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FLOOD00742
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Last modified
11/23/2009 1:29:19 PM
Creation date
10/4/2006 9:27:08 PM
Metadata
Fields
Template:
Floodplain Documents
Designation Number
356.03
County
Prowers
Community
Granada
Stream Name
Arkansas River, Wolf Creek
Title
Floodplain Information Report - Granada
Date
7/1/1994
Designation Date
7/1/1994
Floodplain - Doc Type
Floodplain Report/Masterplan
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<br />* An outfall channel beginning at the terminus of the floodway channel about 1600 feet <br />east of the U.S, Highway 385 bridge nOlih of the Town and extending about 7000 feet <br />northeast to the Arkansas River; <br /> <br />* A right bank levee beginning at a nigh point west of Granada, about 1900 feet south <br />of the U.S. Highway 50 bridge over Wolf Creek and extending 10,670 feet around the <br />west and north sides of the Town. At the point of beginning of the outfall channel the <br />right bank levee branches, One brlillCh follows the outfall channel northea~t for <br />7430 feet toward the Arkansas River. The other branch leaves the outfall channel and <br />extends southeast along the South Granada Ditch to a high point about 1/2 mile east of <br />the Town. The top width of the levee is 12 feet which permits access for maintenance, <br />Riverside levee side slope is 3 horij':ontal to I vertical and landside levee side slope is <br />2.5 horizontal to I vertical. Right bank levee height along Wolf Creek provides 4 feet <br />of freeboard above the project desi!in flood water surface; <br /> <br />* A left bank levee beginning just downstream (east) of the U.S, Highway 385 bridge and <br />extending 970 feet along Wolf Creek to the outfall channel and then continuing about <br />6945 feet along the outfall channel to the Arkansas River; <br /> <br />* An extensive channel and levee protection of wire wrapped rock on the right bank of <br />the floodway and the right levee directly across the floodway (east) from the point of <br />entry of Wolf Creek into the floodvtay channel. About 250 feet of wire wrapped rock <br />extending from 3 feet below the chiUlllel inveli to within 4 feet of the levee crest was <br />installed at this location. The protection extends from 171 feet south of the AT &SF <br />Railroad bridge to a point 79 feet north of the AT &SF Railroad bridge, Six foot long <br />by 2 inch diameter steel pipes with spacing of 8 feet longitudinally and 4 feet <br />transversely were driven into the channel and levee to hold the wire wrapped rock in <br />place; <br /> <br />* An entry point into the floodway channel just west of the U.S, Highway 385 bridge for <br />water from the South Granada Ditcll. The South Granada Ditch follows the bottom of <br />the floodway channel to the point of take off of the outfall channel. At this point a pipe <br />through the levee allows low flows to continue in the South Granada Dit<:h which <br />extends in a southeasterly direction; <br /> <br />* Riprap protection on selected sections of the channels and levees; <br /> <br />* Interior drainage facilities including two gated structures ( slide gates) through the levee <br />into the South Granada Ditch; <br /> <br />* Side drainage ditch for agricultural areas to the west of the left bank of Wolf Creek, <br />Drainage enters Wolf Creek through ungated structures, Drainage water from the North <br />Granada Ditch is conveyed to the Arkansas River in a side ditch paralleling the left <br />outfall levee. <br /> <br />5 <br />
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