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Table 2 Three rivers compared by history of modifications

From: Conservation potential of North American large rivers: the Wabash River compared with the Ohio and Illinois rivers

Modification Wabash River Illinois River Ohio River
Recent land-use Agriculture Agriculture Mixed agriculture and forest
Hydrologic alterations Monthly magnitude, high- and low-pulse frequencies, minimum flows, fall rate Monthly magnitude, 3-day, 7-day, and 30-day minimum duration; 30-day and 90-day maximum duration; high-pulse duration, rise rate, fall rate Monthly magnitude, duration, high- and low-pulse frequencies, fall rate, rise rate
Invasive species effects Minor: bigheaded carps Major: bigheaded carps Minor: bigheaded carps
Native fish recovery since CWA Strong Strong ?