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The nearly entire length of the river is navigable, with the flow controlled by locks and weirs. This isn't to minimize their achievement, but they didn't have
by scatters 3y ago
The nearly entire length of the river is navigable, with the flow controlled by locks and weirs. This isn't to minimize their achievement, but they didn't have to contend with rapids, shallows or swamps like the river would have had back in the stone age.