Last Known Eruption
2d 9h 18m ago

Latest Eruptions

Eruption DurationInterval
01 Mar 2024 @ 0925 ie34d 18h 55m
26 Jan 2024 @ 1430 ie96d 5h 34m
22 Oct 2023 @ 0956 ie>12m 18h 11m
21 Oct 2023 @ 1545 ie323h 15m
20 Oct 2023 @ 1630 ie2d 23h 18m
17 Oct 2023 @ 1712 ns5d 1h 2m
12 Oct 2023 @ 1610 ie3m 3d 5h 54m
09 Oct 2023 @ 1016 ie10d 23h 33m
28 Sep 2023 @ 1043 ie3d 20h 6m
24 Sep 2023 @ 1437 ie1h 48m
24 Sep 2023 @ 1249 ie3d 22h 31m
20 Sep 2023 @ 1418 ie53d 17h 22m
28 Jul 2023 @ 2056 ie3h 33m
28 Jul 2023 @ 1723 ie38d 4h 8m
20 Jun 2023 @ 1315 ns10m
20 Jun 2023 @ 1305 ie2d 18h 44m
17 Jun 2023 @ 182114m 31s 25m
17 Jun 2023 @ 175616m 7s 1h 32m
17 Jun 2023 @ 162414m 33s 21m
17 Jun 2023 @ 1603~12m 15s 1d 3h 54m
16 Jun 2023 @ 12091h 55m
16 Jun 2023 @ 101421m
16 Jun 2023 @ 09531d 16h 47m
14 Jun 2023 @ 170617m
14 Jun 2023 @ 1649 ie4h 23m
14 Jun 2023 @ 12263d 21h 21m
10 Jun 2023 @ 15056m 4h 5m
10 Jun 2023 @ 110010m 22m
10 Jun 2023 @ 103810m 22m
10 Jun 2023 @ 10169m 223d 20h 20m
29 Oct 2022 @ 1356 ie14d 2h 21m
15 Oct 2022 @ 1135 ns15m 19m
15 Oct 2022 @ 11163m
15 Oct 2022 @ 1113 ie20d 15h 5m
24 Sep 2022 @ 20085h 15m
24 Sep 2022 @ 145311m 1h 20m
24 Sep 2022 @ 1333 ie45m
24 Sep 2022 @ 124812m 20h 18m
23 Sep 2022 @ 1630 ie3h 10m
23 Sep 2022 @ 1319:2820m 32s
23 Sep 2022 @ 1258:5616m 45s 11m
23 Sep 2022 @ 1247 ie1h 29m
23 Sep 2022 @ 1118 ie24m
23 Sep 2022 @ 10545m
23 Sep 2022 @ 1049 ie4d 22h 45m
18 Sep 2022 @ 1204 ns11d 15h 10m
06 Sep 2022 @ 2054 ie9d 5h 51m
28 Aug 2022 @ 1503 ie7d 7h 16m
21 Aug 2022 @ 0747 ie2d 19h 51m
18 Aug 2022 @ 1155:339m 5s 21m 58s
18 Aug 2022 @ 1133:359m 8s 20m 32s
18 Aug 2022 @ 1113:03 ie~8m 13s 12d 21h 21m
05 Aug 2022 @ 1352 ie8d 21h 26m
27 Jul 2022 @ 16263h 13m
27 Jul 2022 @ 1312:018m 56s 20m 58s
27 Jul 2022 @ 1251:038m 20s 22m
27 Jul 2022 @ 1229 ns9m 6d 48m
21 Jul 2022 @ 1141 ie16h 11m
20 Jul 2022 @ 1930 ie5d 9h 27m
15 Jul 2022 @ 1003 ie2d 23h 3m
12 Jul 2022 @ 1100 ie4d 20h 40m
07 Jul 2022 @ 1420 ie1d 2h 2m
06 Jul 2022 @ 1218 ie5d 22h 32m
30 Jun 2022 @ 1346 ie4d 7h 46m
26 Jun 2022 @ 0600 A17d 20h 51m
08 Jun 2022 @ 0909 ie17h 29m
07 Jun 2022 @ 1540 ie3h 51m
07 Jun 2022 @ 114923h 13m
06 Jun 2022 @ 1236 ie2d 0m
04 Jun 2022 @ 1236 ie3d 23h 45m
31 May 2022 @ 1251 ie1d 3h 1m
30 May 2022 @ 0950 ie6d 20h 52m
23 May 2022 @ 1258 ie4d 22h 0m
18 May 2022 @ 1458 ie1d 6h 9m
17 May 2022 @ 0849 ie11d 20h 59m
05 May 2022 @ 1150 ie8d 17h 16m
26 Apr 2022 @ 183412m 11s 2h 20m
26 Apr 2022 @ 1614 ie2d 7h 44m
24 Apr 2022 @ 0830 ie19h 19m
23 Apr 2022 @ 1311 ie168d 1h 55m
06 Nov 2021 @ 1116 ns1d 21h 21m
04 Nov 2021 @ 1355 ie3d 21h 57m
31 Oct 2021 @ 1558 ie23h 27m
30 Oct 2021 @ 1631 ie1d 5h 1m
29 Oct 2021 @ 1130 ie21m
29 Oct 2021 @ 1109 ie18h 28m
28 Oct 2021 @ 1641 ie20m
