| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 4284 |
10 Jun 2017 @ 1051 |
--- |
Barbara Lasseter |
almost no water visible from the loop road |
| 2937 |
01 Jun 2016 @ 2026 |
--- |
JSJ |
Perpetual spouting, as usual. |
| 2524 |
13 Aug 2015 @ 0959 |
--- |
JSJ |
Island Geyser was engaged in its usual perpetual spouting. |
| 2523 |
12 Aug 2015 @ 1009 |
--- |
JSJ |
Island Geyser was engaged in its usual perpetual spouting - observed at 1009 & at 1439. |
| 2522 |
10 Aug 2015 @ 1937 |
--- |
JSJ |
Island Geyser was engaged in its usual perpetual spouting. |
| 2478 |
09 Aug 2015 @ 1720 |
--- |
JSJ |
Island Geyser was engaged in perpetual spouting, as usual. |
| 2476 |
08 Aug 2015 @ 0907 |
--- |
JSJ |
Island Geyser was engaged in perpetual spouting, as usual. |
| 2025 |
06 Aug 2015 @ 0806 |
--- |
JimS |
Island was not erupting at 0806. |
| 2028 |
06 Aug 2015 @ 0712 |
--- |
JSJ |
Island Geyser was engaged in its typical perpetual spouting at 0712. |
| 2612 |
14 May 2015 @ 1852 |
--- |
JSJ |
Island Geyser was engaged in its usual perpetual spouting. |
| 1191 |
09 Jul 2014 @ 1200 |
09 Jul 2014 @ 1800 |
JSJ |
Island Geyser was engaged in its usual perpetual spouting - observed in early afternoon on 9 July 2014. |
| 1220 |
03 Jun 2013 @ 0800 |
03 Jun 2013 @ 1200 |
JSJ |
Island Geyser was engaged in its usual perpetual spouting behavior - observed in the late morning of 3 June 2013. |
| 1219 |
02 Jun 2013 @ 1200 |
02 Jun 2013 @ 1800 |
JSJ |
Island Geyser was engaged in its usual perpetual spouting behavior - observed in the late afternoon on 2 June 2013. |
| 208 |
08 Jun 2011 @ 0920 |
08 Jun 2011 @ 1145 |
LynnS |
not erupting when checked at 0920 0945 1145 |
| 15216 |
17 May 1996 @ 2100 |
--- |
JarnoO |
not ie |
| 15215 |
17 May 1996 @ 0900 |
--- |
JarnoO |
dormant; Firehole River very high water |