US Geological Survey visual mark

Title: Long Valley Observatory

Well HSL-1: Long Valley Caldera, California

Provisional Data: Subject to Revision!

Water levels since 1996 for USGS observation well HSL-1 in Long Valley caldera, California

Hydrographs for well HSL-1, based on hand measurements and unfiltered daily mean values.

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U.S. Department of the Interior, U.S. Geological Survey, Menlo Park, California, USA
URL http://lvo.wr.usgs.gov/hsl.html
Contact: Long Valley Web Team
Last modification: 23 December 2003 (MS)