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Originally Posted by Undertoad
Precipitation AND water deficit. Kay. But right next to each other?
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Not arguing the validity of the chart, as I know nothing about it. But for what it's worth, flooding and drought frequently go hand-in-hand around here. What happens is the drought makes the dirt hard and packed, so when the rain eventually comes it takes longer to soak into the ground and becomes runoff instead. Once the street drains are overrun, you're fucked--even a normal rain can turn into a damaging flood, especially if an area has been overly developed with too much impervious cover (i.e., non-absorbent concrete covering most of the ground instead of leaving enough open fields.)