Last Known Eruption
46y 214d 2h 12m ago

Interval Statistics

Interval Count18
Min2h 37m
Max2y 345d 18h 52m
Mean123d 21h 20m
Median5d 14h 28m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
13169 11 Aug 2019 @ 1210 --- bbev Steamy and gurgling from main and north vents.
7678 02 Oct 1974 @ 1800 --- research-mab 10/2/74 Koehn observed & heard Union Geyser erupt from Bear Landing “Observed and heard eruption… sounded like a jet taking off.” {From Shoshone Cove Log Book - transcribed by Rick H- no time known}
No attachments for this geyser.
Baseline does not exist.