR <br />GR <br />GR <br />GR <br />GR <br /> <br />1411 <br />1968 <br /> <br />5281. 7 <br />5286 <br /> <br />length. <br />24 <br /> <br />1406.5 <br />1861 <br /> <br />5281. 7 <br />5284 <br /> <br />effective weir <br />24 24 <br />1475 <br />5282 1388 <br />5282 1620 <br /> <br />025 <br /> <br />encroached to simulate <br />10 1406.5 1415.5 <br />1265 <br />1265 <br />1475 <br /> <br />5282.2 <br />5282 <br /> <br />06 <br /> <br />1000 <br />1415.5 <br /> <br />126 <br /> <br />06 <br /> <br />* Section <br />Xl 126 <br />X3 <br />GR <br />GRS <br /> <br />5284 <br />281. 7 <br /> <br />NC <br /> <br />I <br /> <br />1285 <br />1590 <br />1665 <br />1840 <br />2345 <br /> <br />5300 <br />5292 <br />5283 <br />5286 <br />5292 <br /> <br />1265 <br />1520 <br />1655 <br />1815 <br />2278 <br /> <br />133 <br /> <br />5299.3 <br />5300 <br />5284 <br />5288 <br />5290 <br /> <br />140 <br />1840 <br />1160 <br />1490 <br />1650 <br />1755 <br />2200 <br /> <br />.3 <br /> <br />140 <br />5288 <br />5300 <br />5302 <br />5286 <br />5288 <br />5288 <br /> <br />1712 <br />1640 <br />1150 <br />1478 <br />1640 <br />1712 <br />2007 <br /> <br />1640 <br /> <br />5300 <br />5302.1 <br />5288 <br />5286 <br />5286 <br /> <br />26 <br /> <br />1000 <br />1365 <br />1615 <br />1,03 <br />1898 <br />2407 <br /> <br />NC <br /> <br />Xl 170 <br />X3 <br />GR 5302 <br />GR 5302 <br />GR 5290 <br />GR 5284 <br />GR5285.2 <br />GR 5294 <br /> <br />1278 <br />1760 <br /> <br />5279 <br />5282 <br /> <br />1240 <br />1635 <br /> <br />14 <br /> <br />5279.5 <br />5281 <br /> <br />14 <br /> <br />1125 <br />1540 <br /> <br />of weir <br />14 <br /> <br />5280 <br />5280 <br /> <br />055 <br /> <br />130 set in pool upstream <br />11 1125 1455 <br /> <br />860 <br />1405 <br />1895 <br /> <br />1000 <br />1455 <br /> <br />5282 <br />5280 <br /> <br />06 <br /> <br />06 <br /> <br />.,w. Section <br />Xl 130 <br />X3 10 <br />GR 5284 <br />GR52,9.8 <br />GR 5284 <br /> <br />NC <br /> <br />I <br /> <br />I <br /> <br />1225 <br />1410 <br />1627 <br />1738 <br />2180 <br /> <br />5306 <br />5296 <br />5292 <br />5294 <br />5296 <br /> <br />1175 <br />1360 <br />1610 <br />1720 <br />2150 <br /> <br />585 <br />5296 <br />5306.3 <br />5298 <br />5294 <br />5294. , <br />5294 <br /> <br />560 <br />1970 <br />1128 <br />1335 <br />1525 <br />1710 <br />2060 <br />2258 <br /> <br />580 <br /> <br />5308 <br />5300 <br />5294 <br />5294 <br />5294 <br />5300 <br /> <br />1720 <br /> <br />1045 <br />1300 <br />1510 <br />1675 <br />2015 <br />2230 <br /> <br />1610 <br /> <br />5310 <br />5302 <br />5293.7 <br />5292 <br />5296 <br />5298 <br /> <br />28 <br /> <br />1000 <br />1270 <br />1490 <br />1631 <br />1970 <br />2205 <br /> <br />Xl 175 <br />X3 <br />GR 5312 <br />GR 5304 <br />GR 5294 <br />GR5291. 3 <br />GR 5296 <br />GR 5298 <br /> <br />1220 <br />1355 <br />1562 <br /> <br />from <br /> <br />5278.9 <br />5276.4 <br />5278 <br /> <br />simulate affective flow area and expansion <br /> <br />1000 <br />1334 <br />1395 <br /> <br />45 <br /> <br />5280 <br />5276 <br />5277.6 <br /> <br />40 <br />1405 <br />925 <br />1332 <br />1372 <br />2000 <br /> <br />45 <br /> <br />5282 <br />5275 <br />5276 <br />5284 <br /> <br />1395 <br />1240 <br />900 <br />1330 <br />1367 <br />1975 <br /> <br />encroached to <br /> <br />1320 <br /> <br />5284 <br />52,6 <br />5273 <br />5282 <br /> <br />18 <br /> <br />840 <br />1320 <br />1365 <br />1855 <br /> <br />* Section 135 <br />* HWY Bridge. <br />Xl 135 <br />X3 <br />GR5285.8 <br />GR 5278 <br />GR 5276 <br />GR 5280 <br /> <br />I <br /> <br />1305 <br />1683.6 <br />1805 <br />2020.1 <br />n80 <br /> <br />5306 <br />5299.7 <br />5300 <br />5294. 