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I skimmed through the article. Several pictures are also repeated. Would this kind of thing happen before 2020? I don't think so. Either way, I got taught in high school geography that parts of rivers get rebuild all the time. The Maas (Meuse, as Dutch is my native language I say Maas) gets longer due to the corners getting more sharp (due to water and wind erosion). Then at some point, the water might actually go straight between two corners, leading to the part between the two corners (an extra 180 degrees of two corners, though might look like one) getting cut. Sometimes, that doesn't happen (quick enough) and humans need to help nature a bit. Because sometimes, the new part of river tends to reach villages or other parts of society humans want to preserve. So, we interfere. Near Maastricht, there's also a canal next to the Maas, and this can help with deficit or excess water in the Maas. But sometimes, even an extra part of river next to the old river is build. IIRC they do that because the erosion destroyed such parts, that the outcome of the erosion keeps coming back and back in too short amounts of time. So then, it makes more sense to look for a more long term solution. The water and wind erosion were interesting to me back in the days. So, from memory (and I surely am forgetting something here, possibly related to the chemistry of the water/earth), the way it works on low water level the wind on the corners erodes the corners, while on high water level the water pressurizes against the corner, leading to basins in the (wind eroded) corner which itself is part of the domino effect. In other words, it is bound to happen, given time. The river snaking around is bound to happen, and the breach is bound to happen as well. But the breach usually means the river goes to its original pathway (although temporarily). So for a large river as the Nile, it also comes as no surprise Egyptian government (Egypt being the country who benefit from the Nile delta) invests in the Nile. But the main problem the Nile faces is AFAIK related to drought which is related to climate. I'm not sure how they want to fix that. |