It is not possible to stop the flow of water completely and the Canadian Falls have never been completely diverted or dried by man action. On March 29th, 1848 in the early morning, the water in the upper Niagara River stopped (flowing), (bringing) to a stop the mills (operating) from the power of water. Only a trickle of water was finding its way down to the Falls. After (investigating) the river, they found the cause of the block to be ice at the mouth of the Niagara River by Lake Erie. Due to a severe winter and a North Westerly wind (pushing) the ice flow into the river, the phenomenon lasted for some 40 hours. Only after a shift of wind to the East did the ice jam let go and things returned to normal.

* trickle: 실개울
ing 같은 성격이 operating과 pushing이라는데

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