Many of the gates will be installed in remote areas that lack electricity, so they can't be operated remotely or automatically. That means U.S. agents need to leave them open during "monsoon" flood season, creating gaps for smugglers & migrants requiring agents to monitor them
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The flood gates poke holes in Trump’s vision of an impermeable man-made structure spanning hundreds of miles across western deserts and mountains. But reality is border region is traversed by rivers channels and stream beds that turn into raging torrents of sediment and debris
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Putting a metal structure in the path of these floodwaters is madness, and the government learned that lesson the hard way, after flash floods tore down Arizona border fencing in 2011 and 2014, requiring costly repairs
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Now, at sites along the border where contractors are racing to install Trump's barrier, crews have been leaving gaps at low areas and dry creek beds. And at larger water crossings like the San Pedro river, it's unclear whether govt will be able to put any kind of structure at all
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I'll be posted a few other photos illustrating the engineering challenges of the border region's hydrology, and the risks of damage to desert landscapes and the structure itself.
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"Six years earlier, monsoon rains had flooded the downtown Nogales, Sonora, a city of about 210,000, trapping merchants in their stores, causing $8 million worth of damage, and drowning two people."https://qz.com/1353798/the-us-mexico-border-walls-dangerous-costly-side-effect-enormous-floods/ …
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The ecological disaster that is Trump’s border wall: a visual guide https://www.vox.com/energy-and-environment/2017/4/10/14471304/trump-border-wall-animals?utm_campaign=vox&utm_content=entry&utm_medium=social&utm_source=twitter … via
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Oh...well now, that’s just too bad.



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