| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 38544 |
19 Apr 2025 @ 1815 |
--- |
MAB |
light steam with no water visible and nothing audible from bookstore |
| 38267 |
23 Feb 2025 @ 1400 |
--- |
K.Cooper |
lightly steaming |
| 37703 |
24 Oct 2024 @ 1136 |
--- |
SantaFe108 |
Water level out of sight, occasional splash or boiling noise. |
| 37673 |
22 Oct 2024 @ 0832 |
--- |
MAB |
sporadic audible bloops - not very strong |
| 37345 |
03 Oct 2024 @ 1005 |
--- |
SantaFe108 |
Splashing out of sight. |
| 35799 |
09 Jul 2024 @ 0753 |
--- |
bbev |
Audible splashing, steaming. First splashing I have noticed hearing this year other than after a rainstorm. |
| 35718 |
04 Jul 2024 @ 1730 |
--- |
cb |
From the bookstore buckrail fence, I can hear bubbling (sounds like a water logged mud pot) with wispy steam |
| 35060 |
10 Jun 2024 @ 0845 |
--- |
SantaFe108 |
Water level just within sight, calm. |
| 28887 |
19 Oct 2023 @ 1742 |
--- |
ypcaribou |
Steaming with audible blurping and splashing in vent |
| 28292 |
17 Sep 2023 @ 0826 |
--- |
SantaFe108 |
Audibly splashing out-of-sight. |
| 27308 |
28 Jul 2023 @ 2117 |
--- |
SantaFe108 |
Water level out of sight and audibly splashing. |
| 26429 |
17 Jun 2023 @ 1543 |
--- |
JSJ |
Gently steaming. No visible water. |
| 25457 |
15 May 2023 @ 1804 |
--- |
ypcaribou |
Empty as far as can be seen from railing by bookstore. Quietly steaming. |
| 24565 |
30 Oct 2022 @ 1352 |
--- |
ypcaribou |
Gently steaming & quiet |
| 24519 |
29 Oct 2022 @ 1855 |
--- |
MAB |
nothing heard walking by last night or tonight |
| 24392 |
15 Oct 2022 @ 2005 |
--- |
MAB |
Approx time - sloshy gurgly splashy noises heard walking by |
| 23947 |
20 Sep 2022 @ 1517 |
--- |
ypcaribou |
No water visible but gurgling & splashing audible. |
| 22965 |
01 Aug 2022 @ 1200 |
--- |
cb |
This past week I've noticed SVS is noisy, gurgling. Today it is a bit more noisy! Sounds like more blooping mud pot sounds with gurgling and steam on a HOT afternoon! 🤔 |
| 22394 |
08 Jul 2022 @ 0858 |
--- |
bbev |
Audible bubbling, which I have only heard just after heavy rainfall. Water is just visible standing on top rail of buck rail fence. |
| 21671 |
02 Jun 2022 @ 1622 |
--- |
bbev |
Water level has dropped and is no longer visible from the store. Still steamy and quiet. |
| 21645 |
01 Jun 2022 @ 1611 |
--- |
bbev |
Pool has dropped over a foot since yesterday. Water is still visible from store, steaming and clear, with occasional bubble over the vent. |
| 21616 |
31 May 2022 @ 0901 |
--- |
bbev |
Noticed that Steamvalve is very high and steaming. Pool is clearly visible and ~18" from where it would be overflowing. Do not see any bubbles on surface. Unsure if it has filled from recent precipitation or not. First day l have been here to observe. |
| 16953 |
28 Apr 2021 @ 0922 |
--- |
MAB |
from bookstore ~ quiet- no visible water - no steam |
| 14607 |
12 Jun 2020 @ 0750 |
--- |
bbev |
sound of water in vent. |
| 14614 |
12 Jun 2020 @ 0600 |
--- |
ypcaribou |
Audible splashing heard in vent but not seen. Walls of crater wet. Similar observation at 0920. |
| 14512 |
03 Jun 2020 @ 0605 |
--- |
ypcaribou |
Observed at 0610 & 1200: Wet in crater with audible splashing heard. No splashing observable from Bookstore fence. |
| 13393 |
25 Aug 2019 @ 0612 |
--- |
ypcaribou |
Empty |
| 13281 |
16 Aug 2019 @ 0934 |
--- |
bbev |
Seeing and hearing water, again after heavy rain/hail storm the night before. |
| 13121 |
09 Aug 2019 @ 0835 |
--- |
bbev |
Gurgling and sounds of water. Can see water in crater standing on top rail of barricades. First water I have seen all summer. |
| 12854 |
28 Jul 2019 @ 1040 |
--- |
ypcaribou |
Completely empty crater as seen standing on bottom rung of fence rail by bookstore. |
| 11233 |
02 May 2019 @ 0934 |
--- |
Polly |
Can hear Steamvalve Spring bubbling. |
