| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 36429 |
17 Aug 2024 @ 0640 |
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RMichaels |
Water level at least 10" below the top of the orange bacteria ring. Yesterday's Grotto Marathon probably continued well into the night/early morning. Bijou was also off when I rode past the Giant platform. |
| 35243 |
16 Jun 2024 @ 1155 |
--- |
Tara |
Down ~1.5' below top of orange bacteria, steady bubbling |
| 34444 |
05 May 2024 @ 1358 |
--- |
SantaFe108 |
Dropping and bubbling, Marathon in progress. |
| 33472 |
27 Dec 2023 @ 0959 |
--- |
aferrara |
water down 8-12", boiling gently over vent |
| 26690 |
27 Jun 2023 @ 0554 |
--- |
JimS |
Very low |
| 26151 |
08 Jun 2023 @ 0819 |
--- |
aferrara |
Water level down about 6" from top of bacterial mat rim. Boiling over vent |
| 26127 |
07 Jun 2023 @ 1547 |
--- |
SantaFe108 |
Dropping while bubbling. |
| 25377 |
10 May 2023 @ 0855 |
--- |
aferrara |
Boiling intermittently, water about 18" below rim |
| 25298 |
30 Apr 2023 @ 1645 |
--- |
SantaFe108 |
Water level is lowering and bubbling. |
| 20318 |
06 Nov 2021 @ 0855 |
--- |
aferrara |
Water level low, steady stream of bubbles in center. |
| 19599 |
16 Sep 2021 @ 0811 |
--- |
CrisG |
Pool low. water at yop of bacterial ring. Grotto still IE. |
| 18445 |
16 Jul 2021 @ 0803 |
--- |
JimS |
Pool low. Grotto marathon overnight. |
| 18315 |
09 Jul 2021 @ 0558 |
--- |
JimS |
Pool low but recovering from the Grotto marathon. |
| 18213 |
01 Jul 2021 @ 0601 |
--- |
JimS |
Pool low. Was a Grotto marathon overnight. |
| 18099 |
26 Jun 2021 @ 0546 |
--- |
JimS |
Pool low, was a grotto marathon overnight. |
| 18028 |
22 Jun 2021 @ 1952 |
--- |
CrisG |
pool has dropped since last observation. water now 2" above orange bacteria. |
| 18027 |
22 Jun 2021 @ 1525 |
--- |
CrisG |
pool high, up to bottom of sinter rim |
| 17898 |
19 Jun 2021 @ 0553 |
--- |
JimS |
Pool very low. |
| 15647 |
19 Aug 2020 @ 0710 |
--- |
RMichaels |
6 inches below the top of the orange bacteria inside the pool and lightly bubbling. |
| 12398 |
07 Jul 2019 @ 1043 |
--- |
ldgordon |
Pool seems to be about a foot below the top of the bacteria line |
| 11563 |
04 Jun 2019 @ 0845 |
--- |
User34 |
Down about 1/3 of the way to the vent, bubbling. |
| 10790 |
25 Dec 2018 @ 1550 |
--- |
Janet Jones |
Looks like it recently dropped 6” or so |
| 10124 |
09 Sep 2018 @ 1219 |
--- |
EmilyW |
Down a bit and grotto has been off for a long time. Likely has had a marathon |
| 9289 |
25 Jul 2018 @ 0617 |
--- |
JimS |
Down about 4 inches. |
| 8829 |
21 Jun 2018 @ 0620 |
--- |
JimS |
Down about 6 inches. |
| 8053 |
02 May 2018 @ 0920 |
--- |
WillBoekel |
2-3 inches from overflow |
| 8049 |
01 May 2018 @ 0853 |
--- |
Micah Kipple |
Almost at ovf |
| 8026 |
28 Apr 2018 @ 0637 |
--- |
Micah Kipple |
It was slightly [read: barely] down about an inch with steady ebullition. Perhaps suggesting the Grotto last night was a weak marathon. But put a big (?) on that interpretation. |
| 7534 |
29 Sep 2017 @ 0750 |
--- |
Kitt B |
pool down about 6 inches |
| 3191 |
22 Jun 2016 @ 1425 |
--- |
David |
water level down about a foot. orange bacteria ring dried and cracking indicating low water level for some time. see photo: https://www.flickr.com/photos/ujelang/27447783513/in/dateposted-public/ |
| 3192 |
30 Sep 2013 @ 1023 |
--- |
David |
Water in pool brim full, nearly overflowing. see photo: https://www.flickr.com/photos/ujelang/28028231296/in/dateposted-public/ [exif time on pacific time, not mtn). |
| 16705 |
22 Aug 1998 @ 2055 |
--- |
JarnoO |
a few inches below cyanobacteria's lower edge |
| 16703 |
21 Aug 1998 @ 0855 |
--- |
JarnoO |
down to lower ledge of cyanobacteria |
| 14323 |
08 Jun 1995 @ 1830 |
--- |
JarnoO |
down >1' |
| 12719 |
18 Aug 1994 @ 0225 |
--- |
JarnoO |
down 1'+ |
| 12666 |
14 Jun 1994 @ 0938 |
--- |
JarnoO |
down. |
| 12305 |
22 Aug 1993 @ 1000 |
--- |
JarnoO |
low @ 1000 |
| 12299 |
20 Aug 1993 @ 0600 |
--- |
JarnoO |
low at 0600 |
| 12296 |
18 Aug 1993 @ 0930 |
--- |
JarnoO |
low at 0930 |
| 12294 |
14 Aug 1993 @ 0805 |
--- |
JarnoO |
low 0805 |
| 12142 |
08 Feb 1993 @ 0000 |
08 Feb 1993 @ 2359 |
JarnoO |
bubbling |
| 12138 |
07 Feb 1993 @ 0957 |
--- |
JarnoO |
down. |
| 5443 |
10 Jul 1992 @ 1330 |
--- |
JarnoO |
very low |
| 5168 |
09 Apr 1992 @ 0000 |
09 Apr 1992 @ 2359 |
JarnoO |
down. |
| 5046 |
03 Mar 1992 @ 0800 |
--- |
JarnoO |
0800 low |