| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 38664 |
27 Apr 2025 @ 1747 |
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MAB |
still high and pretty greenish blue with a steady center boil - wee mud volcanoes behind it still hissing |
| 38526 |
19 Apr 2025 @ 1613 |
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MAB |
FULL and beautiful greenish - not to west overflow but ground all round is saturated - Also a new to me pair of mud volcanoes towards Mud Spr built over the winter and one was a noisy hissing high pressure vent - will edit this after I check maps for better location and description. Neat |
| 37886 |
31 Oct 2024 @ 1635 |
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SantaFe108 |
Water level ~8in below sinter plates on BW side. Bursting cloudy chocolate-colored water to 3ft tall. |
| 37831 |
29 Oct 2024 @ 1639 |
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MAB |
I wrote "IE" in my book. Same water level as Sun but Big center bursts 3 to 4ft |
| 37792 |
27 Oct 2024 @ 1325 |
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MAB |
level below west chunks - wide boil to 1-2 ft |
| 37734 |
24 Oct 2024 @ 1608 |
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SantaFe108 |
~8in below the top of the BW side sinter plates and bursting + boiling on the right side. Water is murky brown. |
| 37485 |
10 Oct 2024 @ 1028 |
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SantaFe108 |
Clear, green, with center boil. 3 in below covering sinter plates leaning towards the BW. |
| 37370 |
03 Oct 2024 @ 1514 |
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SantaFe108 |
Clear brown water, lazy center boil. Water level ~3in below sinter plates closest to boardwalk. |
| 37250 |
29 Sep 2024 @ 0938 |
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TSBryan |
blooping boiling enough to cause a few 6 inch splashes |
| 36586 |
27 Aug 2024 @ 1909 |
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cb |
pool is HIGH. Water level is ~1' above the rocks on the west edge of the pool. color is mostly green w a hint of yellow & has a moderate blooping boil |
| 36448 |
18 Aug 2024 @ 1244 |
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Craigmon99 |
Yellow. Below overflow. Boiling nicely |
| 35421 |
21 Jun 2024 @ 1520 |
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nails |
Yellow green with constant bubbling. There is a 3 foot piece of wood floating around. |
| 35339 |
19 Jun 2024 @ 1048 |
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Craigmon99 |
Boiling nicely on the right. Pool pulsing up and down. Spring is actually yellowish. |
| 35340 |
19 Jun 2024 @ 1048 |
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Craigmon99 |
Boiling nicely on the right. Pool pulsing up and down. Spring is actually yellowish. |
| 35096 |
10 Jun 2024 @ 1303 |
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SantaFe108 |
Also high, 2 inches from touching the gravel slope on the front side. Sinter plates are fully submerged. Lazy center boil in clear, yellow-green water. |
| 34968 |
07 Jun 2024 @ 1318 |
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CrisG |
pretty yellow green color. light continuous boil in right side of pool. water level about 2-3ft below full |
| 34703 |
26 May 2024 @ 0830 |
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ypcaribou |
Yellow lining pool. Clear turquoise water. Water has covered deposit chunks on rt side. Very full w/ gentle roiling in usual spot. |
| 34254 |
19 Apr 2024 @ 1517 |
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MAB |
fairly clear water covering the western sinter rock chunks - rolling boil |
| 33934 |
26 Jan 2024 @ 1420 |
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JR |
Low, brown, yellow around edges, strong splashing. |
| 33747 |
04 Jan 2024 @ 1539 |
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Graham |
High water with boiling splashing on it. |
| 29319 |
31 Oct 2023 @ 1624 |
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MAB |
mud puddle color bursting over vent - pretty low - most west rocks exposed |
| 29025 |
22 Oct 2023 @ 0907 |
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SantaFe108 |
~5 inches below the NW rocks, peanut butter brown colored murky water with splashy boil on the right side. |
| 28976 |
21 Oct 2023 @ 1535 |
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JR |
1-2 feet below rim. Brown, opaque, strong roil on right side. |
| 28921 |
20 Oct 2023 @ 1555 |
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MAB |
below the west rocks - steady boil light brown water |
| 28891 |
19 Oct 2023 @ 1829 |
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ypcaribou |
cloudy gray brown water lapping at bottom of dep chunks on right side to 6" below that. cobstant splashing to a ft in usual spot. |
| 28879 |
19 Oct 2023 @ 1201 |
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DanS |
Medium water level, vigorous boiling |
| 28768 |
14 Oct 2023 @ 1324 |
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SantaFe108 |
Full covering sinter plates towards the boardwalk. Center boil. |
| 28781 |
14 Oct 2023 @ 1235 |
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MAB |
clear w steady boil - water level is above the NW rocks |
| 28635 |