8 <br />5314 <br /> <br />1240 <br />1535 <br />1686.4 <br />2020 <br />2120 <br /> <br />123 <br />5306 <br />5308 <br />5300 <br />5299.7 <br />5306 <br />5310 <br /> <br />120 <br />1990 <br />1148 <br />1440 <br />1686.3 <br />1990 <br />2070 <br /> <br />.5 <br /> <br />120 <br /> <br />5310 <br />5302 <br />5293.8 <br />5306 <br />5308 <br /> <br />1805 <br /> <br />1062 <br />1370 <br />1685 <br />1940 <br />2030.1 <br /> <br />1535 <br /> <br />5312 <br />5304 <br />5293.8 <br />5304 <br />5306.1 <br /> <br />25 <br /> <br />1000 <br />1345 <br />1683.7 <br />1865 <br />2030 <br /> <br />NC <br /> <br />Xl 180 <br />X3 <br />GR 5314 <br />GR 5304 <br />GR5293.6 <br />GR 5302 <br />GR5294. 8 <br /> <br />998.1 <br />1039 <br />1230 <br /> <br />lanes from <br /> <br />5274.1 <br />5274.9 <br />5284 <br /> <br />998 <br />1037 <br />1069.1 <br /> <br />.5 <br /> <br />* Down.tream Face of colorado State Hwy 119--East Bridge <br />* East 8ridge contain. Northbound lane. merging into Northbound <br />* West bridge.} <br />. Bridgo skew adjusted manually. <br />Xl 140 16 975 1069.1 <br />X3 10 975 <br />GR 5284 891 5285.2 975 <br />GR5273.9 1005 5273.9 1007 <br />GR 5275 1046 5277.5 1046 <br />GR 5286 1479 <br /> <br />53 <br /> <br />5278 <br />5274.9 <br />5285.4 <br /> <br />55 <br />1069.1 <br />9,5.1 <br />1034 <br />1069 <br /> <br />55 <br /> <br />5219.9 <br />5273 <br />5290.7 <br /> <br />NC <br /> <br />I <br /> <br />I <br /> <br />blockage <br /> <br />5293.8 <br />5299.7 <br />5304 <br />5294. B <br />5294.8 <br /> <br />00% <br /> <br />5299.7 <br />5299.7 <br />5304 <br />5306 <br />5306.1 <br /> <br />low chord to model <br />B@1686.3 <br /> <br />1683.7 <br />1686.4 <br />1940 <br />2020.1 <br />2030 <br /> <br />5 <br />5306 <br />5293.8 <br />5293.8 <br />5302 <br />5306 <br />5302.6 <br /> <br />5 <br />1990 <br />5299.7 <br />5299.7 <br />5302 <br />5306 <br />5306.1 <br /> <br />17th Street <br />centerline - artificial <br />5295.8@1683.7 5295 <br />0% blockage <br />1805 <br /> <br />1683.7 <br />1686.3 <br />1865 <br />2020 <br />2030 <br /> <br />1305 <br />1683.6 <br />1605 <br />2020.1 <br />2160 <br /> <br />5306 <br />5299.7 <br />5300 <br />5294.8 <br />5314 <br /> <br />1240 <br />1535 <br />1686.4 <br />2020 <br />2120 <br /> <br />5308 <br />5300 <br />5299.7 <br />5306 <br />5310 <br /> <br />1148 <br />1440 <br />1686.3 <br />1990 <br />2070 <br /> <br />5310 <br />5302 <br />5293.8 <br />5306 <br />5308 <br /> <br />5299.7 <br />5293.8 <br />5300 <br />5306 <br />5302.6 <br />5306.1 <br />1062 <br />1370 <br />1685 <br />1940 <br />2030.1 <br /> <br />5299.7 <br />5299.7 <br />5300 <br />5306 <br />5306 <br />5306.1 <br />5312 <br />5304 <br />5293 . 