| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 29434 |
31 Oct 2023 @ 1658 |
--- |
MAB |
seafoam green color with creamy band of suspended sediments at the edges - little vent midway up pool on N side still sputtering and creating ripples but not as strong as seen previously |
| 28905 |
20 Oct 2023 @ 0800 |
--- |
MAB |
still agitated by the vent halfway up the right side on the edge of the pool |
| 28800 |
14 Oct 2023 @ 1742 |
--- |
MAB |
Agitated by waves coming from a vent along the edge midway up the pool on the right side |
| 25529 |
18 May 2023 @ 0905 |
--- |
MAB |
full - green with floaties - French gray color sediments around sides |
| 24522 |
29 Oct 2022 @ 1805 |
--- |
MAB |
full aqua greenish color with french gray clay color sediments around all sides - slight ripple waves from vent on the west end |
| 24295 |
07 Oct 2022 @ 1217 |
--- |
DanS |
Jetsam is a colloidal light aquamarine color. Edge spouter not active. |
| 23051 |
05 Aug 2022 @ 1307 |
--- |
cb |
Jetsam pool is high again. ~3" below overflow & clay colored. |
| 23013 |
03 Aug 2022 @ 1129 |
--- |
cb |
Pool level has dropped to ~1' below overflow. A weak boil over the far north end of the pool on the edge. color is very watery light brown. |
| 21070 |
24 Apr 2022 @ 1410 |
--- |
DanS |
Pool in overflow. Small unng on edge of pool not erupting. |
| 21039 |
18 Apr 2022 @ 1255 |
--- |
MAB |
full cloudy blue with whitish suspended matter on the edges similar to last fall |
| 20173 |
28 Oct 2021 @ 1521 |
--- |
MAB |
seafoam green color with whitish edges - full |
| 19703 |
23 Sep 2021 @ 1555 |
--- |
cb |
Water level is all the way up to high water mark and very close to overflow. side vent is active and erupting to 1'. color of water is a aqua blue. |
| 19615 |
16 Sep 2021 @ 1154 |
--- |
cb |
Jetsam is 1' below rim with the side vent toward the Palm pool splashing to ~1'. And a small new feature below Jetsam in Ledge's runoff channel erupting to 6". |
| 19001 |
22 Aug 2021 @ 0903 |
--- |
MAB |
cloudy seafoam green in color - full |
| 18766 |
31 Jul 2021 @ 0839 |
--- |
MAB |
down 1.5ft - still clay brown color - no visible boils |
| 18665 |
25 Jul 2021 @ 1815 |
--- |
cb |
pool down 3'+ |
| 18582 |
22 Jul 2021 @ 1250 |
--- |
Tara |
Light brown muddy water, down 1.5 feet, bubbling in NW side |
| 18298 |
06 Jul 2021 @ 0847 |
--- |
MAB |
Down 2 feet!! Still the same odd french gray clay color |
| 17547 |
07 Jun 2021 @ 0858 |
--- |
MAB |
full enough to flow out west notch - shoulder vent active - strong bubblers on NW edge |
| 16957 |
29 Apr 2021 @ 1455 |
--- |
DanS |
UNNG at edge of Jetsam erupting. |
| 16927 |
26 Apr 2021 @ 1122 |
--- |
DanS |
UNNG at edge of Jetsam is active. |
| 16278 |
26 Sep 2020 @ 1410 |
--- |
cb |
Jetsam pool is high, 3" below overflow |
| 11016 |
20 Apr 2019 @ 0917 |
--- |
MAB |
Full, a pretty Green color, the shoulder vent erupting gangbusters. |
| 10509 |
30 Sep 2018 @ 1030 |
30 Sep 2018 @ 1610 |
MAB |
About a foot above water level and a meter south of the existing fracture/spouter, steam was visible in the morning at the farthest end of the depression, in warmer afternoon one could see tiny blips in the water closer to Jetsam in the depression. In other news Jetsam was full and in overflow with slight convection. |
| 9621 |
10 Aug 2018 @ 1607 |
--- |
MAB |
Side vent active but not as tall as seen previously. Pool is closer to overflow. |
| 9383 |
01 Aug 2018 @ 1620 |
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MAB |
The vent on the south shoulder of Jetsam is displaying bursts to 3-4 feet! Some stronger than others. Jetsam itself is well below overflow. This seen again around 1715 and walking out 1843 |
| 7721 |
17 Oct 2017 @ 0935 |
--- |
MAB |
Spouter on south rim still active through the day- I think the vent is larger too. Jetsam is full- slight trickle overflow to SW |
| 6291 |
11 Sep 2017 @ 0930 |
11 Sep 2017 @ 1800 |
MAB |
Water level a bit lower - the spouter on the south (left) rim has enlarged its vent and frequently splashing - some up to 2 feet. |
| 5680 |
03 Sep 2017 @ 1907 |
--- |
srboom |
Splashing from vent on south side of pool. |
| 5364 |
24 Aug 2017 @ 1000 |
--- |