05 Oct 2023 @ 1214 |
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cb |
pool is clear, VERY full, yellowish green color with roiling boil over the vent. |
| 28576 |
30 Sep 2023 @ 0816 |
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ypcaribou |
Almost looks like a yellow funnel again. Water high - to bottom of deposit pieces at right edge. Clear water with yellow lining pool. |
| 28546 |
29 Sep 2023 @ 1218 |
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User34 |
~2ft below overflow, waving, and bubbling |
| 28011 |
04 Sep 2023 @ 1641 |
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cb |
pool is very high. covering the rocks closest to the bw. clear greenish yellow eith a blooping boil |
| 27596 |
14 Aug 2023 @ 1609 |
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cb |
pool is high, roiling boil to ~ 6', greenish in color |
| 27289 |
28 Jul 2023 @ 2023 |
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SantaFe108 |
Water level is just at the closest sinter plate leaning to the boardwalk with waves lapping over it. Center-right boiling. |
| 27176 |
23 Jul 2023 @ 1430 |
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mhreed |
Light boil. Cloudy green. |
| 26968 |
09 Jul 2023 @ 1542 |
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cb |
water level very high, covering the rocks on the west edge of the pool. Strong blooping boil. water clear and greenish over the vent |
| 26949 |
08 Jul 2023 @ 1941 |
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nails |
Steady boil in center. Filled with clear water - slightly green gray color in the evening light. |
| 26831 |
04 Jul 2023 @ 0916 |
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MAB |
water level well above the SW rocks - steady center boil |
| 26408 |
17 Jun 2023 @ 1513 |
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SantaFe108 |
~5 inches below topmost sinter plate leaning towards the boardwalk. Constant splashy boil. |
| 26312 |
14 Jun 2023 @ 1202 |
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CrisG |
yellow green water nearly to the top of the white bath ring. nice right sided boiling. |
| 25963 |
02 Jun 2023 @ 1021 |
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Tara |
water level ~3' down from top of shoulder, partially covering rocks on front side. water murky yellow brown, lazy bursting. |
| 25864 |
28 May 2023 @ 2000 |
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SantaFe108 |
Murky green water with boiling/splashing in center. Water level is ¾ of the way covering the bottom two sinter plates closest to the boardwalk. |
| 25658 |
21 May 2023 @ 1422 |
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SantaFe108 |
Murky green water and splashing like last report. 1 foot below covering the loose sinter plates towards the boardwalk. |
| 25467 |
15 May 2023 @ 1925 |
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ypcaribou |
Clear but dark gray water. Brown scum at edges. Splashing in usual spot on right to a foot or so every couple seconds. |
| 24578 |
30 Oct 2022 @ 1716 |
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ypcaribou |
Clear, gray, depressing. Full to within 6" of covering the geyserite chunks inside the edge closest to the walk. Burbling in right center. |
| 24407 |
15 Oct 2022 @ 0941 |
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MAB |
slightly cloudy greenish water in a steady boil - pool level is still at half the rock pile |
| 24253 |
05 Oct 2022 @ 1243 |
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cb |
pool is high, only ~6" of the rock pile are exposed on edge closest to the bw. Vigorous 8" blooping boil |
| 29109 |
27 Sep 2022 @ 1200 |
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research-mab |
9/27/2022 - no time noted - Yellow Funnel looked very dark brown and bubbling |
| 24075 |
24 Sep 2022 @ 1552 |
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CrisG |
nice chocolate pool with water well into the southern rocks. moderate boil to eastern side of pool. |
| 24076 |
24 Sep 2022 @ 1552 |
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CrisG |
nice chocolate pool with water well into the southern rocks. moderate boil to eastern side of pool. |
| 23964 |
20 Sep 2022 @ 1703 |
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ypcaribou |
Clearish with dark brown crater. Level to about 2ft below rim. Brown, foamy scum floating at right edge. Was just vigorously boiling then started bursts of splashing at 1705. Splashes creating a 2ft diameter ring in water. |
| 23636 |
07 Sep 2022 @ 1140 |
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MAB |
same water level maybe a smidge into the south rocks but crazy boils and bursts 1-4ft |
| 23502 |
31 Aug 2022 @ 1132 |
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cb |
Pool is high, light chocolate brown with a vigorously blooping boil to 1'. |
| 23325 |
21 Aug 2022 @ 1041 |
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ypcaribou |
Dirty bathwater gray and quite full. Constant boiling in vent and much turbulence. Water maybe 1-2 ft down from ground level. |
| 23262 |
18 Aug 2022 @ 0935 |
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MAB |
very full {comparatively}-1-2 ft below overflow depending on rim - steady very light boil |
| 29091 |
