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<br />Pro'ect
<br />
<br />Waterloo
<br />Hooper
<br />Clarkson
<br />
<br />"e~t Poi nt
<br />Pi 1ger Creek
<br />
<br />Ma(jis,'n
<br />
<br />~,,,.t.J1 ~
<br />
<br />CurporiltionGulch
<br />
<br />f'lorce
<br />
<br />Meadow Grove
<br />
<br />Columbus
<br />Broken Bow
<br />
<br />Junes Creek
<br />
<br />Spring Creek
<br />(Dawson)
<br />Cure Creek
<br />
<br />Brule
<br />
<br />Verd8~Lane
<br />Drain
<br />Wlldl'lorse
<br />
<br />GerIng Valley
<br />
<br />$altCreek
<br />
<br />Oak~Mlddle
<br />
<br />Upper Salt-
<br />Swedeburg
<br />Cottonwood
<br />
<br />Schuyler
<br />
<br />Sellwood
<br />
<br />,Oll2 G 63
<br />
<br />Table 2-6
<br />
<br />EXISTING WATER PRCJECTS
<br />
<br />PROVIDING FI"OOD
<br />
<br />
<br />CE&SCS
<br />
<br />C'
<br />CE
<br />c,
<br />
<br />CE
<br />scs
<br />
<br />CE
<br />
<br />Co
<br />
<br />scs
<br />
<br />CE
<br />
<br />C'
<br />
<br />C'
<br />CE
<br />
<br />scs
<br />
<br />sos
<br />
<br />scs
<br />
<br />scs
<br />
<br />SCS
<br />
<br />scs
<br />
<br />CE
<br />
<br />scs
<br />scs
<br />
<br />SCS
<br />
<br />CE
<br />
<br />SCS
<br />
<br />1967
<br />1967
<br />1965
<br />""
<br />1967
<br />
<br />Elkhorn R.
<br />Elkhorn R.
<br />Mid. Fork
<br />Maple Cr.
<br />Elkhorn R.
<br />Pilger Cr.
<br />
<br />Waterloo
<br />Hooper
<br />Clarkson
<br />
<br />West PoInt
<br />PIlger
<br />
<br />Madison
<br />
<br />l'lorfolk
<br />
<br />NorfOlk
<br />
<br />Pierce
<br />
<br />Meadow
<br />Grove
<br />
<br />CotlTROL
<br />
<br />Oescrl Tion
<br />
<br />
<br />ElkhornSubbasln
<br />
<br />levee.
<br />levee.
<br />levee and
<br />
<br />4.1 miles of
<br />2.1 miles of
<br />1.9 mi les of
<br />Improv_nt.
<br />2.0 mIles of levee.
<br />Two floodwaTer-retarding sfrtlctures with 924 AF,
<br />3.4 IlIlles of dikes end 3.1 miles of channel
<br />Improvement.
<br />1.6 miles of channel improvements on Union Creek
<br />and 0.4 miles of channel Improvements on Taylor
<br />Creek.
<br />7.2 miles of levee and 4.2 miles of channel
<br />Improvement.
<br />One floodwater-retarding ano recreation
<br />structurewrth965AF.
<br />2.6 mIles of levee and Q.6 miles of channel
<br />relocation.
<br />1.1 miles of Channel Improvement.
<br />
<br />1.6 miles of channel
<br />
<br />LoupSubbasin
<br />Columbus 5.4 miles of levee.
<br />Ikoken Bow 1.0 mIles of levee and 2.7 mi les of channel
<br />improvement.
<br />
<br />16'
<br />'00
<br />250
<br />
<br />300
<br />'"
<br />
<br />100
<br />
<br />860
<br />
<br />'00
<br />
<br />'.300
<br />50
<br />
<br />1,500
<br />170
<br />
<br />1.090
<br />15,060
<br />51
<br />202
<br />
<br />320
<br />
<br />34,000
<br />
<br />50,000
<br />
<br />3,030
<br />
<br />2,245
<br />
<br />2,516
<br />
<br />200
<br />
<br />11,610
<br />
<br />250
<br />'00
<br />100
<br />
<br />100
<br />100
<br />
<br />14
<br />
<br />SPFtU
<br />
<br />200
<br />
<br />100
<br />25
<br />
<br />200
<br />50
<br />
<br />25
<br />200
<br />
<br />100
<br />
<br />100
<br />
<br />17
<br />
<br />100
<br />
<br />Average
<br />Annual
<br />BenefIts
<br />1974
<br />~o 11 il r,>
<br />
<br />
<br />1966
<br />
<br />Union &
<br />Taylor Crs.
