BLACKFOOT RIVER 

 NEAR BONNER 



10000 



o 



9000 - 

 8000 

 7000 •- 

 6000 ■■ 



C/3 



f^ 5000 





4000 ■■ 

 3000 ■■ 

 2000 

 1000 

 O 

 10000 



MONTHLY MEAN FLOWS 

 1983 - 1988 



50 % 

 EXCEEDANCE 



GO 11 12 1 



9000 j- 



SOOO 



7000 



^ 6000 + 



2 



St. , — , 



=S ih' 5000 

 ■< o 



M ■ — ' 



a: 



"3 4000 ■- 



3000 

 2000 ■■ 

 1000 - 



o 



MONTHLY MEAN FLOWS 

 1967 - 1972 



50 % 

 EXCEEDANCE 



00 11 12 



2 3 4 5 

 MONTH 



Figure 3, Comparison of mean monthly discharge to 50% exceedance 

 flows at the USGS gauge near Bonner for the years 

 1983-88 (top) and 1967-72 (bottom) . 