14 Aug 2022 @ 1200 |
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research-mab |
8/14/2022 - no time noted - -Yellow Funnel Spring is muddy & very full → covering the rocks so it kinda looks like a bathtub |
| 23079 |
06 Aug 2022 @ 1136 |
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cb |
Also has water again! ~2' of coffee colored (no creamer!) water down in the vent that is bursting 1-2' up onto the vent rim. VERY active and no longer just a steam vent! |
| 22986 |
02 Aug 2022 @ 1043 |
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cb |
No visable water & no gurgling sounds. just steam and a low level grumble. Looks more like a weak steam vent! Most of the vent is dry with a small damp area where the steam is coming up. |
| 22950 |
31 Jul 2022 @ 1123 |
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cb |
No visable water in it at all. a little rumblings and steam. thats it! |
| 22897 |
27 Jul 2022 @ 1603 |
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MAB |
Empty! Only tips of splashes visible from deep within vent |
| 22741 |
20 Jul 2022 @ 1855 |
20 Jul 2022 @ 1900 |
nails |
Water is muddy brown, vigorous bursting with some splashes 3 feet above water level. Water level is below the rocks in the crater. |
| 29084 |
16 Jul 2022 @ 1200 |
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research-mab |
no time noted - 7/16 Yellow Funnel Spring very brown and violently boiling |
| 22321 |
04 Jul 2022 @ 1449 |
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cb |
pool has dropped another 6" from last observation. rocks on the edge toward the bw are high and dry. Color looks like watery coffee. Vigorous 10" blooping boil |
| 22210 |
29 Jun 2022 @ 1410 |
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cb |
pool has dropped ~4", is now a muddy coffee color brown with a vigorously blooping boil |
| 22119 |
25 Jun 2022 @ 1150 |
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cb |
Water level has dropped ~2". water is a cloudy muddy latte color with a vigorously roiling 4" boil. there is a 2' long stick in the pool |
| 22089 |
23 Jun 2022 @ 1800 |
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cb |
fairly clear water, yellowish tint, roiling boil, water is just barely covering the rocks in the side of the pool closest to the boardwalk |
| 21610 |
31 May 2022 @ 1509 |
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cb |
High water level. 1.5' - 2' below overflow level. water is clear, yellowish tint with a vigorous boil. |
| 21330 |
16 May 2022 @ 1118 |
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Tara |
Water level about 2" below bathtub ring, maybe 18" below edge of basin. Vigorous bubbling over vent. |
| 21176 |
05 May 2022 @ 1311 |
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cb |
Water is at high water mark along the edge! highest water level I've observed. water is clear with a yellowy tint. roiling boil over the vent. |
| 21073 |
24 Apr 2022 @ 1608 |
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DanS |
Water high boiling gently, murky green yellow color. |
| 21015 |
18 Apr 2022 @ 1702 |
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MAB |
Clear - water level above those large chunks on the W side - prob ~1ft deep on N end & 2.5ft over the vent |
| 20301 |
04 Nov 2021 @ 1205 |
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MAB |
still low and splashy- maybe 1/8 full - cloudy green water- on my way back by @ 1241 saw a series of Big Bursts maybe 4-5 ft |
| 20250 |
31 Oct 2021 @ 1011 |
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MAB |
2ft clear water bursts from low in the Crater- est about 10% full |
| 20051 |
19 Oct 2021 @ 1340 |
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cb |
no change, water level same, at the base of the root. bursts to 2' at times. |
| 19833 |
01 Oct 2021 @ 1448 |
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MAB |
vigorous splashing w fairly clear water from deep in vent |
| 19811 |
30 Sep 2021 @ 1247 |
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cb |
BLUE MUD STEAM VENT has a audible boil very deep in the vent that has a Echo like sound to it. no visible water & the splash zone is white, not blue. the side vent towrd green dragon spring is white and just steamy. Yellow Funnel Spring pool level is just barely visible down in the vent h is splashing 2' high or just below the root on the south end of the pool |
| 19699 |
23 Sep 2021 @ 1039 |
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cb |
Yellow Funnel has visable water down in the vent and is splashing up to the rim of the vent with big bubbly bursts. BLUE MUD STEAM VENT still has no visable water or splashes but has very audible gurgling deep down in the vent, also the left side vent is mostly clear of debris and is steaming. |
| 19608 |
16 Sep 2021 @ 1041 |
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cb |
pool water level is not visible but the tips of splashes are visible. Lots of churning/ gurgling sounds. BLUE MUD STEAM VENT > no visible water but can hear churning deep in the vent. Side vent on the left end is clear of debris and is steaming. |
| 19626 |
16 Sep 2021 @ 0919 |
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MAB |
splashy sprays from left vent otherwise basically empty - no water visible |