28 Oct 2021 @ 1621 ie3d 3h 23m
25 Oct 2021 @ 125823h 35m
24 Oct 2021 @ 1322:308m 41s 20m
24 Oct 2021 @ 1302 ie>6m 30s 6d 20h 23m
17 Oct 2021 @ 1639 ns12d 3h 42m
05 Oct 2021 @ 1256:2916m 42s
05 Oct 2021 @ 1239:4713m 1s 16m 19s
05 Oct 2021 @ 1223:2813m 3s 6m
05 Oct 2021 @ 1217 ie3h 18m
05 Oct 2021 @ 0859 ns2d 22h 18m
02 Oct 2021 @ 1041 ie4d 19h 57m
27 Sep 2021 @ 1444 ie1d 4h 53m
26 Sep 2021 @ 0951 ie2d 15h 20m

Interval Statistics

Interval Count100
Min3m
Max223d 20h 20m
Mean8d 21h 31m
Median1d 3h 27m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
33912 24 Jan 2024 @ 1405 --- JR Low, dogleg full. Water looked dirty. No bubbles.
26670 25 Jun 2023 @ 1456 --- steve No activity the few minutes I watched it.
25057 27 Feb 2023 @ 1528 --- MAB approx time - seen IE from Rubble earlier too - no apparent runoff - Dog Leg full with visible burbles from the vents near ground level - did not stay to watch if DL dropped
21817 07 Jun 2022 @ 1100 --- novakg Pool was filling and very near to full.
21791 06 Jun 2022 @ 1114 --- novakg Filling.
20329 06 Nov 2021 @ 1205 --- MAB just ended - no bubbles but DL still empty
16968 30 Apr 2021 @ 1939 --- MAB Resting water level lower than last visit - Dog Leg too
16299 28 Sep 2020 @ 1424 --- bbev low water level, lime green in color.
14673 18 Jun 2020 @ 1837 --- jkgood Down 3-4 inches, calm
11317 22 May 2019 @ 0703 --- Kyle nearly full but below over flow. steady boiling and bubbles
11328 21 May 2019 @ 0908 --- Kyle low pool, quiet
11331 20 May 2019 @ 0821 --- Kyle low pool, quiet
10352 16 Sep 2018 @ 1109 16 Sep 2018 @ 1111 Siegmund Gas bubbles and good thumps at 1109. Steam flashes at bottom of pool 1111. Water ~3cm below overflow.
9710 13 Aug 2018 @ 1118 --- Kent Pool six inches below overflow and only minor steam
19282 05 Jul 2018 @ 1201 --- research-mab 7-5-2018 CORPORAL BBEV 1201 See Note under Steamboat Porcelain Basin still very active, but appears drier. Congress pool down 4-6" from yesterday, still boiling vigorously. Emerald Springs and Monarch runoff appears to have increased. Monarch geyser crater has clearer water and much fuller. Corperal boiling, runoff wet. Cistern did not look any different, boiling steadily, just at overflow. Emerald Springs is still cloudy but with noticeably less boiling. https://geysertimes.org/note.php?id=9039
8848 22 Jun 2018 @ 1645 22 Jun 2018 @ 1735 MAB Two eruptions in this time frame - Starts are different – more convection and upwelling before it starts as it used to, or if that is the start it is very very different, so I don’t have good start times yet until I figure it out! Water level is low, but it does reach overflow during the eruption, about 10 feet out. Superb growling and grumbling from Dog Leg!
