| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 33520 |
22 Oct 2023 @ 1308 |
--- |
mhreed |
"Colloidal Pool boiling on NW end" from https://geysertimes.org/note.php?id=29049 |
| 33517 |
17 Oct 2023 @ 1604 |
--- |
mhreed |
"COLLOIDAL POOL all lobes same color an ugly taupe - low and barely flowing past Sunday & even less flowing under the bw [boardwalk] to Scummy" from https://geysertimes.org/note.php?id=28848 |
| 33487 |
01 Oct 2023 @ 0910 |
--- |
research-mab |
10/01/2023 - 0910 am Hurricane Vent is quiet, steaming. No bubbles.
- Colloidal is steamy and murky |
| 33488 |
24 Jun 2023 @ 1030 |
--- |
research-mab |
6/24/2023 - approx inferred time - 1000-1100 - No change- Hurricane / Colloidal |
| 33489 |
04 Sep 2022 @ 1200 |
--- |
research-mab |
9/04/2022 - no time noted - Colloidal Pool looks opalescent but not a lot of colloids |
| 33516 |
18 Aug 2022 @ 1843 |
--- |
mhreed |
"Sunday and Colloidal both appear over full - channel into Scummy has water" from https://geysertimes.org/note.php?id=23254 |
| 33515 |
01 Jul 2022 @ 0835 |
--- |
mhreed |
A "steady stream of water" is flowing from Colloidal into Scummy Pool. See https://geysertimes.org/note.php?id=22275 |
| 33490 |
18 Jun 2022 @ 1200 |
--- |
research-mab |
6/18 Post Flood: - no time noted - Colloidal pool area not as vivid |
| 33514 |
16 Oct 2021 @ 1202 |
--- |
mhreed |
"Sunday and Colloidal spring's [Colloidal Pool's] pools have cleared & are no longer murky/muddy pools." from https://geysertimes.org/note.php?id=19998 |
| 33513 |
06 Oct 2021 @ 1413 |
--- |
mhreed |
"Colloidal Pool was mostly blue green and fairly clear for the past few weeks. Today it looks like thick chocolate milk. it has a few boils on the north end of the pool closest to Constant." from https://geysertimes.org/note.php?id=19920 |
| 33512 |
02 Oct 2021 @ 1313 |
--- |
mhreed |
"Colloidal pool is overflowing into it [Scummy Pool]." from https://geysertimes.org/note.php?id=19858 |
| 33511 |
23 Sep 2021 @ 1600 |
--- |
mhreed |
"Colloidal pool is very high, turquoise blue and overflowing into Scummy pool. @ 1716 both pools dropped 3" below high water mark and Colloidal pool has dropped also and not overflowing into Scummy." from https://geysertimes.org/note.php?id=19705 |
| 33510 |
16 Sep 2021 @ 1257 |
--- |
mhreed |
"Colloidal pool runoff is running into SP [Scummy Pool]." from https://geysertimes.org/note.php?id=19616 |
| 33509 |
13 Sep 2021 @ 0850 |
--- |
mhreed |
"Colloidal Pool looks like it did something- all 3 pools are gunky brown" from https://geysertimes.org/note.php?id=19546 |
| 33492 |
07 Sep 2014 @ 1200 |
--- |
research-mab |
9/7/2014 - no time noted - Colloidal Pool – the pool closest to the boardwalk has turned a milky gray color compared to the milky blue in the rest of the pool |
| 33493 |
03 Jul 2006 @ 1200 |
--- |
research-mab |
7/32006 - no time noted - Colloidal Pool Clear |
| 33494 |
03 Mar 2001 @ 1200 |
--- |
research-mab |
3/03/01 - no time noted - Basinwide disturbance is going on... Colloidal pool is muddy. |
| 33523 |
03 Mar 2001 @ 1200 |
--- |
mhreed |
No time noted. "Basinwide disturbance is going on [...] Colloidal pool is muddy." See additional observations from this date at https://geysertimes.org/date.php?date=2001-03-03 |
| 33496 |
20 Jul 2000 @ 1200 |
--- |
research-mab |
7/20/2000 - no time noted - The “strange activity” that you are seeing is weak Disturbance.... Scummy Pool, Colloidal Pool and Sunday Geyser are all “muddy”. |
| 33497 |
09 Sep 1997 @ 1200 |
--- |
research-mab |
9/9/1997 - no time noted - Congress still empty. Colloidal Pool- and Sunday geyser are more transparent and blue than their previous opaque opalescence. Less silica, more sulfur ? {? is in original mab} |
| 33699 |
30 Sep 1995 @ 1200 |
--- |
research-mab |
no times end of Sept here = Colloidal Pool-- This feature turned muddy brown the first four days of disturbance. Other than that, it remained unchanged. |
