| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 38993 |
11 May 2025 @ 1908 |
--- |
cb |
overflowing in all directions. good 3 point boil |
| 38964 |
10 May 2025 @ 1800 |
--- |
MAB |
overflow all directions - 4 point boil on center- funky lighting but good waves |
| 38813 |
03 May 2025 @ 2127 |
--- |
K.Cooper |
in overflow out the back channel |
| 38774 |
03 May 2025 @ 0900 |
--- |
MAB |
overflow wet all directions - one spot on west not spilling over - another on west side only filling the first level terrace below |
| 38675 |
27 Apr 2025 @ 1854 |
--- |
MAB |
overflow all directions incl to muddy pool and trees to south - just barely over west side and filling some terraces |
| 38613 |
25 Apr 2025 @ 0955 |
--- |
MAB |
Clear and beautiful w light center boil - overflowing well out back channel but not down logger lane to muddy pool - not overflowing to west terraces yet |
| 38590 |
23 Apr 2025 @ 1123 |
--- |
DanS |
Water coming up, now above inner tube. |
| 38541 |
19 Apr 2025 @ 1753 |
--- |
MAB |
5 days 6h post SB - Crystal clear turquoise in color - water level is out of the deep central bowl onto the next bench but still feet from being full - zero noticeable bubbles or fill action |
| 38404 |
10 Apr 2025 @ 1150 |
--- |
SantaFe108 |
Clear, blue, and overflowing out most of the back rim, with center boil. |
| 38270 |
23 Feb 2025 @ 1425 |
--- |
K.Cooper |
Clear and blue. overflowing out of established left channel. light consistent bubbling in center. |
| 38002 |
15 Dec 2024 @ 1507 |
--- |
SantaFe108 |
Overflowing over most of the back-left quadrant of the rim, clear and blue with no boiling. |
| 37898 |
31 Oct 2024 @ 1652 |
--- |
SantaFe108 |
Light center boil and blue, overflowing only out of the established back-left channel. |
| 37824 |
29 Oct 2024 @ 1313 |
--- |
MAB |
still only flowing out back channel none elsewhere |
| 37787 |
27 Oct 2024 @ 0853 |
--- |
MAB |
Not totally full but overflowing back left channel - dry on right and muddy pool - fairly clear blue in color w light waves - couldn't really see the bubbling details |
| 37746 |
24 Oct 2024 @ 1542 |
--- |
DanS |
Full with boils and runoff out rear channel. |
| 37721 |
24 Oct 2024 @ 1538 |
--- |
SantaFe108 |
Overflowing only out of established channel back-left. Blue and clear with wide center boil. |
| 37679 |
22 Oct 2024 @ 1631 |
--- |
MAB |
higher level out of central tube but still several feet low - rolling boil & seems clearer than Sat 19th |
| 37655 |
19 Oct 2024 @ 1500 |
--- |
MAB |
still low well down the inner vent with a strong splashy boil |
| 37580 |
14 Oct 2024 @ 1100 |
--- |
cb |
**Cistern Spring really has not changed water level since last night's observation. still ~5' below the inner rim and still has the occational softball sized bubble breaking the surface.