| 11012 |
20 Apr 2019 @ 0914 |
--- |
MAB |
no water visible from bookstore- splashing & thuds heard |
| 9942 |
30 Aug 2018 @ 0733 |
--- |
cb |
bubbling and steamy way below eye level. |
| 9939 |
29 Aug 2018 @ 1212 |
29 Aug 2018 @ 1830 |
bbev |
Much less activity than yesterday. No water seen during this period, only steam and sound of rumbling/boiling from deep in crater. |
| 9919 |
28 Aug 2018 @ 1339 |
28 Aug 2018 @ 1758 |
bbev |
Rumbling and steamy from deep in crater. Wall of crater is wet half way to top. Sounds of splashing heard nearly continually during this period and "eruptions" where noted when splashing continued and was seen within or over top of the crater. Store was not too busy so I was able to keep fairly constant eye on it. |
| 9103 |
10 Jul 2018 @ 0919 |
--- |
udo |
Gurgling intermittently. |
| 8954 |
30 Jun 2018 @ 0837 |
--- |
bbev |
Pool has not filled in past 3 days I have been at bookstore. No visible water or mud seen in that time. Continuous sound of bubbling/boiling coming from deep in crater. Has not been a continuous watch throughout the days. |
| 8853 |
23 Jun 2018 @ 1500 |
23 Jun 2018 @ 1520 |
Tara |
Water level down but still visible from bookstore. Constant boiling and blurping with occasional small bursts to ~6-8 inches. |
| 8815 |
19 Jun 2018 @ 1523 |
--- |
bbev |
increased boiling, pool has turned muddy. |
| 8814 |
19 Jun 2018 @ 1312 |
--- |
bbev |
1' from top of crater, clear water. Some bubbling in left (east), center of pool. |
| 8779 |
19 Jun 2018 @ 0725 |
--- |
cb |
Steamvalve Spring water is high and fairly clear. |
| 8759 |
18 Jun 2018 @ 0745 |
18 Jun 2018 @ 1340 |
JSJ |
Watched Steamvalve Spring for 6 hours, with brief side excursions to Back & Porcelain Basins. No eruptions. Water level very slowly rising until late morning. Water level ~stable in late morning and early afternoon. Noticed light bubbling in one area of pool in the early afternoon. |
| 8565 |
03 Jun 2018 @ 2113 |
--- |
Siegmund |
Audible splashing at depth, but no water visible at the surface. |
| 8078 |
05 May 2018 @ 1100 |
--- |
sfavor |
pool in woods by library (bathtub?) drained and erupting muddy water |
| 29806 |
08 Aug 2006 @ 1200 |
--- |
research-mab |
8/8/2006 - no time noted - Heasler checked Steamvalve and there are no harmful gases. The dieing [sic] vegetation is causing the smell. H2O temp is 92°C, 200°F |
| 29805 |
07 Aug 2006 @ 1200 |
--- |
research-mab |
8/7/2006 - no time noted - Steam Valve Geyser 2 small eruptions about 3’ high |
| 30010 |
25 Sep 1997 @ 1200 |
--- |
research-mab |
9/25/1997 - no time noted - I noticed some changes... Steam Valve is producing a clear pool first time I have seen it like that. |
| 30009 |
24 Sep 1997 @ 1200 |
--- |
research-mab |
9/24/1997 - no time noted - Steamvalve’s pool has cleared |
| 30007 |
16 Sep 1997 @ 1200 |
--- |
research-mab |
9/16/1997 - no time noted - Steam Valve last erupted on 9//9. On 9-12-97 at 0830 hrs JJackson had noticed that Steamvalve had returned to a pool. This am I checked it and it remains inactive and has developed a very interesting circular ring of sulfur around the outside of the pool. Probably from the rain washing off the mud. |
| 30006 |
12 Sep 1997 @ 1200 |
--- |
research-mab |
9/12/1997 - no time noted - JJ {from YA} reports that Steamvalve now has a pool of water (just as of this a.m.!) It did not have a pool for most of the summer |
| 30288 |
26 Aug 1993 @ 1200 |
--- |
research-mab |
8/26/1993 - no time noted - Steamvalve 132° clear, calm, bluish in vent slight overflow |
| 30578 |
04 Aug 1991 @ 1200 |
--- |
research-mab |
8/4/91 - no time noted - Steamvalve Geyser shows no eruptive activity |
| 30540 |
29 Jun 1991 @ 1200 |
--- |
research-mab |
6/29/91 - no time noted - Still no activity from Steamvalve Geyser, just boiling. |
| 4702 |
