| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 35222 |
14 Jun 2024 @ 1353 |
14 Jun 2024 @ 1425 |
JSJ |
B Vent. Blipping at 1353. Smaller, briefer eruptions at 1422, 1423, 1424, 1425. |
| 35193 |
13 Jun 2024 @ 0942 |
13 Jun 2024 @ 1300 |
JSJ |
Between the nice, big Three Vent eruptions were smaller, briefer eruptions from B Vent. Didn't catch them all due to obscuring Clepsydra steam. Examples: 1012, 1022, 1034, 1035, 1047, 1300. |
| 27562 |
13 Aug 2023 @ 1612 |
--- |
minissa |
Just a note that with minimal water in it so the cyanobacteria is visible, it's the most vivid vermillion I've seen |
| 27545 |
12 Aug 2023 @ 1345 |
--- |
JSJ |
No water visible in basin. |
| 26892 |
07 Jul 2023 @ 1901 |
--- |
minissa |
Pool fairly full, partly with water from Kaleidoscope/Drain area but with binoculars I can see brownish-orange cyanobacteria covering the basin of the pool and down into the throat |
| 15530 |
11 Aug 2020 @ 1529 |
--- |
JSJ |
Noticed blipping at B Vent. |
| 15160 |
02 Aug 2020 @ 1700 |
--- |
JSJ |
Water level down. B & C Vents - in one pool. A Vent - in a separate pool (couldn't quite see the water from Fountain overlook platform). B-C pool calm most of the afternoon. Noticed blipping and low splashy roiling from both B & C vents at 1700-onward. |
| 13397 |
13 Aug 2019 @ 1333 |
13 Aug 2019 @ 1506 |
JSJ |
Basin water-filled today (unlike yesterday). A Vent is somewhat restless - large blipping and small splashing. |
| 13207 |
12 Aug 2019 @ 1048 |
--- |
JSJ |
Was confused about what I was seeing at first, but Three Vent Geyser's basin was empty (or at least, the water was out-of-sight from the Fountain overlook platform). Stayed this way all morning and afternoon. Have never, ever seen this before. |
| 13182 |
11 Aug 2019 @ 1312 |
11 Aug 2019 @ 1710 |
JSJ |
1312 - full basin, deep blue color, steaming, appears calm. 1710 - B Vent blipping. |
| 12937 |
01 Aug 2019 @ 1050 |
--- |
JSJ |
B Vent somewhat restless. |
| 11776 |
13 Jun 2019 @ 1512 |
--- |
JSJ |
Noticed B Vent was restless at 1512. Ditto at 1533. |
| 10665 |
09 Aug 2018 @ 1128 |
09 Aug 2018 @ 1404 |
JSJ |
B Vent restless / low splashing. |
| 9468 |
04 Aug 2018 @ 1641 |
--- |
JSJ |
No full eruptions seen in the late afternoon & early evening. Noticed blipping from B Vent at 1641-onward. |
| 8738 |
16 Jun 2018 @ 1406 |
16 Jun 2018 @ 1713 |
JSJ |
Calm, water-filled basin at 1406. Noticed B Vent was slightly restless at 1713-onward. |
| 5418 |
10 Aug 2017 @ 1416 |
--- |
JSJ |
Noticed B Vent was restless at 1416 and 1620. |
| 4832 |
06 Aug 2017 @ 1257 |
06 Aug 2017 @ 1743 |
JSJ |
Three Vent Geyser occasionally restless this afternoon and evening, with some full eruptions occurring. All activity seemed to be originating from the B Vent (= southwestern corner of feature). |
| 4809 |
05 Aug 2017 @ 1911 |
--- |
JSJ |
Decent doming from "B Vent" at 1911. |
| 4678 |
01 Aug 2017 @ 2017 |
--- |
JSJ |
Noticed "B Vent" was restless; doming at 2018. |
| 4578 |
28 Jul 2017 @ 1412 |
28 Jul 2017 @ 1850 |
JSJ |
Roiling from "B Vent" of Three Vent Geyser at 1412 and 1504. Roiling and low doming from "B Vent" at 1849-1850. |
| 4301 |
11 Jun 2017 @ 1708 |
--- |
JSJ |
Roiling from C vent (= right front). |
| 4300 |
11 Jun 2017 @ 1238 |
--- |
JSJ |
Decent roiling from C vent (= right front). |
| 4196 |
03 Jun 2017 @ 1433 |
03 Jun 2017 @ 1521 |
JSJ |
Calm & quiet in the late morning and early afternoon, with water-filled basin. Restless during the mid-afternoon. Low to medium-sized spouting from the B Vent starting at 1433. Quiet at 1435. Intermittent low spouting from 1435 to 1504. Medium-sized spouting at 1506. Low spouting/roiling at 1511. Medium-sized spouting at 1514 & 1516-1518 & 1520-1521. Ceased observations after this. |
| 3416 |
02 Aug 2016 @ 1201 |
02 Aug 2016 @ 1520 |
JSJ |
C Vent was restless for much of the afternoon. Roiling/doming at 1201. No visible water in basin at 1300. Moderately low to ~medium-sized bursting at 1317 - this continued (intermittently) to 1520. |
| 3350 |
07 Jul 2016 @ 1409 |
--- |
JSJ |
Medium-sized bursting from "4B Vent" of Keller (2005) - GOSA Transactions 9: 121-133. |
| 2986 |
05 Jun 2016 @ 1423 |
05 Jun 2016 @ 1905 |
JSJ |
Churning from "4B Vent" of Keller (2005 - GOSA Transactions 9: 121-133.) at 1423 and 1454. Low to medium-sized bursts at 1456. Relatively calm at early 1458. Churning to low bursting at late 1458. Calm at 1503. Three Vent Geyser eruption at 1527 to 1528 with decent-sized bursting. Small to medium-sized, intermittent spouting from the "4C Vent" of Keller (2005) at 1543 to 1628. Intermittent small spouting from 4C Vent at 1633. Basin's water level is higher at 1637. 4C Vent is just slightly roiling (intermittently) at 1637. 4C Vent with low to very low bursting at 1647 and 1649. Three Vent Geyser eruption at 1659 to 1700, with decent-sized bursting. Another eruption at 1702 to 1703, also with decent-sized bursting. Stopped making observations after this, but no more eruptions up to 1905, when I left. |
| 2700 |
13 Aug 2015 @ 1634 |
13 Aug 2015 @ 1646 |
JSJ |
Low to very low spouting from a little before 1634 to 1636. Somewhat intermittent, moderately low bursting at 1638 to 1646. Eruptive activity is originating from the "4B Vent" of Keller (2005) - GOSA Transactions 9: 121-133. The 4B Vent is at the southwestern corner of Three Vent Geyser's basin. |
| 2699 |
13 Aug 2015 @ 1141 |
--- |
JSJ |
Very low bursting at 1141. Eruptive activity is originating from the "4B Vent" of Keller (2005) - GOSA Transactions 9: 121-133. The 4B Vent is at the southwestern corner of Three Vent Geyser's basin. |
| 2698 |
13 Aug 2015 @ 1114 |
--- |
JSJ |
Moderately low bursting at 1114. Eruptive activity is originating from the "4B Vent" of Keller (2005) - GOSA Transactions 9: 121-133. The 4B Vent is at the southwestern corner of Three Vent Geyser's basin. |
| 2701 |
17 Aug 2014 @ 1429 |
17 Aug 2014 @ 1438 |
JSJ |
Splashing at 1429 to 1430 from the 4B Vent of Keller (2005) - GOSA Transactions 9: 121-133. Pool appeared mostly drained by 1438. |