** @1830 Cistern's water level is unchanged. same level, same few bubbles 🫧 |
| 37472 |
10 Oct 2024 @ 1004 |
--- |
SantaFe108 |
30" below overflow, very weak center boil. |
| 37441 |
08 Oct 2024 @ 0808 |
--- |
bbev |
Cistern is down 13-15", little steam on a cold morning, clear with an occasional bubble over the vent. |
| 37436 |
07 Oct 2024 @ 1707 |
--- |
bbev |
Down 8-10" ~9hrs after SB. |
| 37432 |
07 Oct 2024 @ 1326 |
--- |
bbev |
5 hrs Post Steamboat eruption: CS has dropped 6" below rim of pool. |
| 37383 |
03 Oct 2024 @ 1540 |
--- |
SantaFe108 |
Full of milky blue water. Boiling in center, only overflowing through the established channel on the back-left. |
| 37215 |
28 Sep 2024 @ 1618 |
--- |
cb |
still very steamy on this 78° fall day. pool is clear with a vigorous blooping boil. overflowing out the established channel |
| 37176 |
26 Sep 2024 @ 1741 |
--- |
cb |
very Steamy on the warm fall afternoon. pool is ~1.5" below overflow with much of the scalloped edges exposed. Overflowing out the established channel only. Fairly strong roiling, blooping boil. pool water is clear and blue. |
| 36810 |
06 Sep 2024 @ 1455 |
--- |
cb |
pool low, clear, only overflowing out the established channel with a 4-6" vigorous blooping boil |
| 36580 |
27 Aug 2024 @ 1836 |
--- |
cb |
low pool. ~1 inch of exposed scalloped edges. only overflowing out the established channel. blooping boil and pool is clear |
| 36446 |
18 Aug 2024 @ 1222 |
--- |
Craigmon99 |
Overflowing and boiling nicely |
| 36168 |
29 Jul 2024 @ 1630 |
--- |
cb |
pool is ~1" below the scalloped edges and only overflowing out the established channel. Medium 2 point boil. pool clear. |
| 36111 |
26 Jul 2024 @ 0938 |
--- |
cb |
In overflow but only out the established channel toward Echinus. prolly reached overflow yesterday. pool is low, blue in color, cloudy with a weak boil. pool level is ~1" below the rim with scalloped edges exposed. |
| 36070 |
24 Jul 2024 @ 0909 |
--- |
cb |
water level is at the top of the inner tube rim. Vigorous blooping boil and water is clear and steamy |
| 36051 |
23 Jul 2024 @ 0959 |
--- |
cb |
water is at the bottom of the crater. I can hear it churning, but water is not visible yet. Very steamy |
| 36007 |
20 Jul 2024 @ 1955 |
--- |
cb |
bone dry. no steam, no audible sounds, no water. |
| 35983 |
19 Jul 2024 @ 0851 |
--- |
cb |
Cistern is completely empty>no sounds, no water, no steam! prolly drained overnight. |
| 35939 |
17 Jul 2024 @ 1201 |
--- |
bbev |
45hrs PSBE: CS down 18-20", still well above rim of inner tube. Clear with occasional bubble. |
| 35845 |
11 Jul 2024 @ 1704 |
--- |
cb |
Pool a little lower than last report. Overflowing out the established channel only. 2 point blooping boil |
| 35788 |
08 Jul 2024 @ 1917 |
--- |
cb |
clear, blue, low pool ~1" below the scalloped edges of the pool, and only overflowing out the established channel. Pool has moderate roiling, blooping 3 point boil. bloops 2-3" in height. perimeter of the pool is caked white and bone dry. |
| 35682 |
02 Jul 2024 @ 1644 |
--- |
cb |
fairly vigorous blooping boil. Only overflowing out the established back channel. clear and blue |
| 35083 |
10 Jun 2024 @ 1237 |
--- |
SantaFe108 |
Full with center boil, light overflow out of the back-left side. |
| 34995 |
08 Jun 2024 @ 1056 |
--- |
cb |
pool high (just below the scalloped edges) but only overflowing out the established channel. meh 3 point boil. clear and blue |
| 34910 |
05 Jun 2024 @ 0825 |
--- |
bbev |
Water level ~2' from overflow, opalescent, with light one point boil. SB quiet. |
| 34859 |
03 Jun 2024 @ 1034 |
--- |
bbev |
Steaming, and water just visible while standing on the middle rail. No sound of active boiling. |
| 34836 |
02 Jun 2024 @ 0925 |
--- |
bbev |
No sign of water, either liquid or vapor. |
| 34811 |
