Last Known Eruption
3y 305d 3h 8m ago

Latest Eruptions

Interval Statistics

Interval Count26
Min2m
Max15y 117d 21h 11m
Mean1y 153d 22h 49m
Median2h 26m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
18525 19 Jul 2021 @ 1224 --- minissa Not sure if this is a feature we logged, but visible boiling up 3-4"
18420 14 Jul 2021 @ 1118 --- steve Another strong boil to about 2 feet for about one minute.
18418 14 Jul 2021 @ 1033 --- steve As I drove up Basin Spring was boiling from 6 inches to 2 feet. This continued until 1036. Some weaker boiling happened 1038-9.
17333 01 Jun 2021 @ 1336 --- steve Boiling to a foot high or more
13476 31 Aug 2019 @ 1231 31 Aug 2019 @ 1318 steve Basin Spring appears to be boiling with occasional bigger boils to 6 inches to over a foot about once a minute. No eruptions seen however. Yet.
13030 04 Aug 2019 @ 1335 --- JSJ In low to very low eruption (viewed from Three Sisters Spring overlook). Appeared to be engaged in the same cyclic behavior as on 2 August 2019.
12966 02 Aug 2019 @ 1744 02 Aug 2019 @ 1847 JSJ Pool cycling from relatively calm to bubbling, blipping, low spouting at multiple spots, and low erupting.
4178 02 Jun 2017 @ 1240 02 Jun 2017 @ 1401 JSJ No eruptions from Basin Spring. Receiving a trickle of runoff from Three Sisters Spring. Basin Spring's water level cycles up & down (Examples: high water, almost at rim, at 1248 & 1301 & 1312-1315; high water event, but not very close to rim, at 1327). Some high water level events are accompanied by slight to semi-decent overflow from the southwestern arm/corner of pool. A sustained high water event occurred from 1335 to 1357, accompanied by overflow. Slight bubbling at 1353 & 1356 & 1358 from next to the western edge of the pool. Low water levels appeared to be ~0.5 to 0.75 feet below the rim/border of the pool.
14372 31 Aug 1995 @ 0000 31 Aug 1995 @ 2359 JarnoO active
No attachments for this geyser.
Baseline does not exist.