8884 21 Jun 2018 @ 0915 --- Polly Bubbling in the back of the pool.
8562 03 Jun 2018 @ 1520 --- Siegmund Pool down ~15cm, runoff channel dry.
8561 03 Jun 2018 @ 1156 --- Siegmund Pool down ~10cm, but runoff channel wet.
29617 01 Aug 2017 @ 1200 --- research-mab 8/01/2017 - no time noted - Corporal and Veteran’s color now murky
29600 22 Sep 2016 @ 1100 --- research-mab 9/22/2016 Corporal Geyser is very clear today 11am
2595 31 Oct 2015 @ 2058 --- MAB Corporal and Dog Leg water levels are back to predisturbance levels, after going way way up, then followed by very very low for weeks. I did not get a full cycle to check intervals and durations because Vixen was vexing.
29861 17 Sep 2001 @ 1200 --- research-mab 9/17/01 - no times noted - For the last two days Corporal G. has been murky and off-color + Dog Leg G has been very active.
30023 19 Jun 1996 @ 1200 --- research-mab 6/19/1996 - no time noted - Dog Leg is very low but Corporal and Veteran seem about normal.
30154 28 Jun 1994 @ 1200 --- research-mab 6/28/1994 - no time noted - I spent a lot of rove time watching Corporal Geyser and Dog’s Leg. They have seemed to switch roles and now Corporal is erupting and Dog’s Leg is not. Corporal has low boils or eruptions lasting between 10-13 min with intervals between eruptions about 10-12 min. When Corporal starts bubbling Dog’s Leg drains and when Corporal stops, Dog’s Leg quickly fills. I took temp readings and Corporals fluxuates between a low of 69.6° to a high of 79.4°! Low occurred when two (of the seemingly three) vents were going and high occurred during time when all three vents were boiling, about two min. from end of eruption. Dogs’ Leg temp ranged from 71.5°C to about 73.4°C. Remember these are estimates I only watched it for a few separate accounts today! But I’m hooked so more soon
30296 06 Sep 1993 @ 1515 --- research-mab 9/6/1993 Also the small vents with yellow sulfur near Veteran/Corporal has changed. This AM the vents were empty as they have been since the disturbance. This afternoon around 3:15 the two vents had hot water to the rim of the vents.
30279 24 Aug 1993 @ 1200 --- research-mab 8/24/1993 - no times noted - Other signs of disturbance (albeit mild} - Corporal 162°F water level down, water yellowish, dark deposit on sides of pool - bubbling overflowing.- Dog Leg – 160°F, dry around vent no overflow
30265 22 Aug 1993 @ 1200 --- research-mab 8-22/1993 - no time noted - Corporal geyser is muddy + water is overflowing into the runoff channel.
30464 07 Sep 1992 @ 1624 --- research-mab 9/7/92 1624 Corporal bubbling -- Dog Leg draining – was ~ ½ full when arrived w/in 1 min was drained completely
30518 09 Jun 1991 @ 1200 --- research-mab 6/9/1991 - no time noted - Corporal’s overflow was wet. Dog Leg almost full.
30503 16 May 1991 @ 1200 --- research-mab 5/16/1991 - no time noted - Corporal – temp 159 pH 5 Clear green.
30641 05 Jul 1990 @ 1439 --- research-mab 7/5/1990 Corporal erupting in gentle overflow at 1439 – Dog’s Leg drained. Veteran Sputtering.
30638 29 Jun 1990 @ 1420 --- research-mab 6/29/90 - at 1420 as I walked thru Back Basin Dog’s Leg was drained. Corporal had overflowed. Minute Geyser was not erupting. Veteran was making a lot of noise but not erupting.
