Table III-31.--Summary of results of selenium load analysis on North Fork of Solomon River
Location Flow
(cfs)1
Selenium load
(grams/day)
Units selenium load
(grams/cfs/day)
May 19, 1998 (before irrigation began)      
Below Kirwin Reservoir 0.03 0.1 3.3
Sum of all natural tributaries not affected 76.0 1,296 17.0
by irrigation 1.0 33.8 33.8
From irrigated areas 134.0 2,524 18.8
At Portis, Kansas      
August 25, 1998      
Below Kirwin Reservoir 0.17 0.4 2.4
Sum of all natural tributaries not affected 23.3 888 38.1
by irrigation 2.5 60.1 24.0
From irrigated areas 104.0 2,900 27.9
At Portis, Kansas      
1 Cubic feet per second.

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