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93 billion gallons of fresh water falls on Los Angeles every year. (12 inches / y over the whole surface area[1]) They have ~2 million households[2], and a hou
by jvanderbot 3y ago
93 billion gallons of fresh water falls on Los Angeles every year. (12 inches / y over the whole surface area[1])
They have ~2 million households[2], and a household uses an average of 3,000 g/m or 36,000 g/y/h or about 80 billion gallons / y for all households.
Huge coincidence, that's pretty close to balanced out.
And yet, we shuffle the rainfall to the ocean and pray for snowpack in the mountains and protest Nestle and Almond farmers.
1. https://www.wolframalpha.com/input?i=%28%2812+inches+*+los+angeles+surface+area%29+in+gallons+%29 https://www.wolframalpha.com/input?i=%28%2812+inches+*+los+a...
2. https://www.wolframalpha.com/input?i=households+in+los+angeles https://www.wolframalpha.com/input?i=households+in+los+angel...
- donkeysquid 3y agoOnly a fraction of that can be captured
- persolb 3y agoI’d agree for a lot of places heavy on greenery… but LA? The city itself seems to have a very small percentage of greenery. I’m assuming the rest is mostly captured via sewers just to prevent flooding.
- jvanderbot 3y agoThis is true. A better designed city could capture more.
- voisin 3y agoWhy is that? If it is slowed down and sunk into the earth it would add to the aquifers, no? Going off the great book “Rainwater Harvesting in Drylands & Beyond”