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100 acre coffer dam largest ever constructed in America

Summary by Daily Gate City
On July 15, 1875, notice was given to raft pilots that the “channel on the Iowa side of Montrose Island and below, was obstructed by anchoring cribs and a coffer dam put in by the U.S. Government preparatory to deepening…

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Daily Gate CityDaily Gate City
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100 acre coffer dam largest ever constructed in America

On July 15, 1875, notice was given to raft pilots that the “channel on the Iowa side of Montrose Island and below, was obstructed by anchoring cribs and a coffer dam put in by the U.S. Government preparatory to deepening…

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Acadie NouvelleAcadie Nouvelle

100 Years Ago, Began the Construction of the Grand Sault Dam

100 years ago, the construction of one of Grand Sault's most emblematic structures began.

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Daily Gate City broke the news on Thursday, August 13, 2026.
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