MAB |
Spouter on the south rim of Jetsam is quite active - vent area looks enlarged |
| 4213 |
04 Jun 2017 @ 1600 |
--- |
MAB |
The scummy floating mats that were present on opening have sunk. Jetsam looks hotter with clear water and is overflowing to the south from the west end. |
| 3385 |
28 Jul 2016 @ 1309 |
--- |
MAB |
Little side vent on the south rim of Jetsam was active today. Also seen IE at 1850. You can hear the wave-slosh inside before water comes out, kinda fun |
| 3150 |
28 Jun 2016 @ 1003 |
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MAB |
The vent in the center on the south side of Jetsam (above full pool water level) was sputtering to 6-8". Not as much of an 'eruption' as seen on my last visit-but could be worth watching. I didn't make it back there to see it again. Be sure to look there when you drop into Porcelain. |
| 29438 |
11 Jul 2012 @ 0839 |
--- |
research-mab |
7/11/2012 Pool below Ledge nearly dry 0839 [added as Jetsam] |
| 29903 |
15 Jun 1999 @ 1400 |
--- |
research-mab |
6/15 Interesting note: Pool just before Basin Geyser (going down to Porcelain Basin) was empty @2pm on 6/15 – first time I’ve seen it not green & “full”. And at ~4pm going back up I checked it again & it was over full & almost clear – just a little green tinge. |
| 29923 |
06 Apr 1998 @ 1200 |
--- |
research-mab |
4/6/1998 - no time noted - Lots of interesting things going on in Porcelain Basin... We have a new thermal feature! A high pressure, super heated steam vent has broken out on the rim of Jetsam Pool. This vent is part of a large group on the side towards Jetsam and several in the runoff of Ledge. The temp is 97.8 C at the vent and the steam is pretty high pressure. Ledge is in a quiet mode. There has been some kind of change in the water though. The growth in the runoff channel is very new. There is also some interesting deposition near the vent. |
| 30051 |
10 May 1995 @ 1200 |
--- |
research-mab |
Thursday May 10, 1995 - no time noted - Looks like there may be algae growing at Jetsam at least I see green scum on the surface. |
| 30915 |
08 May 1985 @ 1200 |
--- |
research-mab |
Wednesday May 8 1985 - no time noted - Jetsam was clear and light blue; some water flows from the western lip above Basin G. |
| 7617 |
11 Feb 1984 @ 1800 |
--- |
research-mab |
02/11/1984 Jetsam Pool No change in water level due to leakage. Opaque Turbid – light gray brown. |
| 31284 |
06 Jul 1982 @ 1505 |
--- |
research-mab |
July 6 - approx time - The CHANGE in features occurred between 1230 and 1345 – for both basins - Temperatures taken at 1505-1600 :-
Jetsam Pool – 197º, muddy & boiling |
| 31254 |
20 Feb 1982 @ 1200 |
--- |
research-mab |
February 20 1982 - no time noted - Jetsam Pool 174º blue-green slightly turbid H20 with an occasional bubble |
| 31197 |
15 Jan 1982 @ 1200 |
--- |
research-mab |
January 15th, 1982 - no time noted - Jetsam Pool 168º blue-green slightly turbid H20 w/an occasional bubble |
| 31584 |
27 Nov 1981 @ 1200 |
--- |
research-mab |
Nov 27th 1981 - no time noted - Jetsam Pool clear blue water w/slight turbidity, boiling gently 156° |
| 31555 |
12 Sep 1981 @ 1200 |
--- |
research-mab |
Sept 12 1981 - no time noted - Jetsam 189° 2 sm vents bubbl. 1’ high, gray/grn turbid water |
| 31546 |
31 Aug 1981 @ 1200 |
--- |
research-mab |
Monday Aug 31 1981 - no time noted - Jetsam Pool turbid greeny-gray 190° 2 bubbling areas of 4” high |
| 31529 |
17 Aug 1981 @ 1200 |
--- |
research-mab |
Monday 17 August 1981 - no time noted - Jetsam Pool is more active, 1 vent bubbling 8-10” contin. |
| 31795 |
22 Sep 1980 @ 1200 |
--- |
research-mab |
Monday Sept 22, 1980 - no time noted - One week following the disturbance, some porcelain basin observations: Jetsam Pool – Turbid, bubbling 189ºF |
| 31735 |
06 Sep 1980 @ 1200 |
--- |
research-mab |
Sat Sept 6 1980 - no time noted - Jetsam Pool Murky grey-green water. No overflow 180°F |
| 31613 |
08 Jun 1980 @ 1200 |
--- |
research-mab |
June 8 1980 - no time noted - Jetsam Pool – murky blue-grey water, 172ºF |
| 5107 |
30 Jun 1977 @ 1800 |
--- |
research-mab |
06/30/1977Jetsam pool has turned into a Sulphur Cauldron today – almost yellow.
