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To: gg cox who wrote (139291)2/15/2018 11:30:52 AM
From: Elroy Jetson  Respond to of 219172
 
Jakarta is indeed sinking because of excess pumping from the sort of water wells of the sort they're drilling in Cape Town. Mexico City has suffered hundreds of feet of subsidence because they too have been pumping out ground water far faster than it's recharged.

In Los Angeles excess water well usage was causing salt-water intrusion into coastal wells. Even without wells you can use satellites to measure how much lower California gets during droughts, but the Sierra Nevada mountains get higher because there's less snow weighing them down.

In California's water plan, cities with wells now need to recharge them when water is plentiful. This includes Palm Springs which is pumping water from the Colorado River into their depleting underground aquifers. They're being sued to reduce the salinity of the water they're injecting to the same low salinity of the water they're pumping out of the aquifer, which is a real long term issue.