| 33698 |
29 Jul 1995 @ 0602 |
--- |
research-mab |
Disturbance activity "hit" Norris on 29 July 1995. This observer was sitting at Ledge Geyser at 06:02 when nearby Scummy Pool had what can only be described as "...a big, chocolate brown burp!" Scummy's surface surged to about 3 feet and the discharge was chocolate brown and thick. At the same time, Sunday Geyser turned muddy brown as did Colloidal Pool. Gosa SPUT Vol 9 No 5 October 1995: “Recent Disturbance Activity in the Norris Geyser Basin” reported by Smokey Sturtevant |
| 33697 |
30 Sep 1993 @ 1200 |
--- |
research-mab |
no time no date - end Sept here - Colloidal Pool – opalescent blue and relatively quiet with a few gentle boils, slight water fluctuations are common |
| 33696 |
30 Sep 1992 @ 1200 |
--- |
research-mab |
no time no date - end Sept here - Colloidal Pool – slight water fluctuation a couple to times [sic] during the season, otherwise still
opalescent blue and relatively quiet. - Congress Pool – lots of noise, but no water to be seen. |
| 33498 |
02 Aug 1992 @ 1200 |
--- |
research-mab |
8/2/1992 - no time noted - Porcelain Basin seems to have lowered water levels in Son of Scummy and Colloidal Pool. More mud
is showing. |
| 33695 |
30 Sep 1991 @ 1200 |
--- |
research-mab |
no time no date - end Sept here - Colloidal Pool - color changed from turbid gray to slightly murky blue water boiling heavily in the bottom. By May the water level had dropped out of sight and boiling could be heard very low in the chambers. Water level stayed low all season. |
| 33501 |
24 Jul 1991 @ 1200 |
--- |
research-mab |
7/24/91 - no time noted - The new fumerole near Colloidal Pool is no longer venting, but it spouting ~ 1 foot. |
| 33503 |
19 Jun 1991 @ 1200 |
--- |
research-mab |
6/19/91 - no time noted - Colloidal Pools as brilliant blue as I’ve ever witnessed. |
| 33694 |
30 Sep 1990 @ 1200 |
--- |
research-mab |
no time no date - end of Sept here - Colloidal Pool – continues to be quite turbid and gray in color [Sept 1st Disturbance same report- Colloidal Pool increased twofold in size] |
| 33504 |
06 Sep 1990 @ 1200 |
--- |
research-mab |
9-6-1990 - no time noted - Disturbance continues... Rains have stopped. Sunny and hot today. Colloidal Pool about twice its normal size. |
| 33693 |
03 Sep 1990 @ 1201 |
--- |
research-mab |
9-03-90 - no time noted - Colloidal Pool – very vigorous opaque white churning pool as opposed to milky blue & white & only moderately turbid before the disturbance. |
| 33505 |
03 Sep 1990 @ 1200 |
--- |
research-mab |
9/3/90 - no time noted - Colloidal Pool, Sunday geyser and the pool between Sunday Geyser and the Boardwalk are silty and over flowing. More new frying pan fumeroles on the opposite side of the board walk. |
| 33692 |
30 Sep 1989 @ 1200 |
--- |
research-mab |
no time no date end Sept here - Colloidal Pool – very turbid with many floating bubbles after 7/11 |
| 33506 |
29 Sep 1989 @ 1200 |
--- |
research-mab |
9/29/1989 - no time noted - Congress Pool is very high with water now covering all vents up the sides. Colloidal Pool is clear & blue! |
| 33507 |
07 Sep 1989 @ 1200 |
--- |
research-mab |
9/7/1989 - no time noted - Colloidal Pool – very muddy at surface with intense bubbling. |
| 33681 |
15 Aug 1989 @ 1200 |
--- |
research-mab |
8/15/89 - no time noted - Colloidal pool looks fuller today – my imagination? |
| 33680 |
11 Jul 1989 @ 1200 |
--- |
research-mab |
Tues July 11 1989 - no time noted - The pools in Scummy to Colloidal Areas area ll full of floating bubbles, today is the 1st I’ve ever noticed this. |
| 33691 |
30 Sep 1987 @ 1200 |
--- |
research-mab |
no time no date - end Sept here - Colloidal Pool (13): Remained a quiet opalescent blue pool. |
| 33690 |
26 Jun 1986 @ 1800 |
--- |
research-mab |