30722 28 Jul 1989 @ 1200 --- research-mab 7/28/1989 - no time noted - Corporal Geyser 176ºF slight overflow, bubbling, water is clear - Dog’s Leg – drained, water level visible ~ 1½ ft down
30711 09 Jul 1989 @ 1200 --- research-mab 7/9/1989 - no time noted - Corporal Geyser overflowing. Dog’s Leg drained
30694 16 Jun 1989 @ 1300 --- research-mab June 16 1989 - Dog’s Leg was drained at about 1300 hr and Corporal Geyser was beginning to overflow.
7593 05 Feb 1989 @ 0000 05 Feb 1989 @ 2359 JSJ Corporal Geyser full, clear, overflowing.
30891 24 Aug 1987 @ 1200 --- research-mab 8/24/1987 - no time noted - Corporal Geyser is a greenish milky color. It is bubbling on the north side (side away from dog’s leg)
30885 17 Aug 1987 @ 1200 --- research-mab 8/17/1987 - no time noted - Dog’s Leg ph 4, T 166ºF * This geyser erupts to about 6”-12” periodically Corporal ph4, T 157ºF
30880 04 Aug 1987 @ 1200 --- research-mab Aug 4 (1987) - no time noted - Dog Leg & Corporal Geyser are quiet.
30869 28 Jul 1987 @ 1200 --- research-mab 7-28-1987 - no time noted - Dog’s Leg is spouting perpetually to 3 ft and overflowing into Corporal Geyser.
33456 15 Mar 1987 @ 1200 --- research-mab March 15, 1987 - no time noted - Corporal Geyser and Private (or Dog’s Leg) Geyser– The mystery geyser was in a calm boil around 6-9 inches high. Corporal is impossible to [tell] if it is in or not in eruption because of the overflow into its crater. Corporal may not even be active!
30939 03 Jul 1985 @ 1200 --- research-mab July 3 1985 – no time noted - Dog Leg 197ºF boiling continuously & overflowing into Corporal Corporal Geyser – 146ºF also overflowing loaded with rocks near the vent and also some along the rim. Removed as many as possible – still many large rocks near the vent. - Trail is wet along & below Corporal runoff
30971 29 May 1984 @ 1200 --- research-mab Tuesday May 29, 1984 - no time noted - Corporal and Dog’s Leg are perfectly clear and calm today.
7600 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Corporal Geyser is now serving only as a receptacle for the Dog’s Leg.
31114 26 Jun 1983 @ 1200 --- research-mab June 26, - no time noted - Corporal geyser has noticeable run off! Eruption?
31074 20 May 1983 @ 1200 --- research-mab May 20 1983 - no time noted - Disturbance!... Dog’s Leg- Little change. Splashing several inches and overflowing into Corporal. Corporal itself is clear and quiet.
31063 12 May 1983 @ 1200 --- research-mab (May 12 83) - no time noted - Dog’s Leg – Continuously overflowing into Corporal. Dog’s Leg’s vent is coated with sulfur, and at the point where Dog’s Leg’s water entered Corporal’s crater, there is a yellow patch of sulfur also.
31038 08 Jan 1983 @ 1200 --- research-mab January 8 1983 - no time noted - Temps from Backbasinland… Corporal Geyser 134º clear green Dog’s Leg sulphur lined & bubbling 188º overflowing into Corporal
31362 31 Jul 1982 @ 1200 --- research-mab 7/31/1982 - no time noted - Dog’s Leg 176° clear calm H2O Corporal 176° dark green slightly turbid H2O, calm
31325 10 Jul 1982 @ 1515 --- research-mab 7/10/1982 Dog Leg Spring: boiling @ 1515 - Corporal: boiling @ 1515, splashing 4-6” no overflow
31311 08 Jul 1982 @ 1200 --- research-mab 7/8/1982 - “About 1200” - Corporal - down with no overflow but channel still has running water Dog Leg Spring – full to 2 inches below sinter platform, boiling Wet area for Dog Leg along edge of Corporal onto trail. Dog Leg major? → New hot spot on trail directly across from Corporal. Ground is also wet there.
31242 20 Feb 1982 @ 1200 --- research-mab February 20 1982 - no time noted - Corporal Geyser 142º green algae lined. Receiving Dog’s Leg’s runoff & causing it to overflow slightly. I don’t think that it is erupting anymore.= Dog’s Leg 188º Yellow sulfur around vent & in runoff with filamentous bacteria waving in the H20. (A week later, it was boiling vigorously along the vent.)
