| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 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 |
| 21166 |
04 May 2022 @ 1419 |
--- |
bbev |
10hrs PSBE: pool is down 3', cloudy, no boil. |
| 21139 |
30 Apr 2022 @ 1430 |
--- |
bbev |
Cistern low, with only light runoff out back channel. All areas around spring are dry with water level ~1/2" below rim. Pool is clear with moderate boil. |
| 21068 |
24 Apr 2022 @ 1307 |
--- |
DanS |
Overflowing only through back channel |
| 21056 |
23 Apr 2022 @ 1304 |
--- |
DanS |
Below overflow for all but far runoff channel. |
| 21005 |
18 Apr 2022 @ 1820 |
--- |
MAB |
Clear blue w a 2 pt boil- not in overflow except the deep channel that points towards Echinus - zero on west terraces |
| 20949 |
06 Apr 2022 @ 1120 |
--- |
SteveO |
Overflowing and light boil in the center. |
| 20270 |
03 Nov 2021 @ 0915 |
--- |
cb |
In copious overflow in all directions! With a vigorous boil. muddy pool is very full and now has 2 outflow channels toward Echinus @ 1700 it is still the same, in crazy overflow! |
| 20267 |
03 Nov 2021 @ 0211 |
--- |
Tsunami |
*sighs* First off Park Rangers said I could be in the basin. Anyways, was noticeably down. |
| 20233 |
30 Oct 2021 @ 1200 |
--- |
bbev |
CS has been in heavy overflow for past two days, more water in every direction than l remember ever seeing, other than possibly during the last interval. There is a new,, bright green channel flowing into the "muddy pool" from Cistern. The muddy pool is no longer muddy, but clear and growing green algae on the bottom, and is establishing a new runoff, closer to the boardwalk and steerage. |
| 20144 |
27 Oct 2021 @ 1224 |
--- |
cb |
in overflow on all sides with a very, hardly noticeable, boil. boil is not audible either. Pool is a milky, opalescent blue color |
| 20122 |
25 Oct 2021 @ 1247 |
--- |
cb |
CISTERN SPRING @ 1247 has dropped 3' below overflow (water level is right at the intersection of the crossed logs. No boil, clear & blue. |
| 20072 |
21 Oct 2021 @ 1349 |
--- |
mwolf |
clear, blue, boilin, overflowin |
| 20060 |
19 Oct 2021 @ 1504 |
--- |
cb |
In copious overflow in all directions with a vigorous boil. Muddy pool is full & overflowing. |
| 20022 |
17 Oct 2021 @ 1635 |
--- |
MAB |
steamy but clear blue - overflowing every which way |
| 20003 |
16 Oct 2021 @ 1717 |
--- |
cb |
3D4.5H PE.. Cistern Spring is just barely in overflow out the established channel toward Echinus & off the backside into the bobbysock trees.
not yet overflowing toward Veteran. Pool is deep blue with a weak boil. |
| 19996 |
16 Oct 2021 @ 1136 |
--- |
cb |
CISTERN SPRING is ~1.5' below overflow with a nice boil and clear pool. |
| 19981 |
15 Oct 2021 @ 1250 |
--- |
cb |
CISTERN SPRING is down 2' below the inner tube rim. no boil. no steam. Water is a still, beautiful blue color. (still draining). |
| 19935 |
07 Oct 2021 @ 1750 |
--- |
cb |
CISTERN SPRING is still in overflow. |
| 19892 |
05 Oct 2021 @ 1832 |
--- |
cb |
7D5H.. CISTERN SPRING Is still in overflow with a VERY vigorous goil |
| 19882 |
04 Oct 2021 @ 0900 |
--- |
cb |
CISTERN SPRING is still in COPIOUS overflow in all directions. |
| 19829 |
01 Oct 2021 @ 1459 |
--- |
bbev |
3D,1hr PSBE: Overflowing in all directions with moderate boiling, clear blue pool. |
| 19818 |
30 Sep 2021 @ 1757 |
--- |
cb |
water level is 5' below the inner rim and rising with a fairly vigorous boil. color is milky blue. |
| 19805 |
30 Sep 2021 @ 1153 |
--- |
cb |
1D 22H PE. 1153 CISTERN SPRING is filling, water level way down in the vent and just barely visible at this time. ( below the 2 "holes" on the east side) Audible churning with a lot of steam. |
| 19780 |
29 Sep 2021 @ 0900 |
--- |
cb |
19.5 Hours PE. CISTERN SPRING is completely drained with no visible water & barely steaming. Vent & bottom was easily visible on this chilly morning. |
| 19749 |
