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<br />NUMBER
<br />
<br />LOCATION
<br />
<br />~HDDLE S1. VRAIN
<br />
<br />At Peaceful Valley
<br />(S.H. 72)
<br />
<br />2
<br />
<br />At mouth
<br />
<br />Above
<br />Below
<br />
<br />Above
<br />Belo~
<br />
<br />TABLE
<br />
<br />DRAINAGE BASIN ARC:AS IIIJD
<br />CORRESPOND r NG 0 I SCHMtGI:~;
<br />
<br />DRAINAGE
<br />AREA
<br />( sq. mi.)
<br />
<br />18.7
<br />
<br />32.4
<br />
<br />66.7
<br />
<br />92
<br />
<br />99
<br />
<br />99
<br />
<br />211
<br />
<br />212
<br />
<br />243
<br />255
<br />
<br />256
<br />341
<br />
<br />351
<br />
<br />---------..-----------------------------.. ._-------.----
<br />
<br />SOUTH ST. VRAIN
<br />
<br />3
<br />
<br />ConfLuence of MiddLe
<br />St. Vrain
<br />
<br />10.Y[t.F<:
<br />(CF~,;
<br />
<br />4?C
<br />
<br />5q~
<br />
<br />1 ,2;~iJ
<br />
<br />1,4(1)
<br />
<br />1,60-]
<br />
<br />680
<br />
<br />2,04':)
<br />
<br />2,030
<br />
<br />3,66l
<br />4,11C
<br />
<br />4,11l1
<br />5,210
<br />
<br />5,25(1
<br />
<br />50-YEAH
<br />(CFS)
<br />
<br />860
<br />
<br />1,430
<br />
<br />2,790
<br />
<br />3,750
<br />
<br />4,200
<br />
<br />2,000
<br />
<br />5,576
<br />
<br />5,560
<br />
<br />7,430
<br />8,240
<br />
<br />8,240
<br />10,950
<br />
<br />10,950
<br />
<br />100-YEAR
<br />(CFS)
<br />
<br />'1,180
<br />
<br />'~, 000
<br />
<br />.3,990
<br />
<br />5,430
<br />
<br />6,000
<br />
<br />:1,100
<br />
<br />11,880
<br />
<br />8,1130
<br />
<br />9,1120
<br />10':;80
<br />
<br />1 0, ~;80
<br />14,1150
<br />
<br />14,850
<br />
<br />The numbers indicated are shown on Figure 1, illustrating tIE' s;)ecif'lc point locations
<br />of the drainages areas described above.
<br />
<br />4
<br />
<br />A t mouth
<br />
<br />NORTH ST. VRAIN
<br />
<br />5
<br />
<br />Buttonrock Inflow
<br />
<br />6
<br />
<br />Buttonrock SpiLlway
<br />
<br />ST. VRAIN CREEK
<br />
<br />7
<br />
<br />Confluence of Nor"th &
<br />South St. Vrain Creeks
<br />
<br />8
<br />
<br />l.yons Gauge
<br />
<br />9
<br />
<br />Dry Creek #1
<br />
<br />10
<br />
<br />Lefthand Creek
<br />
<br />11
<br />
<br />BouLder County Line
<br />
<br />8
<br />
<br />:iOQ.YEAR
<br />CCFS)
<br />
<br />2,23G
<br />
<br />(+,070
<br />
<br />8,560
<br />
<br />1 < ,900
<br />
<br />1j ,000
<br />
<br />i,600
<br />
<br />20,260
<br />
<br />20,140
<br />
<br />19,940
<br />21,200
<br />
<br />;~. ,200
<br />;,a,670
<br />
<br />;~a/670
<br />
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