31185 14 Jan 1982 @ 1200 --- research-mab January 14th 1982 - no time noted - Corporal Geyser – 138º calm, still overflowing periodically. Dog’s Leg now has its own 4’ pool. A new vent has been formed & the water level is up~4”. There is constant overflow into Corporal but it still seems to be erupting. Occasional gentle boil & pool) has a sulphur lining. 184º
31572 15 Nov 1981 @ 1200 --- research-mab Nov 15 1981 – no time noted – {post-quake check} Corporal 164° between eruptions, dark green clear H2O = Dog’s Leg 174° between eruptions
31493 09 Aug 1981 @ 1200 --- research-mab Sunday August 9, 1981 - no time noted - Corporal & Dog’s Leg are back to behaving normally again with Dog’s Leg draining as Corporal’s water level rises. After Corporal’s overflow & subsequent lowering of water Dog’s Leg is filling back up again.
31483 05 Aug 1981 @ 1735 --- research-mab August 5, 1981 - inferred time - During Dog’s Leg’s eruption Corporal drained, after the eruption started to bubble and slowly fill.
31480 05 Aug 1981 @ 1200 --- research-mab August 5, 1981 - no time noted - Corporal Geyser dark brown turbid water w/small bubbling 164º
31436 02 Aug 1981 @ 1200 --- research-mab Sunday August 2 1981 The Basin Wide Disturbance has occurred! - no time noted - Dog’s Leg – when full 168º - Corporal During eruption 164º slightly turbid water
31409 06 Jun 1981 @ 1200 --- research-mab Saturday June 6 1981 - no time noted - Corporal Geyser – clear gray-blue water, while in a thumping eruption 178ºF.- Dog’s Leg Spring- during refill 179ºF.
31817 30 Sep 1980 @ 1200 --- research-mab 9/30/80 - no time noted - Corporal had been overflowing now boiling gently & 2” below O
31784 20 Sep 1980 @ 1200 --- research-mab Saturday September 20 1980 - no time noted - Corporal Geyser – slightly murky 161ºF before eruption 172 at vent during eruption Dog’s Leg – filled 2/3 and bubbling 163º, following drain, then fill up 170ºF
31692 16 Aug 1980 @ 1200 --- research-mab Sat Aug 16 - no time noted - Corporal Geyser- Slightly murky, not in eruption. Temp. 170°F = Dogs Leg – Full of clear water – 176°F
31668 17 Jul 1980 @ 1200 --- research-mab July 17, 1980 - no time noted - Corporal Geyser 170°F not ie, 179°F while ie = Dogs Leg – 176°F when full pool, 181°F while refilling following a Corporal eruption
31649 12 Jun 1980 @ 1200 --- research-mab June 12th 1980 - no time noted - Corporal Geyser blew off steam for 4 minutes, followed by a 26 minute wait until heavy boiling again resurfaced. Dog Leg is real noisy gurgling empty when Corporal reaches its peak.
31634 09 Jun 1980 @ 1200 --- research-mab June 9 1980 - no times - observations made over the week and entered on 9th - Corporal Geyser – 164ºF before eruption, 181ºF during eruption = Dog’s Leg Spring 179ºF before and after drain during Corporal’s eruption
31958 20 Sep 1979 @ 1800 --- research-mab Thursday Sept 20 1979 - Disturbance check after 1730 - Corporal Geyser and The Dog’s Leg – The trail south of these two features was found to be very wet. Foot prints covering water flowing makes point towards the possibility of a major eruption last night. Dogs Leg (170ºF) bubbling hard before Corporal eruption. As Corporal erupts, Dogs Leg drained with loud gurgling. Corporal temp ie 176ºF. It seemed to me that the odor of H2S was stronger in the basin this evening.