| 19506 |
12 Sep 2021 @ 0845 |
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mhreed |
Bursting low in its crater. Base water level just out of sight. |
| 19373 |
08 Sep 2021 @ 1145 |
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Tara |
Water level too low to be visible, bursting 2-4' |
| 19039 |
24 Aug 2021 @ 1337 |
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Graham |
Constant boil and bursting 2 to 4 feet. |
| 18998 |
22 Aug 2021 @ 1711 |
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MAB |
maybe 8in clear water in the vent area - small bursts |
| 18782 |
01 Aug 2021 @ 1023 |
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cb |
pool is much higher, up to the rock pile with strong 3' bursts. light yellowing color. Blue Mud Steam Vent is still low, the side vent toward Orby is completely covered with debris. The other side vent is clear of debris and steaming. |
| 18507 |
18 Jul 2021 @ 1059 |
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cb |
Blue mud steam vent is chugging but no visable water. Yellow Funnel Spring HAS WATER BACK in its vent! Low in the vent and pool is just visible but the spray is coming up 1' above the pool with a vigorous boil! |
| 18369 |
11 Jul 2021 @ 1453 |
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cb |
BLUE MUD STEAM VENT has no visable water but I can hear splashing deep in the vent. YELLOW FUNNEL SPRING has the tips of splashing visable. no pool of water visable. |
| 18328 |
09 Jul 2021 @ 1315 |
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MAB |
still totally empty but throwing visible jets of water 1-3ft from within the vent |
| 18281 |
05 Jul 2021 @ 1502 |
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cb |
Blue Mud Steam Vent still has no visable spray of water but I can hear water sloshing around deep in the vent. Yellow Funnel Spring water level is still not visible BUT I can hear it gurgling and can see the tips of splashes deep in the vent.
|
| 18183 |
29 Jun 2021 @ 1335 |
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cb |
Blur mud steam vent still has no visable water but can hear splashing down deep. YFS no water visable or audible, just steam with a occational hissing sound. |
| 18155 |
28 Jun 2021 @ 1703 |
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MAB |
A Fumarole - no sight or sound of water |
| 17726 |
12 Jun 2021 @ 1607 |
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MAB |
No water - zip zero nada - a little moist around the vent |
| 17573 |
08 Jun 2021 @ 1119 |
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cb |
Blue mud spring vent water is churning deep DEEP Down in the vent. water not visable. side vents are inactive and dry. Yellow Funnel Spring HAS NO POOL OF WATER! Splashing deep down in the vent and I can only see the tips is the VIGOROUS larger water splashes |
| 17276 |
30 May 2021 @ 1605 |
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cb |
blue mud steam vent has water churning WAY down in the vent. occasionally I can see a wave of water but the water is not readily visable. Both side vents are steaming but inactive
Yellow Funnel Spring is WAY low! water is down in the vent, 2' from the smooth rim to the south and has a VIGOROUS boil to 1 - 2' roiling boil |
| 16896 |
20 Apr 2021 @ 1605 |
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MAB |
Clear water, moderate boil w a few larger splurts - water level is above the broken rim pieces- about 1/5th full. Nice frosty trees |
| 16823 |
24 Jan 2021 @ 1408 |
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markwolf |
maybe slightly increased boil turbulence. blue mud steam vent is quite low. mud is tan |
| 29170 |
14 Oct 2020 @ 1200 |
--- |
research-mab |
10/14/2020 - no time noted - very high water levels throughout the Back Basin – I’m assuming at least partly due to recent snowfall
Blue Mud Steam Vent – Yellow Funnel Spring – Crater Spring |
| 16396 |
10 Oct 2020 @ 1028 |
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cb |
Blue Mud Steam Vent water level is up a few inches and both side vents are almost connected to the center or main vent. Main vent has a vigorous boil and both side vents are active. Yellow Funnel Spring is high (water is covering the rocks on the west end of the pool). it has a vigorous boil and water is clear and yellowish green |
| 16343 |
06 Oct 2020 @ 1232 |
--- |
cb |
Yellow Funnel Spring pool is high, clear, greenish/yellow with a roiling boil that breaks the surface by a few inches. Water level is just at the top of the big rocks on the West edge of the pool.
Blue mud steam vent pool has dropped ~8". The side vents are above the water/mud level and only the vent to the north is gurgling and occasionally throwing blue mud. The big center pool has a vigorous roiling boil. |
| 16270 |
26 Sep 2020 @ 1615 |
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cb |
Pool is VERY high. Up past the boulders on the westish end of the pool. water is clear, greenish in color with a very light boil. Blue mud steam vent is VERY high and the main vent is overflowing into the 2 small vents on either side of it. All 3 pools have a blooping boil. |
| 16049 |
06 Sep 2020 @ 0728 |
08 Sep 2020 @ 2128 |
underarockphoto |
Clear, boiling, 2 feet below overflow. |