5 (0 15 20 25 5 10 « 20 25 5*0 15 2025 5 K) 15 20 25 51062025 5 10 15 20 25 



MAT JUNE JULY AU6UST SEPTEMBER OCTOBER 



Figure 2. — Tailwater elevations, Rock Island Dam, May 1 to October 30, 1963. 



i i i i i I i i i i i i i i i i i i i r 



I :■ l I I I I i l I I I I I I I I I l I I I I I , I I I l I I I I I I I 



5 n 15 20 25 5 O 15 20 25 5 10 15 20 25 5 10 15 20 25 5 K) 15 20 25 5 to a 20 25 



MAT JUNE JUCT AUGUST SEPTEMBER OCTOBER 



Figure 3.~Daily river discharge. Rock Island Dam, May 1 to October 30, 1963. 



20 



