Laserfiche WebLink
<br />" <br /> <br />The dike system would p~event flood flows from reaching the <br />Riverside Cemetery along with the associated overflow into <br />sterling and across the highway and railroad in that vicinity. <br />An additional 2900 cis, above present conditions, would be forced <br />through the Pawnee Creek highway and railroad bridges (100 yr). <br />Approximately 1400 cis would overflow the highway and railroad in <br />this vicinity that would not occur under present conditions. <br />There would be an increase in water surface elevation of about <br />3.1 ft at the Pawnee Creek bridge. An increase of 340 cfs fro~ <br />present conditions would overflow the highway and railroad near <br />Atwood. This would raise the water surface elevation across the <br />railroad near Atwood by very little. <br />This dike system would benefit the Town of Sterling; however, it <br />shOUld be understood that a tradeoff would be additional flood <br />water discharge and depth along the lower reach of Pawnee Creek <br />to Atwood. <br /> <br /> <br />Pawnee Creek watershed - Dike System Cost <br /> <br />--------------------------------------------------------------- <br />Location Volume Const Eog proj Land Total "M <br /> Fill Cost Cost Admin Right Instal " <br /> " S S S $ S $ <br />--------------------------------------------------------------- <br /> 11 <br />West Dike 14500 70300 9350 11950 14000 104100 m <br /> V ,f <br />East Dike 15960 557040 78040 94'190 12000 '1418'10 6250 <br />South Dike 3374 12680 1770 2150 5000 21600 '" <br /> 'f <br />Total 33834 640020 89660 108890 29000 867570 7150 <br />--------------------------------------------------------------- <br /> <br />o <br />. <br />, <br />" <br /> <br />. <br />,', <br />-.:::,.."..... <br />~". <br />"'~'I) <br />, <br /> <br />. <br />. <br />" <br />, <br />. <br /> <br /> <br />", .... ~1-"no:> <br /> <br />~l <br />-=rZ':- <br /> <br />11 Includes $16000 fo~ 4 irrigation conduits under the dike <br />11 Includes 15340 cu yd earthfill and 620 cu yd of reinforced <br />concrete <br />II Includes $5800 for irrigation conduit, $435240 for concrete <br />wall and $58500 for special structure at highway and railroad <br />11 O&M (annual cost assumed to be) 1 percent of construction cost <br />~I InCludes 620 cu yd of reinforced concrete <br />Note: Rock rip rap may be needed along the downstream railroad <br />slope at certain locations. Costs for this are not included <br />here. <br /> <br /> 0 <br /> . , <br /> . , . <br /> , . , <br /> . - <br /> , 0 <br /> , > <br /> > 0 <br />0 . , <br />, . . , <br /> . <br />w . <br />" . <br />w , <br />. . . <br />" , . <br /> . . 1 <br /> . , <br /> , - . <br /> , , , <br /> , <br /> <br />Further project studies will be needed to evaluate econo~ic <br />feasibility and project effects if this dike sY5te~ we~e to be <br />pursu@d. <br /> <br />, <br /> <br />- <br /> <br />. J <br /> <br />, <br />- <br />. <br />" <br />. <br /> <br />", <br /> <br />" <br />" <br />'. <br /> <br />. <br />, <br /> <br />, <br />. <br />. <br />. <br />. <br /> <br />. <br />, <br /> <br />~~,...,o:> I <br />, <br />~!I <br /> <br />J <br /> <br />'....'" <br />....... r~ <br />1...,/-.. <br />'. <br /> <br />.."". <br />. <br /> <br />\) <br /> <br />,....Il' <br />......... <br /> <br /> 24 <br /> > <br /> 0 <br /> 0 <br /> " <br /> , <br /> " <br /> Z <br /> Z W <br /> " " C <br /> W U W <br /> " " <br /> " W " <br />. " w z <br />0 " Z " <br />" > C <br />. > " <br /> 0 " Z <br /> " " <br /> " " <br /> " <br /> " <br /> 0 <br /> 0 <br /> 0 <br /> " <br /> "" <br /> <br />. <br />. <br />. <br />. <br />- <br />, <br /> <br />, <br /> <br />o <br /> <br />~~" 0::1 <br />