8,000 



7.000 - 



60o 



z 



056 



52 



o48 

 o47 o59 



049 



_L 



_L 



_L 



400 600 800 1,000 1,200 1,400 



ESCAPEMENT (THOUSANDS OF FISH) 



Figure 10.— Egegik River, 1944-60 (see fig. 2). 



1.600 



1700 



streams with small runs: the Nushagak- Mul- 

 chatna and north side of Alaska Peninsula. 

 Mean returns for several years were used 

 here, as in Ossiander (footnote 1). Escape- 

 ments that corresponded to Branch or Alag- 

 nak return years 1958-60 were not available; 

 therefore, I substituted the mean returns from 

 1955-6Z escapenaents . 



Comparison of Hindcasts, Published 

 Forecasts, and Actual Runs 



plots of hindcasts and actual runs (table 2, 

 fig. 13) reveal some rather large discrepan- 

 cies. The most serious of these was in 1 964- 65 

 and resulted prinnarily from the unusual age 

 pattern of the return fronnthe I960 escapement 

 to the Kvichak system. The huge 1965 Kvichak 

 return was almost entirely 5-year fish (Royce, 

 1965).' Thus the return from the I960 brood 



500 1,000 



ESCAPEMENT 



1,500 ^000 2,500 



(THOUSANDS OF FISH) 



Figure 11.— Ugashik River, 1952-60 (see fig. 2). 



Royce, William F. 1965. The Bristol Bay sockeye run 

 in 1965. Univ. Wash., Seattle, Coll. Fish., Fish. Res. Inst. 

 Circ. 239, 7 pp. (Processed.) 



