EP 1110-2-11
30 Nov 94
Figure 5-1. Schematic of siphon system, Kankakee River, IL
Figure 5-2. Map of meltout
c. An environmentally and economically beneficial floating structure (Figure 5-4) was designed and installed
upstream of the city on the Allegheny River to quickly form a stable ice cover to suppress further frazil generation and
minimize excessive deposition in the trouble area. Discharge at an upstream dam was decreased during freezeup to allow
the rapid formation of a stable ice cover at the boom. The floating boom was installed during the 1982-83 winter at a
5-2
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