| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 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. |
| 25724 |
23 May 2023 @ 1512 |
--- |
cb |
no change since ladt report |
| 25667 |
21 May 2023 @ 1450 |
--- |
SantaFe108 |
Clear and blue, bubbling in the center, and overflow and lapping water at the edges. |
| 25460 |
15 May 2023 @ 1824 |
--- |
ypcaribou |
Full, turquoise, steamy, quite clear. Muddy pool full. As seen from boardwalk zag below SB. From CS sign, constant, rolling burbling. Runoff to west, east, and vigourously to s east. Audible runoff. |
| 25149 |
11 Apr 2023 @ 1000 |
--- |
mhreed |
Overflowing on all sides. |
| 25058 |
27 Feb 2023 @ 1532 |
--- |
MAB |
Very pretty clear blue! Runoff only towards Echinus - Muddy Pool and westerly channel snow covered |
| 24644 |
05 Nov 2022 @ 1600 |
--- |
mhreed |
Dropped to only a trickle of overflow. |
| 24531 |
29 Oct 2022 @ 1407 |
--- |
MAB |
Clear w strong center roil - muddy pool and 1st pool on the right receiving flow again but not entirely full |
| 24470 |
21 Oct 2022 @ 0834 |
--- |
MAB |
Below E/W overflow maybe an inch - nothing flowing in channels to muddy pool and 1st pool on the west - light boil |
| 24282 |
06 Oct 2022 @ 1326 |
--- |
cb |
Cistern Spring is overflowing in all directions; more so out the established channel than toward Veteran. |
| 24032 |
23 Sep 2022 @ 1633 |
--- |
MAB |
water not visible from lower platform - seemingly out of sight from 1st switchback but in deep shadow - no obvious bear tracks visible near the opening between Emerald and Steamboat |
| 24033 |
23 Sep 2022 @ 1115 |
--- |
MAB |
water barely visible from lower platform |
| 23971 |
20 Sep 2022 @ 1916 |
--- |
ypcaribou |
No obvious rise or fall in water level. Still half way between inner tube and top. |
| 23951 |
20 Sep 2022 @ 1540 |
--- |
ypcaribou |
Water about half way between top and inner tube. Bubbling in middle. Windy so hard to tell if bubbles are causing any of the ripples.A spooky teal. |
| 23933 |
20 Sep 2022 @ 1055 |
--- |
bbev |
1D,20hrs PSBE: CS is 24-26" below overflow, about half way down to the inner tube.Occasional bubbles rising to surface, would not call it a boil. |
| 29108 |
19 Sep 2022 @ 1100 |
--- |
research-mab |
9/19/2022 1100ish Cistern drained a few feet |
| 23494 |
31 Aug 2022 @ 1025 |
--- |
cb |
VERY low, clear, typical boil & only overflowing out the established channel |
| 23314 |
21 Aug 2022 @ 0719 |
--- |
ypcaribou |
Nice, deep, sea glass blue, roiling in middle, water lapping at all edges. Flow out of established channel. Nice orange in front to right area where water looks to have been but now just damp with no or little standing water. Steam increases when Steamboat does a good splash. Steam also increases at Echinus and Crater Spring at same time. |
| 23106 |
08 Aug 2022 @ 1919 |
--- |
cb |
only overflowing out the established channel. water is blue and clear with a 2pt vigorous boil |
| 23075 |
06 Aug 2022 @ 1116 |
--- |
cb |
no change |
| 23046 |
05 Aug 2022 @ 1018 |
--- |
cb |
pool is just at the scalloped edges. only overflowing into the muddy pool & the established channel. Meh blooping boil |
| 23010 |
03 Aug 2022 @ 1514 |
--- |
cb |
bit lower than yesterday morning. (before the rain) Overflow out the backside, the established channel & a bit into the muddy pool. Not overflowing toward Corporal. weaker roiling boil. water is clear and blue. |
| 22977 |
02 Aug 2022 @ 0946 |
--- |
cb |
Cistern Spring is higher again and overflowing in all directions. It has a vigorous 2 pt blooping boil. water is blue and clear |
| 22964 |
01 Aug 2022 @ 1315 |
--- |
cb |
Cistern Spring is overflowing out the established channel and has a vigorous 2 pt blooping boil. |
| 22946 |
30 Jul 2022 @ 1301 |
--- |
cb |
Cisterns pool is just lapping at the scalloped edges & is overflowing out the established channel area. This area still is a rainbow sherbet color. Backside and side toward Veteran is mostly dry. |
| 22859 |
26 Jul 2022 @ 1230 |
--- |
cb |
majority of runoff is out the established channel. toward Veteran and into the bobbysock trees is mostly dry. Typical boil, clear pool |
| 22795 |
22 Jul 2022 @ 1930 |
--- |
Dan A |
Back to overflowing in all directions |
| 22728 |
20 Jul 2022 @ 1303 |
--- |
cb |
pool had dropped a hair. Side toward Corporal, below the catch basin has dried up as have areas on the backside in the bobbysock trees. Water is right at the scalloped edges of the pool with the majority of runoff going out the established channel toward Echinus. water is clear with a typical boil. (not more, not less) |
| 22701 |
19 Jul 2022 @ 1157 |
