High good, low bad: Mead in March 2012
The steady rise of Lake Mead, clearinghouse of Colorado River water for the Southwestern US and Mexico, was heartening while it lasted. From a November 2010 low only seven feet shy of triggering shortage declarations, a steady flow into the biggest reservoir in the US throughout 2011 pushed Mead’s elevation 58 feet above the austerity line.
However, in March 2012, the level began to fall again. Look at year-on-year figures from the federal Bureau of Reclamation and it is clear that since 2000 the overwhelming trend has been downward. The entire river system, including Mead, is only 63% of what Reclamation classifies as full.
If there is good news to be had in decline, and there is, part of it is that an innovative landscape architecture instructor at Cal Poly Pomona is tweaking the founding Reclamation mission to “make the desert bloom.” Charged with leading a sustainability studio this winter, …
Pacific coast irises: Look now, buy later
Last spring I wrote about how the March release by nurseries of Pacific coast irises tempted many — myself included — to plant the flowers in April. I put up this post-script because, having done it in 2011 after a wet winter leading into what proved a cool summer, I still saw mortality rates of 15%. Anyone trying it this April would be starting after a dry winter going into what looks like it’s going to be a hot summer. Here’s the problem: If you are watering newly planted irises as they become dormant in May and June, and given the only partially charged soil, you probably will be, it’s a perfect recipe for root rot and death. At $5 a plant, or more, there are much less dispiriting ways to waste money. So in these dewy days following our long-awaited rain, my advice is to inspect established Pacific coast …
Aroused by rain
The appearance of this mushroom after a much-needed rain in the Los Angeles foothills demanded that I Find The Camera. In the interim between putting the photo on Facebook this morning with a request for an ID and getting a response to an e-mailed query from Los Angeles County Natural History Museum mycologist Florence Nishida this evening, speculation as to its genus involved unbridled merriment. Southern California resident treasure, memoirist Erika Schickel, ventured that it was a Micropenisula shlongaeria. My own suspicion had been a Phallus anthonyweinerii. After more ribald speculation and some genuine mycological story-telling on the social network, Nishida’s response by e-mail in early evening had a “eureka” quality.
You are a lucky girl,” she wrote, “nature has gifted you with a stinkhorn, aka phalloid fungus. It’s probably Lysurus borealis, though another species is very common in southern California, Lysurus mokusin. Just looking at your …
Water quality beneath the asphalt
Those wondering why so much of the recent rain across Los Angeles was flushed out to the Pacific through a storm drain system instead of socked into the local aquifer will find part of a complicated answer in a fact sheet issued last week by the US Geological Survey. Run-off from the Transverse Ranges into the San Fernando and San Gabriel valleys hits land that the USGS classes as 83% urban, which means largely paved and impermeable. (For how a combination of arrogance and greed led to over-building of the Los Angeles flood plain, there is no better source than historian Jared Orsi’s “Hazardous Metropolis.”) Another limit on our ability to store mountain run-off in these valleys is groundwater pollution brought by that urbanization. The map below shows solvent hot spots.
Hat tip to the Water Education Foundation’s Aquafornia for signalling the sheet’s publication.…
Nevada State Engineer refills Vegas pipeline
Click on the scoreboard to be taken to a Las Vegas Review-Journal report of yesterday's pipeline decision.
It was never supposed to be a fight. When 22 years ago Las Vegas water manager Pat Mulroy first filed claims on all the theoretically unappropriated water in five rural valleys in eastern Nevada, opponents were supposed to roll over or be crushed. In Mulroy’s corner were all the money and influence that Vegas could bring to bear. A remark reportedly made early in 2007 by Mulroy during a Las Vegas Sun editorial board meeting summed up the odds. In it, when asked what she would do if the State Engineer denied her claims, Mulroy allegedly replied that she would have the Governor of Nevada replace him.
The story may or may not be true*, however, the point is that it could be. It sounds like Pat. No one familiar with what …
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