09 Jul 1990 @ 1200 |
--- |
research-mab |
7/9/1990 - no time noted - Steamvalve Geyser has been remarkable this summer for its lack of activity. |
| 30702 |
09 Jul 1989 @ 1200 |
--- |
research-mab |
7/9/1989 - no time noted - Steamvalve no overflow. Water is steaming, no bubbling, water fairly clear. |
| 4693 |
21 Jun 1988 @ 1800 |
--- |
research-mab |
6/21/1988 - no times noted - Steamvalve is erupting ~ 4 hr intervals to approx 2 meters high. Muddy water overflowing to trail by Emerald Spring. |
| 30798 |
16 Jun 1988 @ 1405 |
--- |
research-mab |
6/16/1988 Steamvalve erupted from approx 1:40 pm until 1:44 pm - Max height of bursts 6-8 ft; initial bursts splashed visitors at fence.
Steamvalve threw out approximately one dozen rocks early in its eruption.
Water drained to about 1 ft below the runoff channel following the eruption.
At 2:05: pH-5 water temp 170ºC [sic].
Water thrown up during the eruption appeared to have the consistency of fairly liquid mud/clay mixture. Erupted material was in the form of both “spouting” and the “blurping” noise commonly associated with mudpots |
| 30878 |
04 Aug 1987 @ 1200 |
--- |
research-mab |
Aug 4 (1987) - no time noted - Steamvalve hasn’t been erupting since the early disturbance time. No activity last 2 wk at least. |
| 4687 |
14 Jul 1987 @ 1800 |
--- |
research-mab |
7/14/1987 Steamvalve Geyser having strong eruptions 2-3x / day (10-12ft) |
| 30912 |
23 Aug 1986 @ 1200 |
--- |
research-mab |
8-23-86 - no time noted - Haven’t seen any Steamvalve activity lately. |
| 4853 |
19 Aug 1985 @ 1800 |
--- |
research-mab |
8/19/1985 - no times noted - Interesting Notes: Steamvalve seems to erupt when the pool level is near the top of a small rock near the big triangle size rock on the opposite side of the overflow side. |
| 5142 |
19 Aug 1985 @ 1800 |
--- |
research-mab |
8/19/1985 Interesting Notes: Steamvalve seems to erupt when the pool level is near the top of a small rock near the big triangle size rock on the opposite side of the overflow side. |
| 5183 |
19 Aug 1985 @ 1800 |
--- |
research-mab |
8/19/1985 - no times noted - Summary of Steamvalve Geyser: It seems to erupt every 3 ½ to 4 hours (being the interval). The eruption is preceded by bubbling in the pool. The eruption is very much like a small Equinus [sic] but with mucky water. The height of it goes up to 10-12 feet or so, with the eruption going for 5 or 6 minutes. It takes about 2 minutes to overflow and after the eruption there is a rapid drain of 2/3 of the pool, which takes about 1 ½ minutes. Then the drain is very, very slow if at all. It is very much like a small Equinus. [sic] |
| 30933 |
03 Jul 1985 @ 1200 |
--- |
research-mab |
July 3 1985 – no time noted - Steamvalve 162ºF with pool ½ filled, water is mud colored, geyser regularly erupts with a thumping sound. Interval is ~ 4 hours. Overflows. Water reaches 10 ft high. |
| 4680 |
19 Oct 1984 @ 1200 |
--- |
research-mab |
10/19/1984 - no time noted - Steamvalve Spring has recently erupted as per runoff channel through melted snow. Lee Whittlesey |
| 31001 |
18 Jul 1984 @ 1200 |
--- |
research-mab |
7/18/1984 Thermal Observations - no time noted - Steam Valve – 4 hour 17 minute intervals |
| 7611 |
11 Feb 1984 @ 1800 |
--- |
research-mab |
02/11/1984 - no time noted - Steamvalve Geyser – Active; apparently only 3-4 times each 24 hrs. |
| 31122 |
11 Jul 1983 @ 1200 |
--- |
research-mab |
Monday July 11 - no time noted - Also Steamvalve’s runoff diverted back into drain, it was running off into Emerald Spring & muddying the water. |
| 33721 |
01 Mar 1982 @ 1200 |
--- |
research-mab |
