KEOKUK DAM 
137 
The indications are that the dam has had no marked effect upon the general 
abundance of drumfish in the river either above or below Keokuk, although it may 
interfere with local nomadic movements. ' 
Fishes that seem not to be affected significantly by the power plant (except 
locally) include nearly all the commercial and game fishes. Fishes that it seems 
likely have suffered real detriment are the river herring (and with it the nigger- 
head mussel), the Ohio shad, the eel, and the blue sucker. It is possible that the 
shovelnose sturgeon also has been affected unfavorably. The Fulton catfish has been 
shut off from the upper 50 or 100 miles of its former range. Fishes that have derived 
benefit from the development of the lake are the paddlefish, catfishes, buffalo fishes, 
carp, black bass, crappie, and bluegill (?). The benefit to the paddlefish may extend 
far up the river; the benefits in the other causes are probably localized, and they 
were far more notable before the Green Bay district was drained. 
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