[env-trinity] Fwd: Join the Ecology Center on Feb. 21: Volcanoes & Hydrology

[Tom Stokely]

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From: Richard Lucas <richard at shastavisions.com>
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Sent: Monday, February 17, 2014 9:41 PM
Subject: Fwd: Join the Ecology Center on Feb. 21:  Volcanoes & Hydrology
 



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>Peggy Risch photo taken from Little Mount Hoffman on the rim of the Medicine Lake Highlands - showing Little Glass Mountain and Pumice Stone Mountain, with Mount Shasta on the horizon.     
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>Dear Friends,
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>M. Lee Davisson, Noted Scientist, to Present on Local Volcanic Hydrology at Sisson Museum February 21  
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>The spring systems of three Southern Cascade Volcanoes—Mount Shasta, Medicine Lake Volcano, and Mount Lassen—will be the topic of a presentation by M. Lee Davisson, a research geochemist with the firm M.L. Davisson and Associates in Livermore, California. The event will take place at Sisson Museum in Mount Shasta on Friday, February 21, from 3 to 5:30 PM.
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>Davisson will discuss pathways of recharge and flow on the volcanoes that contribute to our local and state water supply. He will speak generally about the Mount Shasta and Mount Lassen stratovolcanoes, and more specifically about his recent peer-reviewed isotopic study of Medicine Lake shield volcano and the Fall River Springs. The study, which he co-authored with Dr. Tim Rose of Lawrence Livermore National Laboratories, will be published in the Journal of Environmental Forensics this coming March.
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>The presentation will reveal the scientific techniques that contribute to conclusions about the interconnection of Medicine Lake Volcano as the primary recharge area for the significant outflow at the Fall River Springs, the largest spring system in California. The groundwater storage capacity of the three aquifers will be treated, as well as risks to future water supplies. The discussion will also touch on identifying the western boundary between Medicine Lake Volcano and the eastern boundary of Mount Shasta, which are not well defined, and assessing whether a connection also exists between the Medicine Lake Volcano aquifer and the McCloud River.
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>“In this year of severe drought, understanding these pristine, abundant, reliable volcanic headwaters is more vital than ever,” said Michelle Berditschevsky, Senior Conservation Consultant for the Mount Shasta Bioregional Ecology Center. The Ecology Center and Medicine Lake Citizens for Quality Environment are co-sponsoring the presentation.
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>This event is free and open to the public, and will be of special interest to natural resource professionals, hydrologists, government agencies, environmental nonprofits, landowners, fishermen, and anyone who wants to know more about the intricacies of volcanic hydrology and the high-volume spring flows that issue from our local volcanoes.
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>For more information, please contact the Mount Shasta Bioregional Ecology Center at 926-5655 or email michelle at mountshastaecology.org.
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