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<br />
<br />.
<br />
<br />from the Pa~iflc Ocean enters the area. Most of this precipita-
<br />tion falls on the upper slopes and over the Continental Divide
<br />in the Form of snow, AvaUable .acenda indicate that snowmelt
<br />has not contributed significantly to floOd occurrences on the
<br />St. Charles River.
<br />
<br />.
<br />
<br />TABLE 4
<br />
<br />ST. CHARLES RIVER NEAR PUEBLO, COLORADO
<br />RECORDED fLawS ABOVE BANKfULL STAGE
<br />
<br />labul..r date for 1921-1925 period was FurniShed by the Colorado
<br />State Engineer for 1I gaging station at Or near Mile 1.47; drain.
<br />age area: 482 square miles; zero of gage: 4,570 feet (from
<br />topographic map). Dete for 1942-1955 period was recorded or
<br />estimated at "the U.S. Geological Survey gllglng station et the
<br />27th Lene bridge, Mile 8.31; drainage area: 468 square miles;
<br />rere of gage = 4,690 feat (from topographic map).
<br />
<br />Date of Crest
<br />
<br />Cage
<br />Heiaht
<br />feet
<br />
<br />Peak
<br />D16charae
<br />c.Ls.
<br />
<br />June4,19Z1
<br />August 1, 1923
<br />July 23, 1925
<br />
<br />56,000
<br />12,200
<br />8,860
<br />
<br />,
<br />
<br />April 19, 1942
<br />July 18, 1944
<br />July 10, 1945
<br />AU9ust3,1945
<br />August ~, 1~4S
<br />August 7, 1945
<br />AU9ud8,1945
<br />August 26, 1946
<br />June 19, 1947
<br />June 13, 1948
<br />AugustlJ,1948
<br />July 26, 1950
<br />Septamberl0,19s0
<br />August3,1951
<br />August2,1953
<br />August15,1953
<br />May19,1955
<br />
<br />5,570
<br />4,830
<br />7,000
<br />5.150
<br />7,720
<br />6,890
<br />6,870
<br />4,510
<br />10,800
<br />4,500
<br />12,300
<br />16,100
<br />4,400
<br />7,350
<br />5,280
<br />7,300
<br />20,600
<br />
<br />6.45
<br />5.58
<br />6.50
<br />6.De
<br />6.84
<br />6.30
<br />6.25
<br />4.78
<br />7.10
<br />5.20
<br />8.52
<br />9.20
<br />5.15
<br />6.48
<br />5.58
<br />6.46
<br />7.53
<br />
<br />.
<br />
<br />20
<br />
<br />
<br />TABLE 5
<br />
<br />HIGHEST TEN RECORDED flOWS IN ORDER Of MAGNITUDE
<br />
<br />ST. CHARLES RIVER NEAR PUE8LO, COLORADO
<br />
<br />Order Gsge Peak
<br />Number Oate of Crest Heiaht DischarQe
<br /> feet c.f.s.
<br />1 June4,1921 55,000
<br />, May 19, 19S5 7.53 20,500
<br />3 July 26,.1950 9.20 15,100
<br />, August 13, 1948 8.52 12,300
<br />, Augustl,1923 12,200
<br />6 June 19, 1947 7.10 10,800
<br />, July 23, 1925 8,860
<br />, August 5, 1945 6.84 7,720
<br />, Auguet 3, 1951 6.48 7,350
<br />10 August.16,1953 6;45 7,300
<br /> Plate 2 shows the peak flo" discharges 0", yearsofoc_
<br />currenCe of tf1ef1ighestten recorded fle~e since 1921 .t .tream 91l9~
<br />
<br />ing stations located either near the river's mouth or at the 27th
<br />Lenebridge.
<br />
<br />flooded Areas
<br />Definitive data on velocities, ma8nitude, end du.ation
<br />"renot nvnilable for past floods on theSL Charlesiliver. 8eceu:l'e
<br />of this and changing channel conditions, the areas inundated by his_
<br />torical flood~ Cdfl"U!. be accur..tely delineated. However, based on
<br />descriptions by long~term residents, it is considered probable that
<br />the areal extent of the 1921 flood would approximate that ef the
<br />Intermediate Regional FlOOd shown on Plates 4 thrOUgh 10.
<br />
<br />Flood Description"
<br />Avsilable hinterical records of floods in the Pueble
<br />region sinco the mid-1800's are primarily informative on flooding
<br />effects of the Arkansas River and Fountain Creek. References to
<br />the smaller tributary ~treams in the erGa appear only rarely in
<br />
<br />"
<br />
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