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FLOOD00144
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Last modified
11/23/2009 1:22:05 PM
Creation date
10/4/2006 9:06:44 PM
Metadata
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Template:
Floodplain Documents
County
Logan
Community
Crook
Stream Name
South Platte River
Title
Reconnaissance Report for a Flood and Erosion Control Project
Date
12/1/1985
Prepared For
Logan County
Prepared By
CWCB
Floodplain - Doc Type
Project
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<br />.~ <br /> <br />The floodplain has a number of natural and man-made <br />obstructions to ftreamflow including trees, brush, gravelbars and <br />various other st;:uctures. Without stabilization structures or <br />natural streamba~k armament, the river will continue to migrate <br />in a northerly drection toward the Town of Crook. <br /> <br />Following tl,,,, 1973 flood, the State of Colorado recognized <br />the flooding problems and needs of the community and provided <br />assistance thro~ n the Division of Wildlife. The Division <br />assisted local oZicials with the construction of a number of <br />deflector dikes (jetties) to control stream migration during high <br />flows. <br /> <br />These jettiEI were placed to provide protection to lands <br />located in the l~:t overbank (North) and right overbank(South). <br />Due to high erosi~e flows over recent years the North jetties <br />have been severe:',J eroded and are in poor condition. The <br />South-Side jettiE,3 have been re-conditioned and have been armored <br />with stone rip r2? in 1984. <br /> <br />The Colorado Department of Highways is presently designing <br />new bridge cross.~ngs for State Highway 55. This proposed <br />re-construction c :fers an opportunity to incorporate flood <br />mitigation measu~~s into the design. <br /> <br />Historical ~~ood peak discharges <br />at Julesburg, Co"orado, are: <br /> <br />for the South Platte River <br /> <br />Date <br /> <br />Discharge <br />(C.P.s. ) <br /> <br />'. <br /> <br />Ju, 6 1904 <br />JUi: 11, 1905 <br />Jl:!'. \5, 1909 <br />Ma':: 11, 1910 <br />Ju:: 8, 1814 <br />Ju " 1 , 1917 <br />Ju: 16, 1921 <br />Jun 18, 1923 <br />JU7; 10, 1924 <br />Ju~ 2, 1935 <br />Sep 10, 1938 <br /> <br />6,500 <br />12,400 <br />6,040 <br />18,800 <br />13,400 <br />9,100 <br />30,800 <br />16,000 <br />11,000 <br />31,300 <br />7,980 <br /> <br />-3- <br />
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