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DuPage River rapids (3.33560)
Date: 1930 – 1949Type: Photographic image
Description:DuPage River rapids built to raise water level in Lake Jopamaca
Extent: 1 negative
DuPage River dam (3.33567)
Date: 1940sType: Photographic image
Description:DuPage River dam with removable planks to slow water coming into Lake Jopamaca from the DuPage River and prevent silt buildup
Dam torn out in 1982
Extent: 1 negative