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Dec 12, 2016 at 14:01 vote accept kingledion
Dec 7, 2016 at 5:37 comment added Keith McClary Pre-industrial comparisons may not be a guide, since rivers have been channelised so their deltas do not flood, or dammed or diverted so that not much water reaches the delta.
Nov 30, 2016 at 11:21 history answered Gordon Stanger CC BY-SA 3.0