Hello List, Over the past several weeks I've had the opportunity to "visit" 14 dry lakes in CA and NV. I'm here to report that I have some good news. All of the 14 dry lakes that I recon'd were in "typically good" shape with only a couple having experienced marginal flooding and minor resurfacing. None of the lakes experienced total inundation. And only two lakes were still wet with standing water (mostly pond-sized, and close to the shore that is leeward of the summertime predominant wind direction).
So, for those people who were changing their travel plans, because of recent news reports about flash-flooding, I hope this message lessens your concerns. That's not to say that the news reports were exaggerated. Clearly, the inundation of Zzyzx was at least a "25-year flood", caused by a cloudburst that was localized over a single "dry" wash. My original message was a request for information in order to tell whether any of these storms were producing 50-year, or up to 500-year, flood effects in these basins. Here are some images I took of large rocks on a dry lake, the only evidence remaining of the catastrophic effects of a 50- to 500-year flood surge: http://www.geocities.com/bolidechaser/drylakes/ca030905.jpg I've coined the term "rock-garden" to describe this unique type of (boulder-sized) lag gravel. The "finer clasts" (pebbles, sand, silt, and mud) have long since been dispersed across the lake by succeeding high-water wave action: http://www.geocities.com/bolidechaser/drylakes/ca030905b.jpg Again, thanks to those who shared with me their pre- & post-flood observations. Bob V. ---------------------------------------- [meteorite-list] Re: Recent Flash Floods Paul [EMAIL PROTECTED] Fri, 22 Aug 2003 09:25:55 -0700 (PDT) On Thu, 21 Aug 2003 12:30:11 -0700 (PDT) Robert Verish >This most recent influx of moisture >into the deserts has caused severe >flash-flooding. Up until now, the >"dry" lakes have been overly wet with >standing water, but flash-flooding >has the energy to bring large volumes >of mud and rock with that water, out >into the middle of these playas and >bury any promising surface with a new >layer of sediment. First, the flooding is not going to carry any rock of any size into the playa. ====== message truncated ====== __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list