As concerns grow, more aging dams are replaced with rock rapids to let rivers flow
As concerns grow, more aging dams are replaced with rock rapids to let rivers flow
www.mprnews.org As concerns grow, more aging dams are replaced with rock rapids to let rivers flow
In about 75 Minnesota locations, old dams have been removed and replaced with staircase-like rapids designed to allow the river to flow more freely and to avoid costly dam repairs — or worse, a collapse.
In about 75 Minnesota locations, old dams have been removed and replaced with staircase-like rapids designed to allow the river to flow more freely and to avoid costly dam repairs — or worse, a collapse.
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