The United States' Lesser Geyser Fields
 J. Alan Glennon

Lassen Volcanic National Park, California
 14 July 2004. Click image for a larger version.

View of Bumpass Hell --- photo by A. Glennon 2004 View of Bumpass Hell --- photo by A. Glennon 2004 View of Terminal Geyser --- photo by A. Glennon 2004 Lower Vent of Terminal Geyser --- photo by A. Glennon 2004 Upper Vent of Terminal Geyser. Image has been adjusted to contrast water and rock. --- photo by A. Glennon 2004 Boiling Lake in Lassen Volcanic National Park --- photo by A. Glennon 2004

Mickey Hot Springs and Vicinity, Oregon
 16 July 2004. Click image for a larger version.

Small geyser at Mickey Hot Springs, Oregon (w/Hobo datalogger). --- photo by A. Glennon 2004 Small geyser at Mickey Hot Springs, Oregon --- photo by A. Glennon 2004 Small geyser at Mickey Hot Springs, Oregon --- photo by A. Glennon 2004 Hot Spring at Mickey Hot Springs, Oregon --- photo by A. Glennon 2004 Hot Spring at Mickey Hot Springs, Oregon --- photo by A. Glennon 2004 Alan at Borax Lake gate, Oregon (BLM/Nature Conservancy property) --- photo by A. Glennon 2004 Hot Spring at Borax Lake, Oregon (BLM/Nature Conservancy property) --- photo by A. Glennon 2004 Hot Spring at Borax Lake, Oregon (BLM/Nature Conservancy property) --- photo by A. Glennon 2004 Old Perpetual 'Geyser' at Lakeview, Oregon. The feature is an intermittently-erupting geothermal well. --- photo by A. Glennon 2004

Black Rock Desert, Nevada
 17 July 2004. Note: All of the springs pictured are on private land. You must make arrangements with the respective landowners for access. Click image for a larger version.

Thumbnail of Fly Ranch Geyser, Nevada. The feature is a perpetually erupting manmade well (thumbnail only). --- photo by A. Glennon 2004 Great Boiling Springs, Nevada. --- photo by A. Glennon 2004 Great Boiling Springs, Nevada. --- photo by A. Glennon 2004 Mudpot, Great Boiling Springs, Nevada. --- photo by A. Glennon 2004 Mudpot, Great Boiling Springs, Nevada. --- photo by A. Glennon 2004 Mud Springs, Nevada. --- photo by A. Glennon 2004

Hot Creek and Little Hot Creek, California
 18 July 2004. Click image for a larger version.

View of Hot Creek, California. --- photo by A. Glennon 2004 Hot spring at Hot Creek, California. --- photo by A. Glennon 2004 Alan at Little Hot Creek, California. --- photo by A. Glennon 2004 Spring 11 (see Transactions of the Geyser Observation and Study Association, Vol. 2) at Little Hot Creek, California, --photo by A. Glennon, July 2003

Several other U.S. fields exist, but are not pictured: Morgan Springs (CA), Umnak Island (AK), and Kanaga Island (AK). Geyser-like behavior has been observed in a handful of other locations within the United States. Erupting geothermal wells include Old Faithful of Calistoga, California, and Old Perpetual Geyser, Lakeview, Oregon. At least two natural carbon-dioxide-driven, cold-water, intermittent spouters are known: one near Salton Sea, California, and another in Yellowstone National Park, Wyoming. These and other cold-water geysers are described in the article The operation and geography of carbon-dioxide-driven, cold-water geysers by J.A. Glennon and R.M. Pfaff (2005). A companion website to that article can be found here.

To reference this material, use the appropriate variation of the following format:
J. Alan Glennon. (2004) United States' Lesser Geyser Fields, http://www.alanglennon.com/geysers/lesser/, University of California, Santa Barbara, originally posted July 21, 2004, updated December 15, 2004.

all photos by:
Alan Glennon
www.alanglennon.com
e-mail: glennon@umail.ucsb.edu