6-26-1986 - no time noted - Colloidal Pool – light, moderately cloudy turquoise blue water with complex bottom profile consisting of 5 main interconnected funnel shaped basins. Est. discharge 5gpm. T=143º |
| 33678 |
21 Aug 1985 @ 1200 |
--- |
research-mab |
8/21/1985 -no time noted - Sunday Geyser Pool = 183º = bubbling (low) in the center of the pool
Colloidal Pool = 178º- pool looked all calm, no main bubbling or boiling in the pool. |
| 33525 |
08 May 1985 @ 1200 |
--- |
mhreed |
No time noted. Colloidal Pool is "opalescent blue and fairly calm." |
| 33689 |
30 Sep 1984 @ 1200 |
--- |
research-mab |
no time no date end of Sept here - Colloidal Pool (13): remained a quiet opalescent blue pool all summer |
| 33688 |
11 Feb 1984 @ 1800 |
--- |
research-mab |
2-11-1984 - no time noted - Colloidal Pool Very turbid light gray green; est disch 5 gpm |
| 33677 |
21 May 1983 @ 1000 |
--- |
research-mab |
May 21 1983 – no time noted ~morning - Colloidal Pool– Little change from its usual appearance: light aqua. Moderate boiling. |
| 33687 |
20 May 1983 @ 1200 |
--- |
research-mab |
no time noted - Sunday Geyser - For a period of several days, Sunday splashed heavier than usual from the west end of its pool accompanied by muddying of the water. Strangely, Colloidal Pool was virtually unaffected |
| 33686 |
30 Sep 1982 @ 1200 |
--- |
research-mab |
Anonymous notes Summer 1982 - no time no date end of Sept here - COLLOIDAL POOL was a beautiful light sky blue most of the summer its 6/30 temp was 158°, its 7/6 temp 159°, at which time it was murky brown from the disturbance, its temp on 7/29 was 169°, with gentle bubbling in the center and an opalescent blue color. |
| 33676 |
22 Jul 1982 @ 1200 |
--- |
research-mab |
July 22 1982 - no time noted - Colloidal Pool 171º, light blue milky water bubbling in the center. |
| 33527 |
06 Jul 1982 @ 1345 |
--- |
mhreed |
Bracketed comments mine. "The CHANGE in features [disturbance?] occurred between 1230 and 1345 – for both basins. Colloidal – turbid and boiling, light brown color" |
| 33526 |
15 Jan 1982 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal Pool 178º bright blue slightly turbid & calm H2O" |
| 33529 |
11 Dec 1981 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal Pool 168º [F] slightly turbid blue/green and calm" |
| 33528 |
02 Aug 1981 @ 1200 |
--- |
mhreed |
No time noted. "The Basin Wide Disturbance has occurred! [...] Colloidal - 187º 2 vents boiling to 1 foot – very dark grey-brown turbid water" |
| 33674 |
05 Jul 1981 @ 1200 |
--- |
research-mab |
Sunday July 5 1981 - no time noted - Colloidal Pool seems to be hotter than usual. |
| 33673 |
02 Jun 1981 @ 1200 |
--- |
research-mab |
Tuesday June 2 1981 - no time noted - Colloidal Pool and Hurricane Vent were both partially drained – Rick H said both were higher than the previous days level. Water color gray turbid |
| 33539 |
29 May 1981 @ 1200 |
--- |
mhreed |
No time noted. "Water levels in Colloidal & Hurricane [down] 75 cm." |
| 33537 |
30 Sep 1980 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal Pool + Hurricane Vent were muddy swiss cheesy which surprised me." |
| 33685 |
30 Sep 1980 @ 1200 |
--- |
research-mab |
no time no date - end of Sept here- Colloidal Pool was an aquamarine color most of the summer and gently overflowing. During the first week of September, it turned to a turbid blue-white. Colloidal responded to the September 15, disturbance by becoming an opaque gray which darkened through the day. It boiled vigorously from three locations. Activity remained riled up through September. |
| 33535 |
22 Sep 1980 @ 1200 |
--- |
mhreed |
No time noted. "One week following the disturbance, some porcelain basin observations [...] Colloidal Pool – still bubbling with vigor, opaque gray-white" |
| 33672 |
19 Sep 1980 @ 1200 |
--- |
research-mab |