31886 29 Jul 1979 @ 1200 --- research-mab July 29 1979 - no time noted - Dog’s Leg – 182ºF, ph 4.3, Corporal before eruption 164ºF, ph 4.3
31863 05 Jul 1979 @ 1200 --- research-mab July 5 1979 - no time noted - Corporal Geyser 167ºF as it was starting an “eruption” = Dog Leg 177ºF
32216 15 Sep 1978 @ 1200 --- research-mab 09/15/1978 - no time noted - ...basin wide disturbances continue! - Corporal Geyser – 163º when not ie = Dog’s Leg – 167º filled with water
32174 24 Aug 1978 @ 0000 --- research-mab 08/24/1978 When Corporal boils it sounds like a heart beat. Who knows what is at the bottom of it?
32086 15 Apr 1978 @ 1200 --- research-mab 04/15/1978 - no time noted - Corporal 166° quiet, 200° eruption
32056 25 Mar 1978 @ 1200 --- research-mab March 25 1978 - no time noted - Corporal & Dog’s Leg – Doin the same old thing
32544 07 Sep 1976 @ 1200 --- research-mab 09/07/1976 - no time noted - Corporal – 175° → 200° was 178° before eruption, progressed to 200° at the height of the eruption
32418 14 Jul 1976 @ 1721 --- research-mab July 14 1976 - inferred time no time noted 2nd entry - Corporal Geyser - - has an eruptive cycle of approximately 20 minutes and 34 seconds. I began my observation of Corporal just as the pool filled and overflow began. The eruption ceased soon afterwards and I began timing. The pool drained approximately 4-5 inches. Once the pool has drained to the level of white sinter deposit the pool gradually begins to refill. Slow at first, then increasing in frequency and intensity bubbles begin to appear at the surface of the pool. As the feature approaches the end of its eruptive cycle - - bubbling becomes quite vigorous. Steam bubbles can be heard hitting cap rock in the vent before they surface. The largest eruptive display reaches a whopping 6-8”. Spectacular!!!
32417 14 Jul 1976 @ 1720 --- research-mab July 14 1976 - no time noted - Thump in Back Basin. At approximately 5:20 pm I was standing by Corporal Geyser - - Two visitors who had stopped to watch Corporal and the continued on towards Vixen. About 5:30 pm we continued our discussion of Basin activity after an eruption of Veteran (c. 5:28 pm) At that time he inquired as to whether or not there was a relationship between the thump he had heard “& felt and the activity at Veteran. Inquiring further we (three) agreed that we had felt and heard a large thump. - - The man and his wife being stationed at Vixen and I at Corporal. Approximate time we agreed on was 5:20.
5548 10 Jul 1976 @ 1800 --- research-mab 07/10/1976 Corporal Geyser - - feature appears to be more active than normal. The wash from the feature extended beyond normal runoff channel and was evident on the trail between Veteran and the “T” in the trail by bridge at Tantalus.
32338 17 May 1976 @ 1200 --- research-mab May 17 1976 - no times noted - saw the following geysers in action:African (continuous), Constant, Big whirligig, Valentine, Dark Cavern, Vixen, Corporal, (Fan?)
32696 29 Sep 1975 @ 1200 --- research-mab 09/29/1975 - no time noted - Corporal still overflowing periodically.
5700 27 Sep 1975 @ 1800 --- research-mab 09/27/1975 Corporal: the usual overflow activity (periodic with draining level of pool down ~ 6”) which has not been apparent in the last two weeks, was noticed happening today. Timed sequence: 22 min interval between one drain period and another – 15 ½ min after it started to drain, it started to fill, overflow lasted ~ 1 min, draining : ~1 min, filling about 5 min.
5696 01 Sep 1975 @ 1150 --- research-mab 09/01/1975 Corporal filled at 1150- intense boiling. No reaction in either Veteran or Rubble.
5697 01 Sep 1975 @ 1032 --- research-mab 09/01/1975 Corporal was checked during eruption of Rubble. No significant change in Corporal.
32679 27 Aug 1975 @ 1200 --- research-mab 08/27/1975 - no time noted - Corporal geyser bubbling away but not erupting, generating no runoff.
32669 24 Aug 1975 @ 1200 --- research-mab 08/24/1975 - no times noted - Corporal has been bubbling strongly every time I’ve past it in the last 3 days. (Ditto SSL)
5611 05 Aug 1975 @ 1800 --- research-mab 08/05/1975 Corporal behaving strangely. Was bubbling away when pool was quite low, evidence indicated no recent eruption.
