Camp Mystic’s leader got a ‘life threatening’ flood alert. They evacuated an hour later.
chiliedogg @ chiliedogg @lemmy.world Posts 0Comments 2,661Joined 2 yr. ago
chiliedogg @ chiliedogg @lemmy.world
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There's some nuance on whether it's floodplain or floodway.
It gets technical, but the easy answer is that floodplain us where the waters will rise, while floodway is the path along which water is intended to travel. Lots of the time, the floodplain and the floodway are the same thing, but not always.
Development in the floodplain can sometimes be achieved through a floodplain development permit with a no-rise certification (there will be no net rise of water level in event of a flood caused by the development in the floodplain)
Development in the floodway is generally a hard no, because the floodway is where you want the water to go, and you want water flowing fast in the floodway to clear space for the water coming in behind it. Putting structures on stilts increases friction and slows water down, causing it to back up more upstream.