26 Sep 2021 @ 1600 |
--- |
cb |
throughout the day Cistern was in copious overflow in all directions with a good, broad roiling boil. |
| 19578 |
15 Sep 2021 @ 0858 |
--- |
cb |
CISTERN SPRING water is ~ 1' below the rim of the inner tube and has a audible boil. To steamy to accurately view. |
| 19558 |
14 Sep 2021 @ 0941 |
--- |
cb |
3D3H .. Cistern spring is filling. No visable water yet but it has a VERY audible roiling boil with heavy steam. |
| 19527 |
13 Sep 2021 @ 1019 |
--- |
cb |
CISTERN SPRING @1019 has no visable water or audible sounds but has a fair amount of steam coming from deep down in its vent. |
| 18741 |
30 Jul 2021 @ 0555 |
--- |
ypcaribou |
Just below overflow. Right shoulder dry. Muddy Pool is more of a mud pit with a puddle of water in the center. |
| 18577 |
22 Jul 2021 @ 0930 |
--- |
Tara |
Milky blue, weak boil. Water level ~1cm below rim, overflow out back and west channels |
| 17614 |
09 Jun 2021 @ 1807 |
--- |
Craigmon99 |
Has become noticeably less opalescent and more clear in my 1.5 hours at Norris |
| 17601 |
09 Jun 2021 @ 0940 |
--- |
Tara |
Full, milky blue, light boil. |
| 17579 |
08 Jun 2021 @ 1009 |
--- |
cb |
pool is high with a weak boil and weak overflow to the south and a little over the backside. @ 1200 overflow has improved. A bit into the muddy pool, better flow out the established runoff channel to the south and catch basins are full and overflowing |
| 17537 |
07 Jun 2021 @ 1647 |
--- |
novakg |
Gorgeous off blue, gently boiling and in overflow in several places. Sorry, I didn't make careful notes. |
| 17513 |
06 Jun 2021 @ 0837 |
--- |
bbev |
5D, 20.5 hr PSBE; CS is high and overflowing out back channel, and has yet to reach overflow to the NW terraces or into muddy pool. Light, 3 point boil in opalescent light blue pool |
| 17478 |
05 Jun 2021 @ 1443 |
--- |
steve |
About a foot or slightly more below overflow and bubbling. Opalescent light blue color. |
| 17473 |
05 Jun 2021 @ 0924 |
--- |
cb |
4D22.5H PE. Water is up to the rim of the inner tube. it has a blopping boil. @1002 it's filling fast this morning! In a half hours time water has come up ~ 4" to past the rim |
| 17444 |
04 Jun 2021 @ 1620 |
--- |
cb |
4D 4.5H PE Cistern Spring water level has only come up a few inches since this morning observation. It is just covering (lapping over) the 2 holes inside the cave on the south side. Still has a vigorous boil. |
| 17445 |
04 Jun 2021 @ 0943 |
--- |
cb |
3D22H PE. Cistern spring is filling. water is at the 2 holes near the Cave about 6' from the inner rim.with a vigorous boil. |
| 17448 |
04 Jun 2021 @ 0804 |
--- |
bbev |
3D, 20hrs PSBE: water heard, and vigorous boiling seen, by standing on railing, deep in crater. Appears to be refilling, very steamy on warm morning. |
| 17400 |
03 Jun 2021 @ 0730 |
--- |
cb |
Cistern spring is lightly steaming. no visible or audible signs of water in the pool. |
| 17388 |
02 Jun 2021 @ 1420 |
--- |
Tara |
Empty and quiet, water not visible yet. |
| 17385 |
02 Jun 2021 @ 0955 |
--- |
Tara |
Completely dry, no water visible, light steam. |
| 17315 |
31 May 2021 @ 1342 |
--- |
molliepope |
Cistern has dropped about 2-3 inches. Small amount of bubbles reaching surface in center of pool. |
| 17192 |
26 May 2021 @ 0830 |
--- |
Suzanne |
Full and overflowing in all directions, with a good boil. |
| 17084 |
14 May 2021 @ 0930 |
--- |
cb |
Cistern spring pool is high and overflowing in all directions, especially out of the established runoff channel to the south. |
| 17046 |
11 May 2021 @ 1120 |
--- |
cb |
Cistern spring is overflowing in all directions. Can't see boil through the steam. |
| 17032 |
09 May 2021 @ 1146 |
--- |
bbev |
4D, 12hrs PSBE, full and overflowing in all directions. Pool is clear with steady roiling boil. |
| 17005 |
06 May 2021 @ 1934 |
--- |
bbev |
1D, 19.5 hrs PSBE; slightly steamy which is only sight of water. |
