35
30
25
20
15
10
5
0
Figure 9. Histogram of discharge deficit
2
4
6
8
10
12
14
16
18
20
0
3/s)
maximums, Yankton to Sioux City.
MaMaximuDisDharharge Detic1t0(0t0 /s)
ximum m cisc ge Deficif ( i f 3ft
3
14 x 103
14 x 10
12
12
10
10
8
8
6
6
4
4
2
2
0
0
2
5 10 20
100
2
5 10 20
100
Return Interval in Years
Return Interval in Years
Figure 10. Return interval of the annual maxi-
Figure 12. 1 15 January probabilities.
mum discharge deficit.
14 x 103
14 x 103
12
12
10
10
8
8
6
6
4
4
2
2
0
0
2
5 10 20
100
2
5 10 20
100
Return Interval in Years
Return Interval in Years
Figure 11. 16 31 December probabilities.
Figure 13. 16 31 January probabilities.
13