01 Jun 2024 @ 1309 |
--- |
bbev |
Drained completely. No steam, no sound coming from crater! |
| 34804 |
01 Jun 2024 @ 1040 |
--- |
ge |
Empty except for extreme bottom. |
| 34793 |
31 May 2024 @ 1230 |
--- |
ypcaribou |
Cistern water level is inside pool but above inner tube. |
| 34776 |
30 May 2024 @ 1652 |
--- |
bbev |
15hrs PSBE: 1' below overflow, pool is clear and flat with occasional bubble over its vent. |
| 34686 |
26 May 2024 @ 0713 |
--- |
ypcaribou |
Tiniest trickle out the back scalloping revealed at edge of pool abt 1". No overflow anywherre else.Gentle boil in middle. |
| 34575 |
16 May 2024 @ 1720 |
--- |
cb |
no change |
| 34543 |
13 May 2024 @ 1752 |
--- |
cb |
pool at same level and only overflowing out the established channel. mildly reduced activity over the vent since last observation, but still a 2 pt blooping boil. |
| 34373 |
28 Apr 2024 @ 1012 |
--- |
DanS |
Pool level a bit lower than earlier this week. Outflow only in established back channel. |
| 34332 |
24 Apr 2024 @ 1002 |
--- |
DanS |
Full and overflowing out back and a little into trees. |
| 34267 |
19 Apr 2024 @ 1622 |
--- |
MAB |
Clear blue and beautiful with flow every which way - possibly less flow to the west hard to tell if it was also wet from snowmelt - busy center boil |
| 34079 |
01 Mar 2024 @ 0900 |
--- |
JR |
Empty, no sound of water below. |
| 33937 |
26 Jan 2024 @ 1405 |
--- |
JR |
Strong flow, clear blue. |
| 33905 |
24 Jan 2024 @ 1320 |
--- |
JR |
Stronger flow than usual, clear blue. |
| 33820 |
16 Jan 2024 @ 1213 |
--- |
JR |
Full, clear, slight overflow. |
| 33729 |
02 Jan 2024 @ 1200 |
--- |
JR |
About 3' below the rim, medium bubbling in center. |
| 33374 |
23 Dec 2023 @ 1046 |
--- |
JR |
Clear, blue, but a few inches below the rim. A bit of a stronger bubble in the middle. |
| 29066 |
22 Oct 2023 @ 0840 |
--- |
SantaFe108 |
Barely in overflow down the back established channel. Clear and blue with center boiling obscured by steam. |
| 28965 |
21 Oct 2023 @ 1510 |
--- |
JR |
Very full, strong water flow from vent. Clear blue. |
| 28933 |
20 Oct 2023 @ 1626 |
--- |
MAB |
Ovfl towards Echinus - even that channel looked blue - no overflow to west - clear blue rolling wide center boil |
| 28872 |
19 Oct 2023 @ 1116 |
--- |
DanS |
Full and overflowing out established back channel. |
| 28857 |
17 Oct 2023 @ 1720 |
--- |
MAB |
clear blue still ~2ft below the overhangs |
| 28779 |
14 Oct 2023 @ 1207 |
--- |
MAB |
Low! Audible violent boil - steamy |
| 28775 |
14 Oct 2023 @ 1000 |
--- |
Dan A |
Cistern is refilling, water barely visible from boardwalk ( had to stand on tiptoes to see it). |
| 28740 |
12 Oct 2023 @ 1030 |
--- |
Dan A |
Cistern is empty |
| 28717 |
09 Oct 2023 @ 1330 |
--- |
cb |
Down ~14" clear, blue with a weak boil |
| 28629 |
05 Oct 2023 @ 1133 |
--- |
cb |
CS pool is low, overflowing only out the established channel. blue with a blooping boil. |
| 28578 |
30 Sep 2023 @ 0924 |
--- |
ypcaribou |
dropped below overflow except main outlet which is a trickle |
| 28040 |
05 Sep 2023 @ 1740 |
--- |
cb |
pool is just at the scalloped edges. not quite at overflow but VERY close. water is flowing out the established channel only. |
| 28006 |
04 Sep 2023 @ 1611 |
--- |
cb |
Still filling, about 2.5' below overflow level. Blooping boil in the center of the pool. clear & blue |
| 27828 |
28 Aug 2023 @ 1025 |
28 Aug 2023 @ 1140 |
Tara |
Held at the same level ~3-4' below rim and still above inner tube rim. Clear water, weak but steady bubbling. |
| 27790 |
26 Aug 2023 @ 1005 |
--- |
cb |
Pool has dropped ~1.5' below overflow. It's clear, blue with a slight bubble in the center of the pool. |
| 27780 |
25 Aug 2023 @ 1934 |
--- |
cb |
pool has dropped a few inches below the scalloped edges. Still a wee bit of overflow out the established channel toward Crater Spring. still a vigorous boil in the center and pool is clear & blue |