no time - inferred approx date - Hutchinson “Spring Guide to Yellowstone’s Geyser and other thermal features” Revised 3/82 - Recognized as the hottest and most unstable of Yellowstone’s geyser basins, Norris is also one of the most colorful. It is the site of frequent and sometimes violent changes. An old geyser vent near the Norris Museum restrooms re-emerged in February 1981 after almost 35 years of burial. It is now having muddy eruptions several times daily. |
| 31249 |
20 Feb 1982 @ 1200 |
--- |
research-mab |
February 20 1982 - no time noted - Steam Valve Spring 158° bubbling gently with brown turbid H2O |
| 31219 |
15 Jan 1982 @ 1200 |
--- |
research-mab |
January 15th, 1982 - no time noted - Steamvalve Spring 166º between eruptions, overflow has again found its way down into Emerald Spring. |
| 31191 |
14 Jan 1982 @ 1200 |
--- |
research-mab |
January 14th 1982 - no time noted - Steam Valve Spring 166º between eruptions, calm & muddy as usual. Still overflowing with eruption |
| 31606 |
11 Dec 1981 @ 1200 |
--- |
research-mab |
Dec 11 1981 - no time noted - Steam Valve Spring 150º between eruptions. It is still overflowing but the nifty little culvert that was installed last Spring to divert the water from the side walk diversion that put the runoff into Emerald, is not working anymore. |
| 31579 |
15 Nov 1981 @ 1645 |
--- |
research-mab |
Nov 15 1981 Steamvalve is overflowing (w/eruptions) & active but by the time I got there to take a temp it was too dark to read the thermometer & I think it was just 4:45!! |
| 31402 |
05 Jun 1981 @ 1800 |
--- |
research-mab |
Friday June 5 1981 [1800 is generic end of day time] - Steamvalve Springs – while partially drained, water down 20 inches 153ºF |
| 4622 |
02 Jun 1981 @ 0000 |
--- |
research-mab |
6/2/1981 Steamvalve Spring – Periodically erupts 2 to 6 feet high with opaque gray white water. Debut of Steamvalve occurred on February 25. Mud was sprayed all over restroom and to the tops of nearby lodgepoles.[NOTE RAH Field Notes appears to state breakout Feb 2-3, see Feb 3 @0000 Note - no further clarification has been found to date] |
| 33720 |
03 Feb 1981 @ 0000 |
--- |
research-mab |
[RAH field notes 6-30-81] Norris Geyser Basin Measurements Steamvalve Spring: 19 m from restroom. - Dimentions: ~N-S: 4.6m, EW 4.9m -
Max heigh 3m - emerged 2-3 Monday 2/81 [NOTE - Logbook source states Feb 25 as the breakout. See June 2 Note] |
| 33722 |
12 Apr 1973 @ 1200 |
--- |
research-mab |
04/12/1973 no time noted - Steamvalve Spring Not Found
[09/09/1966 logbook re road removal: Closing Museum for the season. Old parking pavement is gone. Road south of Museum is gone or torn up, half of pavement down to old Junction has been macerated for removal] [Hutchinson 1973 Inventory Steamvalve entry: There has been no new activity from the buried feature to date. When the road by-pass and new parking lot was constructed in 1967, the old pavement over Steamvalve’s vent was removed and the surface graded. No effort was made to locate and uncover the vent so only an area of warm ground is present to mark its former location. It is especially visible from rising vapors immediately after a rain or with melting snow. There seems to be no doubt that it will eventually break out again, the only question is when.] |
| 33725 |
01 Jun 1947 @ 1200 |
--- |
research-mab |
no time No Date - approx start of 1947 season: By the summer of 1947, Steamvalve having blown its way to freedom seemed again content to lie almost inactive. Light steaming from the bottom of the 4 foot crater, however, should be sufficient warning for mere man not to endeavor to close one of nature’s safety valves again. [Verde Watson 1954 working papers] |
| 33719 |
31 Aug 1946 @ 1200 |
--- |
research-mab |
no time noted - No date - end of month report - New Mud Pool (“Geyser” in Parking Area) Water receded August 1st. Dry for balance of month. |
| 33518 |
01 Jul 1946 @ 1200 |
--- |
research-mab |
- no times noted - New Mud Pool (“Geyser” in Parking Area) See report to Nature Notes.