Friday Sept 19 1980 - no time noted - Blue Geyser/Iris Geyser– still muddy grey, but considerably less “thick”. Primrose springs– still muddy grey. Colloidal Pool– bubbling less intensely but still thick. |
| 33671 |
15 Sep 1980 @ 1200 |
--- |
research-mab |
Monday September 15, 1980 - no time noted - Annual Basin Wide Disturbance has occurred… or better yet, is currently occurring....k. Colloidal
Pool had turned opaque grey. As the day progressed most of the pools became increasingly turbid. |
| 33532 |
09 Sep 1980 @ 1200 |
--- |
mhreed |
No time noted. "blue, turbid water, overflowing 170°[F]" |
| 33533 |
19 Aug 1980 @ 1200 |
--- |
mhreed |
No time noted. "bubbling less intensely but still thick" |
| 33670 |
31 Jul 1980 @ 1200 |
--- |
research-mab |
July 31, 1980 - no time noted - Colloidal pool is gently boiling today |
| 33530 |
08 Jun 1980 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal Pool – lovely aquamarine color, calm 188ºF" |
| 33545 |
14 Oct 1979 @ 1200 |
--- |
mhreed |
No time noted. "Algae is beginning to grow again in the runoff channels of Porcelain basin. Colloidal Pool and Hurricane Vent have turned blue once again." |
| 33543 |
27 Sep 1979 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal Pool – 192ºF – boiling to 1 foot. Opaque greyish yellow-green color" |
| 33508 |
20 Sep 1979 @ 1800 |
--- |
mhreed |
"muddy-brown grey boiling in three locations to one foot. All trace of its beautiful blue color gone. 192ºF" |
| 33541 |
03 Sep 1979 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal Pool boiling vigorously, cloudy water. Hurahh! It finally lived up to its name this summer." |
| 33669 |
28 Jul 1979 @ 1000 |
28 Jul 1979 @ 1130 |
research-mab |
July 28 1979 Colloidal Pool 152º {noted in log 7-28 sometimes temps were collected during the week then compiled in log so temperature time is unknown} - Colloidal Pool started boiling rapidly at center – During 10:00 walk nothing. During 11:30 walk boiling |
| 33683 |
30 Jun 1979 @ 1200 |
--- |
research-mab |
- no time or date - end of month here - CONGRESS POOL is down several feet and continues to drop slowly. As is usual, activity in the pool has become stronger and more periodic with the drop in water level. One of the prettiest features is COLLOIDAL POOL which displays an intense sky blue |
| 33668 |
25 May 1979 @ 1200 |
--- |
research-mab |
May 25 1979 - no time noted - Colloidal Pool – beautiful blue temp at NE corner 170 |
| 33667 |
21 Sep 1977 @ 1200 |
--- |
research-mab |
09/21/1977 - no time noted - Colloidal Pool is becoming blue again! |
| 33551 |
04 Sep 1977 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal’s water output has dropped an inch or so" |
| 33666 |
22 Aug 1977 @ 1200 |
--- |
research-mab |
08/22/1977 -no time noted - More signs of the declining output of water: Swiss Cheese is nearly empty. Several vents below Porcelain Terrace Springs are dry. Very little runoff from Colloidal |
| 33665 |
20 Aug 1977 @ 1200 |
--- |
research-mab |
Aug 20, 1977 - no time noted - Colloidal is quite active approximately 6-7 boiling areas. Rising & falling. |
| 33548 |
19 Aug 1977 @ 1200 |
--- |
mhreed |
No time noted. "Colloidal boiling in several spots" |
| 33547 |
28 Jul 1977 @ 1200 |
--- |
mhreed |
No time noted. Temperature measured at 182 °F. |
| 33664 |
07 Jul 1977 @ 1200 |
--- |
research-mab |
07/07/1977 - no time noted - Jetsam, the Lewis Mudpot area and Colloidal have all returned to their typical blue colors. |
| 33663 |
29 Jun 1977 @ 1200 |
--- |
research-mab |
06/29/1977 - no time noted - Colloidal has become very murky |
| 33662 |
14 Jun 1977 @ 1200 |
--- |
research-mab |
06/14/1977 - no time noted - Colloidal Pool – less water discharge & splashing has subsided. Blue in coloration. |
| 33661 |
22 Sep 1976 @ 1200 |
--- |
research-mab |
