Last Known Eruption
47y 322d 7h 37m ago

Interval Statistics

Interval Count19
Min2h 37m
Max14y 347d 5h 30m
Mean1y 39d 14h 11m
Median10d 21h 36m

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.