Quantcast Table 1. Recurrence interval by discharge and duration on upper Missouri River

 
  
 
Appendix B: Bioengineering for Streambank Erosion Control -- Guidelines
Table 1. Recurrence interval by discharge and duration on upper Missouri
River*
Of Not
Occurring
Duration
Discharge
6 Months
60 Days
1 Day
(60 Days)
60,000 CFS
---
1/100 Yrs.
1/20 Yrs.
99%
50,000 CFS
1/100
1/10
1/5
90%
40,000 CFS
1/10
1/3
1/2
67%
35,000 CFS
1/3
1/2
1
50%
30,000 CFS
1/2
1
1
1%
25,000 CFS
1
---
---
---
(Normal Flow Levels) - occurs generally from April 15 - May 15 until No. 15
CFS = Cubic feet per second
* From Logan et al. (1979 op cit.)
Figure 2. River levels and flows of upper Missouri River below Garrison
Dam
B-10

 


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