09/22/1976 - no time noted - Colloidal Pool seems to be getting calmer every day. It’s now a faint green color, little activity was seen. |
| 33660 |
21 Sep 1976 @ 1200 |
--- |
research-mab |
09/21/1976 - no time noted - Colloidal still has its boiling spot but the activity is greatly reduced. |
| 33558 |
13 Sep 1976 @ 1200 |
--- |
mhreed |
No time noted. "still very active at its main boiling spot" |
| 33557 |
10 Sep 1976 @ 1200 |
--- |
mhreed |
No time noted. Bracketed comments mine. "has returned to its pre-Aug 31 [pre-disturbance] activity" |
| 33556 |
07 Sep 1976 @ 1200 |
--- |
mhreed |
No time noted. "only 2 active boiling spots now. One only goes to minor heights (~6”). The other is the main active spot." |
| 33502 |
04 Sep 1976 @ 1200 |
--- |
mhreed |
No time listed. "At Colloidal, only the main boiling spot remains active. The other 3 are seen occasionally, but only go 2-3’ high." |
| 33555 |
31 Aug 1976 @ 1200 |
--- |
mhreed |
No time noted. Bracketed comments mine. "We are for sure in the grip of an end-of-the-season change [disturbance]! Porc Basin has gone bananas! [...] Colloidal Pool has gone crazy. There are 3-4 boiling spots, all of which are constantly going. The main one is 'erupting' as high as 10 feet! This causes large waves to surge over the pool’s edge & under the boardwalk." |
| 33658 |
31 Aug 1976 @ 1030 |
--- |
research-mab |
08/31/1976 - inferred approx time - 10) Colloidal Pool has gone crazy. There are 3-4 boiling spots, all of which are constantly going. The main one is “erupting” as high as 10 feet! This causes large waves to surger over the pool’s edge & under the boardwalk.
11) Africa in noisy steam phase at 1030 |
| 33657 |
28 Aug 1976 @ 1200 |
--- |
research-mab |
08/28/1976 - no time noted - Colloidal seems much more active, at least in terms of the height the boiling patch has been reaching. |
| 33656 |
23 Aug 1976 @ 1500 |
--- |
research-mab |
08/23/1976 - inferred time - Colloidal continues to cause large waves of water to surge over its edge.
It’s pouring out! |
| 33655 |
11 Aug 1976 @ 1200 |
--- |
research-mab |
08/11/1976 - no time noted - Colloidal still boiling furiously every few minutes |
| 33654 |
03 Aug 1976 @ 1200 |
--- |
research-mab |
08/03/1976 Colloidal boiling furiously at 1200 |
| 33554 |
02 Aug 1976 @ 1230 |
--- |
mhreed |
"Colloidal Pool gently boiling at 1230. No large waves being generated." |
| 33553 |
01 Aug 1976 @ 1200 |
--- |
mhreed |
No time noted. "Blue hasn’t been seen in action at all today, and Colloidal Pool has been unusually quiet. The water level appears to have declined about 4 [inches]." Unclear if water level comment refers to Blue or Colloidal. |
| 33651 |
01 Aug 1976 @ 1200 |
--- |
research-mab |
08/01/1976 - no time noted - Colloidal Pool has been unusually quiet. The water level appears to have declined about 4”. |
| 33650 |
31 Jul 1976 @ 1200 |
--- |
research-mab |
07/31/1976 - no time noted - Colloidal Pool – seems to be enlarging. Noticed that sinter deposits around rim were cracking and slumping toward pool. |
| 33649 |
28 Jul 1976 @ 0900 |
--- |
research-mab |
07/28/1976 - inferred approx a.m. time - Colloidal Pool quiet this a.m. |
| 33648 |
26 Jul 1976 @ 1200 |
--- |
research-mab |
07/26/1976 - no time noted - Colloidal Pool still very active most of the a.m. There appears to be bubbling almost continually, but periodically there’s a large surge of activity that can be easily seen from the museum. |
| 33647 |
24 Jul 1976 @ 1508 |
--- |
research-mab |
07/24/1976 1508 Colloidal boiling vigorously |
| 33552 |
23 Jul 1976 @ 1200 |
--- |
mhreed |
No time noted. "Both Colloidal Pool and Congress Pool seem to be boiling higher today. Colloidal to 3’, Congress to 2’." |
| 33646 |
23 Jul 1976 @ 1200 |
--- |
research-mab |
07/23/1976 - no time noted - Both Colloidal Pool and Congress Pool seem to be boiling higher today. Colloidal to 3’, Congress to 2’ |