| 27327 |
30 Jul 2023 @ 0916 |
--- |
ypcaribou |
audible overflow from back side, clear, deep blue, too steamy to see bubbles. too many people to hear bubbles |
| 27301 |
28 Jul 2023 @ 2054 |
--- |
SantaFe108 |
Center boil, overflow out front-left and back channel. Not lapping out the front or back. |
| 27167 |
23 Jul 2023 @ 1411 |
--- |
mhreed |
In overflow out the back channel. Light two-point boil. Blue. |
| 27048 |
13 Jul 2023 @ 1035 |
--- |
Polly |
Overflow in established back channel and the left front. Possible overflow along left edge. 2 point boil. |
| 27031 |
12 Jul 2023 @ 1105 |
--- |
Polly |
Overflow back left channel only. Mostly 2 point boil with a 3rd point sometimes appearing. |
| 27012 |
11 Jul 2023 @ 1115 |
--- |
Polly |
2 point boil. Overflow all along the left and perhaps out the back. |
| 26993 |
10 Jul 2023 @ 1035 |
--- |
Polly |
Overflowing into channel back left and also from front right. 2 point boil. |
| 26966 |
09 Jul 2023 @ 1507 |
--- |
cb |
clear, blue, moderate boil. overflowing out the established channel toward Crater Springs & a bit into the muddy pool |
| 26972 |
09 Jul 2023 @ 1238 |
--- |
Polly |
One blooping boil with second spot close by that has frequent bubbles rising. Overflow left back channel and front left. The pool may be a little bit higher than yesterday. |
| 26915 |
08 Jul 2023 @ 1127 |
--- |
Polly |
One blooping boil with an occasional second one. Overflow in the back channel and also to the front left. |
| 26838 |
04 Jul 2023 @ 0838 |
--- |
MAB |
full clear and overflowing - moderate 2 point boil |
| 26746 |
30 Jun 2023 @ 1106 |
--- |
cb |
clear, blue, blooping boil, overflowing into the muddy pool and out the established channel |
| 26639 |
24 Jun 2023 @ 1024 |
--- |
cb |
Pool is clear, blue, overflowing x all directions, with a blooping boil. |
| 26507 |
20 Jun 2023 @ 1333 |
--- |
SantaFe108 |
Full with blue water and bubbling in center. Overflowing through back-left and left runoff channels. Hard to tell if lapping over the whole pool edge or if wind is forcing it over. |
| 26358 |
16 Jun 2023 @ 0902 |
--- |
CrisG |
pool refilled and lightly overflowing from rear channel. light bubbling in center. |
| 26320 |
14 Jun 2023 @ 1130 |
14 Jun 2023 @ 1804 |
CrisG |
no visible or audible water this morning on walkabout and gently steaming. on evening walkabout, able to hear water sloshing and can see dark grey water in bottom of crater. |
| 26300 |
14 Jun 2023 @ 1110 |
--- |
bhoppe |
could not see any water from the boardwalk |
| 26266 |
12 Jun 2023 @ 1031 |
--- |
cb |
Cistern Springs pool has dropped to about 6' below the inner rim. water is still visable, just at the alcove. water is clear & blue with a few small bubbles breaking the surface |
| 26236 |
11 Jun 2023 @ 1004 |
--- |
cb |
pool has only dropped a few inches since last night. ~18 - 24" below overflow with some consistent bubbles breaking the surface over the vent. (tennis-ping pong ball in size). pool is clear |
| 26216 |
10 Jun 2023 @ 1140 |
--- |
bbev |
~22hrs Post Steamboat eruption, Cistern is 1' below overflow, having dropped only 6" from yesterday evening. |
| 26195 |
09 Jun 2023 @ 1600 |
--- |
Art |
Cistern about 1-2” below overflow and dropping. |
| 26133 |
07 Jun 2023 @ 1559 |
--- |
Polly |
Cistern Spring has runoff to the left back, and perhaps is fuller than it was yesterday morning. I saw only a one-point boil during my brief observation. |
| 26137 |
06 Jun 2023 @ 0958 |
--- |
Polly |
Cistern has a 2-point boil, but the second one is a bit intermittent. It is overflowing in the back left, but couldn’t see any other spots. |
| 25855 |
28 May 2023 @ 1930 |
--- |
SantaFe108 |
Overflowing with clear blue water. Bubbling in the center and lapping water over the edges. |