Depth 3 feet on July 1st, water level falling 1 inch per day.
July 11. new rail completed,
July 12, Temperature 88.5 C
July 13 Temperature 87.5 C Temperature (7:00 p.m.) 84C,
July 14 Depth of water 1 foot Temperature 87.5 Mud thickening,
July 15 Crater dry. Steam escaping.
July 23 Remained dry until afternoon of this date. Crater 1/3 full after heavy rain.
Boiling July 25, Water level falling 2 inches per day.
July 27 Crater dry, steaming |
| 33718 |
25 Jun 1946 @ 0800 |
25 Jun 1946 @ 1900 |
research-mab |
[see note June 24] The water was still standing high in the caldron. But by 8:00 o’clock that morning the caldron was completely dry, exposing a 45° funnel-like crater six feet deep, lined with gray sticky clay. The orifice at the bottom of the crater is about ten inches in diameter, but clogged by coarse gravel. By 9:00 a.m. of the same day, water had returned to the crater and risen to a depth of two feet. This was accompanied by violent boiling activity three feet high. At 9:05 a.m. the boiling subsided, only to be followed at 9:10 a.m. by violent activity. By 9:00 a.m. of the same day, water had returned to the crater and risen to a depth of two feet. This was accompanied by violent boiling activity three feet high. At 9:05 a.m. the boiling subsided, only to be followed at 9:10 a.m. by violent activity. While the activity continued, the water level began to fall, leaving the crater dry at 9:20 a.m.
Escape of steam and deep rumbling of of boiling action could be heard from the orifice until 10:30 a.m. when the water reappeared. Two feet of water stood in the caldron with violent boiling (splattering 3 to 4 feet high) until 10:40 a.m. when boiling ceased. The pool quietly disappeared at 10:50 a.m. At 11:50 two inches of water came up through the gravel-clogged vent and remained at that level until 1:00 p.m. when it rose to a three-foot depth. Boiling activity, 8 inches high, continued until 7:00 p.m. when once more the surface became very placid.
[Yellowstone Nature Notes 1946 Vol 20 #6] |
| 33717 |
24 Jun 1946 @ 0800 |
24 Jun 1946 @ 1700 |
research-mab |
[See Note May 22 1946] - approx end time - The water level remained the same, with boiling action, up to eight inches in height, until June 24. On this morning at 8:00 a.m. the water level rose to within one inch of overflowing the lower rim (west). The pool was observed closely during the day in anticipation of seeing a pronounced overflow. By the end of the day no overflow had occurred, so an early morning check was made on June 25.
[Yellowstone Nature Notes 1946 Vol 20 #6] |
| 33716 |
22 May 1946 @ 0933 |
24 May 1946 @ 0900 |
research-mab |
- approx Note end time ~48 hours - On the 22nd of May, 1946, at 9:33 a.m. a new thermal features broke through the pavement of the parking area 150 feet east of the Norris Museum. This feature received wide publicity throughout the United States as a new geyser.Motion pictures taken of this geyser in its formative stages show the violent boiling action accompanied by the undermining of the pavement. The initial outbreak of steam was observed by some visitors form Iowa who were parked in the area nearby. Steam and mud started working up through the cracks formed in the pavement and, as the action continued, mud flowed out and over the black top surface. As the mud and debris was removed from below, the surface progressively caved in causing a small 2 x 3 foot crater to form. Violent boiling of the thick muddy water to a height of about three feet was observed to throw droplets of mud as high as fifteen feet at times. In this manner, a flat mud cone was piled up around the rim of the caldron. Undermining of the pavement continued for 48 hours to form a crater measuring 12 x 15 feet. After reaching this size the boiling activity quieted down with the water standing about one foot below the pavement level.The water level remained the same, with boiling action, up to eight inches in height, until June 24.
[Yellowstone Nature Notes 1946 Vol 20 #6] |