<br />
<br />Upper Platte Subbasin
<br />Osceola Two floodwater-retarding strll~urE'S 1/lth 293 AF
<br />and 4.3 miles of channel Ill'(lrovelllllnt.
<br />Lexi ngton Four floOdwatilr~retardlng structures with
<br />6,969AF.
<br />Ogallala One floodwate(wretarding stnJ(;ture with
<br />287 AF.
<br />Brule One floodwaTer-retardIng sTr...cture with
<br />1,719 AF, 0.6 mIle of dike, and 1.1 miles of
<br />channel Impro\lement.
<br />SIQ'ney One floodwater-retardIng sTructure wIth
<br />105 AF.
<br />Bayard Three floodwater-retarding s.tructures with
<br />3,711AF.
<br />Gering Nine dams wlt/l 5,532 AF, 24 concreTe drop
<br />structures, 7 culvert drop structures,
<br />0.4 miles of rock lining, and other Channel
<br />Improvements.
<br />
<br />1969
<br />
<br />Salt Cr. oS LinCOln
<br />Trlbs.
<br />
<br />Lower PlaTte Subbasin
<br />8 mi les of levees and 6 miles of channel
<br />Improvement a1 Lincoln plus 10 upstream
<br />dams wiTh 193,000 Af.
<br />15 floodwater-'retardlng structures wIth
<br />6,086 AF.
<br />42 floodwate....retardlng structures with
<br />16,094 Ar.
<br />8 floodwate....retardlng structures wltl'l
<br />2,I92AF.
<br />1.7 miles of levee and 1.0 mIles of
<br />stone dike.
<br />II floodwater~retardlng structures with
<br />3,116Af.
<br />
<br />100
<br />
<br />50
<br />
<br />24,400
<br />22,000
<br />11,100
<br />
<br />24,40::.
<br />14,600
<br />
<br />25,600
<br />
<br />345,300
<br />
<br />160,700
<br />
<br />25,600
<br />:W,700
<br />
<br />148,600
<br />97,600
<br />
<br />16,300
<br />
<br />282,21)0
<br />2,900
<br />
<br />11,700
<br />
<br />6,900
<br />
<br />27,600
<br />
<br />1,245,000
<br />
<br />100 to SPF W 1,719,000
<br />
<br />25 32,500
<br />50 296,600
<br />
<br />100 95,900
<br />100 102,500
<br />
<br />25 119,000
<br />
<br />1968
<br />1971
<br />,964
<br />
<br />North Fork
<br />Elkhorn
<br />Corp, GulCh
<br />
<br />l'lorth Fork
<br />Elkilorn
<br />Buffalo Cr.
<br />
<br />1956
<br />1969
<br />1965
<br />1970
<br />1963
<br />
<br />OakwMlddle Lincoln
<br />Creeks
<br />Solt Cr. Swedeburg
<br />Trlbs.
<br />Cottonwood Wahoo
<br />Creek
<br />Platte & Schuyler
<br />lost Cr.
<br />Bellwood Bellwood
<br />Trlbs.
<br />
<br />d!Averilge recurrence i~terval of project design flood.
<br />~!Stilndard Project FloQd protection with il recurrence interVill far in excess of 100 yearS.
<br />
<br />1973
<br />
<br />1972
<br />1975
<br />
<br />Loup R.
<br />,",udCr.
<br />
<br />~t North Platte being exceeded 32 times in the 46 years prior to
<br />
<br />1"71
<br />
<br />Jones Cr.
<br />
<br />construction of Lake McConaughy in 1941 and only twice (1971 and
<br />
<br />"..
<br />
<br />Spring Cr.
<br />
<br />1973) in the 33 years since 1941.
<br />
<br />1967
<br />1970
<br />
<br />Cure Cr.
<br />
<br />Brule
<br />Canyon
<br />
<br />1971
<br />1966
<br />1969
<br />
<br />Verde-
<br />Lane
<br />WIldhorse
<br />Canyon
<br />Gering
<br />Oraln
<br />
<br />2-33
<br />
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