8 <br />5304 <br />5306.1 <br /> <br />* Down.str.eam Face of <br />. Culvert at channel <br />* 8ctual low chord <br />+ pedestrian undGrpass - <br />Xl 180.1 25 1535 <br />X3 <br />BT -16 <br />BT <br />BT <br />BT <br />BT <br />BT <br />GR 5314 <br />GR 5304 <br />GR5293.8 <br />GR 5302 <br />GR5294.8 <br /> <br />1683.6 <br />1686.3 <br />1805 <br />1990 <br />2020.1 <br />2030.1 <br />1000 <br />1345 <br />1683.7 <br />1865 <br />2030 <br /> <br />5273 <br /> <br />1169.1 <br />1212 <br />1263 <br />1724 <br /> <br />5281 <br />5281 <br /> <br />5273.7 <br /> <br />5279.9 <br />5273.7 <br />5280.7 <br />5286 <br /> <br />5287 <br />5287 <br /> <br />2. <br /> <br />1199 <br />1233 <br /> <br />1169 <br />1201 <br />1240.1 <br />1597 <br /> <br />510 <br /> <br />5281.5 <br />5281.8 <br />5285.4 <br />5285.2 <br />5273.9 <br />5277.5 <br />5286 <br /> <br />63 <br /> <br />56 <br /> <br />1263 . 1 <br />5287 <br />5287.3 <br />5285.4 <br />1158 <br />1199 <br />1240 <br />1434 <br /> <br />65 <br /> <br />48 <br /> <br />65 <br />5285 . 2 <br /> <br />1169.1 <br />1231 <br />1263.1 <br />5284 <br />5273.9 <br />5275 <br />5284 <br /> <br />1263.1 <br />5281.8 <br />1169 <br />5285.2 <br />5281.8 <br />5281., <br />980 <br />1192 <br />1233 <br />1284 <br /> <br />1169 <br />1 <br /> <br />5295.2 <br />5287.3 <br />5297.2 <br />5284 <br />5274.1 <br />5274.9 <br />5284 <br /> <br />1. 56 <br /> <br />20 <br /> <br />1169 <br />1201 <br />1263 <br />891 <br />1192 <br />1231 <br />1263.1 <br /> <br />25 <br /> <br />Xl 14 2 <br />X2 <br />X3 10 <br />BT -8 <br />BT <br />BT <br />GR 5284 <br />GR 5278 <br />GR5274.9 <br />GR5285.4 <br /> <br />SB <br /> <br />I <br /> <br />I <br /> <br />Bddge <br />into Northbound lanes from <br /> <br />Up.tream Face of Colorado State Hwy 119--Ea.t <br />(East Bridge contain. Northbound lanes merging <br />We.t bridge.) <br />Bridge .kew adjusted manually Encroachment. <br />between bridge.. <br /> <br />I <br /> <br />.imulate effective flow ar&a <br /> <br />I <br /> <br />blockage <br /> <br />100% <br /> <br />to model <br /> <br />35 <br />5306 <br />5296.3 <br /> <br />low chord <br />,@l661.3 <br /> <br />35 <br />1990 <br />5300.2 <br /> <br />Up.tream Face of 47th Street <br />Culvert at Channel Conterline - artificial <br />actual low chord 5298.3@1658.7 5298 <br />Pede.trian Underpa.s - 0% blockage <br />190 26 1550 1732 <br /> <br />35 <br /> <br />* <br />* <br />* <br />. <br />Xl <br />X3 <br />BT <br /> <br />1157 <br />1265 <br />1560 <br />1832 <br />1898 <br /> <br />5282 <br />5278.5 <br />5280 <br />5284 <br />5286 <br /> <br />1142 <br />1207 <br />1530 <br />1600 <br />1890 <br /> <br />91 <br /> <br />5284 <br />5278 <br />5280 <br />5282 <br />5288 <br /> <br />105 <br />1352 <br />1055 <br />1200 <br />1498 <br />1782 <br />1875 <br /> <br />105 <br /> <br />5284 <br />5277 . 8 <br />5280.3 <br />5282 <br />5289.6 <br /> <br />1265 <br />1142 <br />1035 <br />1191 <br />1460 <br />1740 <br />1862 <br /> <br />1165 <br /> <br />5284 <br />5278 <br />5280 <br />5:282 <br />5289.4 <br /> <br />30 <br /> <br />1000 <br />1165 <br />1352 <br />1658 <br />1854 <br /> <br />Xl 145 <br />X3 10 <br />GR 5286 <br />GR 5280 <br />GR 5279 <br />GR5281.1 <br />GR 5288 <br /> <br />I <br /> <br />B-3 <br /> <br />5296 <br /> <br />5300 <br /> <br />1658 <br /> <br />1658 <br /> <br />5300 <br /> <br />5300 <br /> <br />1658 <br /> <br />-16 <br /> <br />I <br /> <br />I <br />
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