|
<br />
<br />OJ2836
<br />
<br />TABLE 1
<br />Hydrologic data base for the Whltebird gaging station. Salmon River, Idaho, U,S, Geological
<br />Survey
<br />
<br />Month
<br />
<br />October
<br />November
<br />December
<br />January
<br />February
<br />March
<br />April
<br />May
<br />June
<br />July
<br />August
<br />September
<br />Annual
<br />
<br />Period
<br />(consecu-
<br />tive days)
<br />
<br />Low flow
<br />I
<br />3
<br />7
<br />14
<br />30
<br />60
<br />90
<br />120
<br />183
<br />
<br />Period
<br />(consecu-
<br />tive days)
<br />
<br />High flow
<br />1
<br />3
<br />7
<br />15
<br />30
<br />60
<br />90
<br />
<br />Monthly and annual mean discharges 1911-1917, 1920-1989
<br />
<br />Standard
<br />deviation Coefficient
<br />(ds) of variation
<br />
<br />Maximum
<br />(cfs)
<br />
<br />8,590
<br />8,250
<br />9,490
<br />8,390
<br />8,100
<br />11,700
<br />27,100
<br />56,000
<br />82,600
<br />35,500
<br />8,890
<br />7,080
<br />17,500
<br />
<br />Minimum
<br />(cfs)
<br />
<br />2,950
<br />3,010
<br />2,750
<br />2,740
<br />2,880
<br />3,520
<br />5,400
<br />10,500
<br />9,530
<br />3,520
<br />2,300
<br />2,490
<br />5,810
<br />
<br />Mean
<br />(cfs)
<br />
<br />4,860
<br />4,960
<br />4,540
<br />4,190
<br />4,440
<br />5,460
<br />11.600
<br />32.100
<br />39.000
<br />13,800
<br />5,430
<br />4,480
<br />11.300
<br />
<br />1,200
<br />1,150
<br />1,250
<br />987
<br />1.040
<br />1.520
<br />4,400
<br />10,100
<br />16,500
<br />7,300
<br />1,710
<br />1,080
<br />2,890
<br />
<br />0,25
<br />0,23
<br />0,27
<br />0,24
<br />0,24
<br />0.28
<br />0,38
<br />0,32
<br />0.42
<br />0,53
<br />0,31
<br />0,24
<br />0,26
<br />
<br />Magnitude and probability of annual flow
<br />based on period of record 1912-1917, 1921-1989
<br />
<br />Percent of
<br />annual
<br />runoff
<br />
<br />3,6
<br />3,7
<br />3,4
<br />3.1
<br />3.3
<br />4,0
<br />8.6
<br />23.8
<br />28.9
<br />10.2
<br />4,0
<br />3,3
<br />100
<br />
<br />Discharge, in cfs, for indicated recurrence interval, in years, and
<br />nonexceedence probability. in percent
<br />
<br />2
<br />50%
<br />
<br />2,670
<br />2,810
<br />3,120
<br />3,370
<br />3,610
<br />3,810
<br />3,960
<br />4,120
<br />4.400
<br />
<br />5
<br />20%
<br />
<br />2,240
<br />2,380
<br />2,660
<br />2,870
<br />3,060
<br />3.240
<br />3.380
<br />3,510
<br />3.710
<br />
<br />10
<br />10%
<br />
<br />2,030
<br />2,180
<br />2.430
<br />2,630
<br />2,790
<br />2.960
<br />3.100
<br />3,230
<br />3,390
<br />
<br />20
<br />5%
<br />
<br />1.870
<br />2,010
<br />2,240
<br />2,430
<br />2,580
<br />2,750
<br />2,890
<br />3,010
<br />3,140
<br />
<br />50
<br />2%
<br />
<br />1,700
<br />1.840
<br />2,050
<br />2,220
<br />2,350
<br />2,520
<br />2,660
<br />2,780
<br />2,870
<br />
<br />Magnitude and probability of annual high flow
<br />based on period or record 1911-1917, 1920-1989
<br />
<br />100
<br />1%
<br />
<br />1.590
<br />1.730
<br />1.920
<br />2,080
<br />2,200
<br />2,380
<br />2,510
<br />2,640
<br />2,710
<br />
<br />Discharge, in cfs, for indicated recurrence interval. in years, and
<br />nonexceedence probability. in percent
<br />
<br />2
<br />50%
<br />
<br />62,000
<br />60,200
<br />56,600
<br />51.600
<br />45,700
<br />36,700
<br />29,500
<br />
<br />I M, T, Hill et aL
<br />
<br />5
<br />20%
<br />
<br />81,900
<br />79,800
<br />75,500
<br />68,900
<br />60,000
<br />47,400
<br />37,800
<br />
<br />10
<br />10%
<br />
<br />93,100
<br />90,800
<br />86.300
<br />78.800
<br />67,900
<br />53,000
<br />42,100
<br />
<br />25
<br />4%
<br />
<br />105,000
<br />103,000
<br />98,300
<br />89.700
<br />76,300
<br />58,700
<br />46,700
<br />
<br />50
<br />2%
<br />
<br />113,000
<br />111.000
<br />106,000
<br />96,900
<br />81.700
<br />62,300
<br />49,500
<br />
<br />100
<br />1%
<br />
<br />120,000
<br />118,000
<br />113,000
<br />103,000
<br />86.500
<br />65,400
<br />51,900
<br />
<br />203 II~_
<br />
|