32633 15 Jul 1975 @ 1200 --- research-mab Thurs July 15 1975- no time noted - Corporal geyser – water slowly clearing, “eruptions” continuing much as before quake.
32623 07 Jul 1975 @ 1200 --- research-mab 7/7/1975 - no time noted - Corporal – clearing, same activity as before quake
32803 08 Sep 1973 @ 1600 08 Sep 1973 @ 1605 research-mab 09/08/1973 - Corporal 180º filling and with heavy bubbling 4:00pm - Corporal 170º water level dropped no heavy bubbling 4:05pm
5998 12 May 1973 @ 1800 --- research-mab 05/12/1973 Each eruption of Veteran was followed by bubbling and runoff of Corporal. Dog’s Leg water level dropped a ft. as Corporal filled & overflowed – then filled up as overflow of Corporal ceased.
32932 28 Sep 1972 @ 1200 --- research-mab 09/28/1972 - no time noted - Watched another exciting eruption of Corporal. I’ll only add that while pool is draining, the “Dogleg” makes a gurgling sound.
6468 23 Sep 1972 @ 1800 --- research-mab 09/23/1972 For several days I’ve noticed that Corporal Geyser was having greater than usual run-off at times, however every time I went by Corporal it would be 3”-4” below the edge. Today I witnessed the “eruption”. The pool started to fill and bubble until it rose to overflowing. The bubbling action was relatively gentle. Approx 20 gal of water ran down the run-off channel, the bubbling stopped, and the level dropped. A dull thumping was apparent during the bubbling activity. {no specific time}
32926 07 Sep 1972 @ 1200 --- research-mab 09/07/1972 - no time noted - ...many of the features in the Back Basin (ie Mud, Mystic, Yellow Funnel and Dishwater springs, corporal geyser & Dog Leg) are still low, turbulent and muddy.
6422 25 Aug 1972 @ 1800 --- research-mab 08/25/1972 Corporal Geyser – the heat has shifted to here – apparently from “The Dog’s Leg.” There is bubbling in pool of Corporal, the water in it is turbid, & there is now no runoff from The Dog’s Leg. In addition, The Dog’s Leg has lost most of its Sulphur deposit.
33207 16 May 1972 @ 1201 --- research-mab Corporal Geyser 1972 – May 16 - no time - 153F “Dog Leg” 188F Bubbling action from the Dog Leg, no action in the main spring. Most of the water coming up from the Dog Leg is going back down in the main spring, very little over flow.
32887 16 May 1972 @ 1200 --- research-mab 05/16/1972 - no time noted - Corporal Geyser – Pool= 153º Spring 188 much sulfur coming out of spring and being deposited {dog leg}
32968 02 Oct 1971 @ 1200 --- research-mab 10/02/1971 - no time noted - Corporal Geyser – water down 2 ½ inches
32953 12 Sep 1971 @ 1500 --- research-mab 09/12/1971- {afternoon temps 2-4pm} - Corporal 147° receives more H2O from Dog’s Leg than it gives
32981 28 Aug 1969 @ 1100 --- research-mab August 28 1969 Thursday -{approx time} - Don White and I were in Back Basin taking thermal readings – 9 to noon. Green Dragon – 4 feet – 206.5 F Phillips Cauldron – 5 feet – 203.5 F Yellow Funnel – 8½ ft. - 202.0 F Pearl – 4 ft – 83 to 92 C Corporal – 4 ft – 91 C Cistern – 26 ft – 216.2 F Echinus – 10 ft. - 102.5 C
33213 17 Aug 1969 @ 1200 --- research-mab Aug 17 1969 - no time - 172° F No activity from the “dog leg” crater to the east last or this year
33212 07 Jun 1968 @ 1200 --- research-mab (1968) June 7th - no time - water overflowing about once per day
EntrySourceLinkComment
18 May 2021 @ 1815 ell-e https://imgur.com/QscOoxd A still image showing the water boiling from below.
21 May 2015 @ 1130 JSJ https://www.youtube.com/watch?v=ZTbLqppomoI Video compilation of Corporal Geyser's eruptions in the latest morning & earliest afternoon of 21 May 2015.
Baseline does not exist.