--- |
cb |
high and overflowing. The bacterial mat area around and below the established runoff channel is a brilliant rainbow sherbet color again! |
| 29089 |
17 Jul 2022 @ 1200 |
--- |
research-mab |
7/17/2022 - no time noted - Cistern developing sulfuric (yellow) ring & yellow in runoff |
| 22624 |
16 Jul 2022 @ 1218 |
--- |
cb |
no change. pool still high and overflowing X all. vigorous boil & clear |
| 22492 |
11 Jul 2022 @ 1617 |
--- |
cb |
Cistern Spring pool is high, clear, overflowing X all with a nice boil. |
| 22313 |
04 Jul 2022 @ 1416 |
--- |
cb |
Repeat...pool is high, overflowing X all & vigorous boil |
| 22288 |
02 Jul 2022 @ 1316 |
--- |
cb |
pool is still very high and overflowing in all directions |
| 22247 |
30 Jun 2022 @ 1403 |
--- |
cb |
same...high overflowing X all with vigorous blooping boil |
| 22142 |
26 Jun 2022 @ 1852 |
--- |
cb |
Overflowing in all directions, clear, blue with a vigorous blooping (3"-4") boil |
| 22113 |
25 Jun 2022 @ 1103 |
--- |
cb |
CS is in copious overflow on all sides with a 6" vigorous blooping boil. |
| 22105 |
24 Jun 2022 @ 0804 |
--- |
bbev |
CS in copious overflow in all directions with strong, 6" blooping boil. |
| 22093 |
23 Jun 2022 @ 1827 |
--- |
cb |
overflowing in all directions. clear with moderate boil |
| 22097 |
23 Jun 2022 @ 0802 |
--- |
bbev |
CS appears to have recently began overflow to the north, towards Veteran, upper catch basins filling. Overflowing out back channel with trickle into muddy pool. |
| 22065 |
22 Jun 2022 @ 1329 |
--- |
cb |
CS water is just within sight down in the inner tube. ~6' from inner tube rim (at the base of the cave). Vigorous boil. refilling. ** @ 2025 2D5H Cistern Spring is ~1' below the inner tube rim. it has a vigorous boil and water is clear blue. |
| 21980 |
13 Jun 2022 @ 2000 |
--- |
Dan A |
3D8.5H PE cistern is overflowing in all directions with a nice big boil |
| 21947 |
12 Jun 2022 @ 0956 |
--- |
cb |
D22.5H. 48° raining steadily. Cistern Spring is empty. A father put his young son on his shoulders to see if there was any visable water. No visable water in the vent according to this smart young lad! |
| 21916 |
11 Jun 2022 @ 0849 |
--- |
cb |
water is ~5' below the inner tube rim, or just at the "cave" in the tube. color is blueish green. |
| 21905 |
10 Jun 2022 @ 1315 |
--- |
novakg |
Cistern was out of overflow, but had not dropped much |
| 21788 |
06 Jun 2022 @ 1130 |
--- |
cb |
moderate boil, water level just a hair below the scalloped overflow rim & only overflowing out the established channel. |
| 21635 |
01 Jun 2022 @ 1400 |
--- |
cb |
CS is only overflowing out the established channel toward Echinus. water is clear and has a moderate boil |
| 21540 |
27 May 2022 @ 1841 |
--- |
cb |
pool is high & overflowing into the muddy pool & out the established channel to the south and MAYBE some is dribbling out the backside toward Tantalus via wind pushed waves. Nothing out of the side toward Veteran or the boardwalk. It has a weak boil. water is clear & blue. |
| 21515 |
26 May 2022 @ 1413 |
--- |
cb |
3D5.5H PE. 1' BELOW the inner rim with a vigorous 2 point boil |
| 21476 |
25 May 2022 @ 0925 |
--- |
TSBryan |
empty |
| 21468 |
24 May 2022 @ 1904 |
--- |
cb |
Cistern Spring has drained. no water or steam observed |
| 21436 |
23 May 2022 @ 1636 |
--- |
cb |
8HR IE. down ~2' calm clear and blue |
| 21435 |
23 May 2022 @ 1247 |
--- |
cb |
4H into eruption, CS has dropped ~1' below overflow & is calm, clear and blue |
| 21395 |
20 May 2022 @ 2105 |
--- |
ypcaribou |
Per SB post: CS is only flowing out the back channel that I can tell. |
| 21348 |
17 May 2022 @ 0800 |
17 May 2022 @ 2000 |
ypcaribou |
Per SB entry: Cistern Spring overflowing out the established back channel only with a moderate boil. |
| 21326 |
16 May 2022 @ 1350 |
--- |
Tara |
Overflowing out the back channel, blooping boil in center of pool. |
| 21277 |
14 May 2022 @ 1200 |
--- |
cb |
Cistern Spring is only overflowing out the established channel on the south end of its pool. (toward Echinus) It has a weak boil. |
| 21244 |
11 May 2022 @ 0900 |
--- |
MAB |
overflowing every which way |
| 21213 |
07 May 2022 @ 1415 |
--- |
cb |
CS is filling. Water is ~4 - 5' below the rim of the inner tube. (right at the "cave" in the inner tube.) It has a substantial boil. It was difficult to see with my 1 good eye and through the snow squall & steam. I just waited for the wind direction to change and got a good view. |
| 21199 |
06 May 2022 @ 1430 |
--- |
MAB |
empty per maramom |
| 21175 |
05 May 2022 @ 1144 |
--- |
cb |
pool is empty, no visable water or steam |