The mud pot out by Lewis mudpot has gone completely dry. |
| 5681 |
02 Sep 1975 @ 1800 |
--- |
research-mab |
09/02/1975
Jetsam Pool – down one foot in water level, Pool is turbid. |
| 5661 |
29 Aug 1975 @ 1800 |
--- |
research-mab |
08/29/1975
Jetsam down 18” |
| 5662 |
28 Aug 1975 @ 1800 |
--- |
research-mab |
08/28/1975
Jetsam down 2’ |
| 5605 |
09 Jul 1975 @ 1800 |
--- |
research-mab |
07/09/1975 Jetsam down 2’ (since tremors) |
| 6179 |
22 Sep 1973 @ 1800 |
--- |
research-mab |
09/22/1973
Congress blue color. Jetsam - clear & green |
| 6138 |
11 Sep 1973 @ 1800 |
--- |
research-mab |
09/11/1973 Jetsam Pool has returned to a green color. |
| 6084 |
26 Aug 1973 @ 1800 |
--- |
research-mab |
08/26/1973 Jetsam pool still grey |
| 6070 |
20 Aug 1973 @ 1800 |
--- |
research-mab |
08/20/1973 Jetsam Pool is gray instead of Turquoise. |
| 6457 |
10 Sep 1972 @ 1800 |
--- |
research-mab |
09/10/1972
Jetsam Pool – the bubbling activity has ceased on the NW half of the pool & has shifted to the SE. Also, the dark gray runoff channel is being coated in part by a light pinkish flesh colored deposit. |
| 6504 |
15 May 1972 @ 1800 |
--- |
research-mab |
05/15/1972 Jetsam – milky greenish grey, bubbling 193º |
| 6583 |
09 Sep 1971 @ 1800 |
--- |
research-mab |
09/09/1971 In the evening a tour was made of the basins and additional changes were noted: The water level in Jetsam pool has dropped a little over an inch and as a result, there is less than half the runoff that there was for the past month.
{evening observations} |
| 6578 |
09 Sep 1971 @ 1200 |
--- |
research-mab |
09/09/1971
Jetsam is now a light gray instead of the beautiful sky blue that it has been for many weeks. Also the activity in the pool seems to have increased. {morning} |
| 6562 |
31 Jul 1971 @ 1800 |
--- |
research-mab |
07/31/1971 Jetsam Pool is having a lot more runoff and is becoming a more clear light blue color. |
| 6560 |
22 Jul 1971 @ 1800 |
--- |
research-mab |
07/22/1971
Other changes have been noticed around Ledge & Valentine Geyser; one is that the hole in the side of the hill west of Valentine is larger with water in the bottom of it; Jetsam Pool has a greater discharge (over 2X than before the eruption of Ledge, also the point of greatest boiling has shifted in part from east of center to the north west edge and then shifted back again. |
| 6597 |
07 Sep 1970 @ 1800 |
--- |
research-mab |
09/07/1970
Jetsam pool has been starting to clear up in the past couple of weeks, |
| 6618 |
01 Sep 1970 @ 1300 |
--- |
research-mab |
09/01/1970
A survey of pools and geysers in the area made during the {Ledge} eruption showed that Jetsam Pool had a larger volume (3 times) of run-off than usual. Basin was about completely drained with a small amount of water splashing about in the bottom of its fissure.
As I write this at 3:55 there is still a considerable amount of steam still emerging under pressure from the Ledge geyser. |
| 6612 |
15 Jul 1970 @ 1800 |
--- |
research-mab |
07/15/1970
Jepsam pool {Jetsam} is full again, the heavy bubbling activity has shifted toward the middle & east end & the surface has an oily texture. |
| 6611 |
14 Jul 1970 @ 1800 |
--- |
research-mab |
07/14/1970
Jepsam pool {Jetsam} is becoming slightly more active like in June. The water level of the pool which had been practically full for the past couple of weeks appears to have dropped 2-3 inches since yesterday. |
| 6608 |
21 Jun 1970 @ 1800 |
--- |
research-mab |
06/21/1970
{Jetsam} is very full but height of eruption down. {no time} |
| 6607 |
20 Jun 1970 @ 0730 |
--- |
research-mab |
06/20/1970
Jepsam pool {Jetsam} up to level which covers the pool floor. Porcelain drainage stream below it was very muddy again. |
| 6606 |
19 Jun 1970 @ 1800 |
--- |
research-mab |
06/19/1970
Jepsen Pool {Jetsam} ejected muddy water 20-30 feet in AM, water level down considerably but up almost to June 18 level at 9:45PM. Porcelain drainage cloudy in AM, clear at 9:25 PM |
| 6605 |
18 Jun 1970 @ 1800 |
--- |
research-mab |
06/18/1970
Jepsen Spring [Jetsam} 198ºF became very active yesterday throwing very muddy water up to 6-8 feet at highest. A lot of the muddy water was sloshed out, making part of the drainage stream for Porcelain Basin turbid. |