| 17003 |
06 May 2021 @ 0928 |
--- |
MAB |
Completely empty-very light steam for the cool morning- no sound |
| 16924 |
26 Apr 2021 @ 1042 |
--- |
DanS |
Full overflowing all directions with 2 point boil. |
| 16898 |
20 Apr 2021 @ 1810 |
--- |
MAB |
in overflow - variable boil w a pretty blue color. VR of overflow in midafternoon as well |
| 16846 |
06 Feb 2021 @ 1430 |
--- |
Micah Kipple |
Water visible way down in vent. Just starting to refill(?) |
| 16825 |
24 Jan 2021 @ 1509 |
--- |
markwolf |
1-2 cm below rim. good boil |
| 16791 |
24 Dec 2020 @ 1443 |
--- |
Micah Kipple |
Full. Boiling, and overflowing on all sides. |
| 16787 |
23 Dec 2020 @ 1427 |
--- |
Micah Kipple |
Full. Overflowing with a 2 point light roiling/boil in the center. |
| 16489 |
30 Oct 2020 @ 1245 |
--- |
steve |
Custer is boiling strong with good overflow. |
| 16485 |
29 Oct 2020 @ 1752 |
--- |
MAB |
In overflow east and west. Too steamy to see southward |
| 16480 |
29 Oct 2020 @ 0939 |
--- |
MAB |
1.5 ft below the scallops. Too steamy to see but I heard bubbles breaking |
| 16457 |
26 Oct 2020 @ 1217 |
--- |
markwolf |
still low today |
| 16429 |
15 Oct 2020 @ 1130 |
--- |
markwolf |
still very low (not visible from boardwalk) and very little steam on this chilly day. |
| 16409 |
11 Oct 2020 @ 1905 |
--- |
cb |
5D22H PE. Pool has dropped a little. Water is lapping at just below the scalloped edges of the pool. Overflowing out the established runoff channel to the south and a bit out the backside. Runoff channel toward Veteran is trickling into the catch basin but not any further. |
| 16401 |
10 Oct 2020 @ 1243 |
--- |
cb |
pool is high and covering the scalloped edges. Overflowing on all sides and filling catch basins in front of the boardwalk, to the West, flowing into the muddy pool and a heavy flow out of the established runoff channel to the south. (like a river!) It has a mediocre boil. |
| 16366 |
08 Oct 2020 @ 1022 |
--- |
bbev |
2D, 13hrs PSBE: 24-30" below overflow. |
| 16362 |
07 Oct 2020 @ 1835 |
--- |
cb |
. Cistern spring is filling. Water is ~6' below the rim of the inner tube. (cave in the tube to the south) water is clear and it has a vigorous boil. |
| 16357 |
07 Oct 2020 @ 0905 |
--- |
cb |
1D12H PE. Cistern Spring is beginning to refill. |
| 16353 |
06 Oct 2020 @ 1018 |
06 Oct 2020 @ 1610 |
cb |
@ 1018 (13H15M) into the eruption. Cistern Spring is down ~1.5' below the inner tube rim. It is calm, steamy and blue!
@1149 Cistern Spring is down 2' from rim of inner tube.
@1551 (19 H) Cistern Spring is empty of all visable water. |
| 16335 |
05 Oct 2020 @ 0815 |
05 Oct 2020 @ 1915 |
cb |
9D9H PE. Cistern Spring is overflowing to the south and backside with a vigorous blooping boil. |
| 16325 |
03 Oct 2020 @ 0930 |
03 Oct 2020 @ 1930 |
cb |
7D9H PE. Cistern spring is low again like last interval. Only overflowing out the established channel toward the south. It has a very vigorous blooping boil 3 - 5". |
| 16318 |
02 Oct 2020 @ 0930 |
--- |
cb |
5D23H PE. Cistern Spring is overflowing out the established runoff to the south, minimally out the back side and to the west. |
| 16309 |
29 Sep 2020 @ 1835 |
--- |
cb |
3D8H PE. Cistern Spring is barely overflowing on the south, west and backside. There is a trickle of water approaching the muddy pool. It's mainly overflowing out the established channel to the south. It has a mediocre boil. |
| 16297 |
28 Sep 2020 @ 1418 |
--- |
bbev |
Heavy boil now just visible from boardwalk in front of spring, 5-6' below rim of inner tube. Up maybe 1' from 6 hours ago. |
| 16296 |
28 Sep 2020 @ 0840 |
--- |
bbev |
1D, 22hrs PSBE; Cistern also steamy. Can hear water and only able to see vigorous boiling by standing on middle rail in front of the spring. |
| 16293 |
27 Sep 2020 @ 1855 |
--- |
Ajw |
Pool is completely drained. Only a faint hint of steam from crater. |