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New Maps Show Spread and Impact of Drought On California Forests (latimes.com)
An anonymous reader writes: According to a new study 58 million trees are dead or dying due to the California drought and hundreds of millions could die if the conditions persist. The LA Times reports: "The researchers used an airplane, high-tech remote sensing technology and satellite imagery to produce the first maps that show how much water the state's trees have lost. Virtually every forest has been affected in some way, said study leader Greg Asner, an ecologist at the Carnegie Institution for Science at Stanford University. Asner said he was struck by the 'sheer degree of loss and mortality' in Southern California forests as he flew over the depleted trees."
Southern California relies on the Colorado River -- which is drying up due to drought, dams, and water being diverted for farmlands. It now ends 50 miles inland instead of reaching the sea.
http://www.smithsonianmag.com/...
California doesn't receive enough rainfall to support the agriculture grown in the region (except maybe the north west portion). Almonds may not be the biggest crop, but they are among the ones which require the most water, and almond growers say that even though they're now giving their almond trees brackish water from wells, they plan to grow more almond trees b/c they're very profitable -- water shortage be damned.
Most farmland is in mid-eastern to eastern half of the US... which gets enough rainfall to support crops. California generally doesn't rely on rainfall - it needs water pumped from rivers, aqueducts, and aquifers. The areas of CA that get the most rainfall are the mountains which feed a few rivers. It's not sustainable. Water rights issues won't matter if there's no water to squabble over. CA needs to build more storage for fresh water -- often, when it rains, water washes quickly into concrete channels and is fed out to the sea instead of stored. Sad, really.
https://www.crwr.utexas.edu/gi...