| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 40128 |
28 Jun 2025 @ 1818 |
--- |
MAB |
coming up - clearing up - small strings of bubbles |
| 39965 |
20 Jun 2025 @ 1731 |
--- |
MAB |
seems more active than 13th particularly north end - NOTE after editing photos I see water level has risen a few inches since 13th and is slightly more blue and definitely not as dark |
| 39859 |
13 Jun 2025 @ 1730 |
--- |
MAB |
same puke color w strongest boil on N end but boils reach south across the pool |
| 39754 |
08 Jun 2025 @ 1757 |
--- |
MAB |
much stronger boil N end than 5th - rusty water color |
| 39684 |
05 Jun 2025 @ 1741 |
--- |
MAB |
lower than 29th - rusty around edges and indescribable color water will edit when I can describe it! Steady boils N to S across pool |
| 39586 |
31 May 2025 @ 1747 |
--- |
mhreed |
Yellow-green, boiling from multiple spots. |
| 39561 |
31 May 2025 @ 0811 |
--- |
ypcaribou |
Water clear with yellow lining inside edges of crater. Tiny bubbling on far right & in middle |
| 39508 |
29 May 2025 @ 1733 |
--- |
MAB |
pool a little lower - still bluish w yellow edges - 3 areas of moderate bubbles rising in a line N to S roughly |
| 39235 |
21 May 2025 @ 1443 |
--- |
MAB |
bluish center with yellow edges - occasional bubbles seen in a brief stop |
| 38955 |
10 May 2025 @ 1644 |
--- |
MAB |
slightly murky blue - just saw a few lazy bbles on walkby |
| 38801 |
03 May 2025 @ 1659 |
--- |
MAB |
a little murky - green center w yellowish edges - only a few single bubbles or strings of bubbles seen across pool with most action from north end |
| 38670 |
27 Apr 2025 @ 1804 |
--- |
MAB |
still fairly clear but more bubbles across the pool along that fracture line we usually see |
| 38534 |
19 Apr 2025 @ 1635 |
--- |
MAB |
cloudy blue with yellowish edges - nearly to ovfl on west - very few small bubbles |
| 38411 |
10 Apr 2025 @ 1203 |
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SantaFe108 |
Full and crystal clear blue. Water extends ~8 feet outward onto the left beach from the main pool. |
| 37892 |
31 Oct 2024 @ 1644 |
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SantaFe108 |
Boiling on the right side. Water is a murky caramel color. |
| 37839 |
29 Oct 2024 @ 1657 |
--- |
MAB |
Changed again! Not the ugly dark tea but gray green center with weird orange edges - strongest boils reaching a foot near north edge |
| 37804 |
27 Oct 2024 @ 1349 |
--- |
MAB |
Ugly dirty tea color! boils length of pool along that fissure but very strong 4in boil at No. end |
| 37728 |
24 Oct 2024 @ 1553 |
--- |
SantaFe108 |
Dropped! ~1.5ft inward from the yellow beach. Right side boil in murky orange water (Sunny D appearance). |
| 37479 |
10 Oct 2024 @ 1019 |
--- |
SantaFe108 |
Very high,~6ft out on left side. Murky green with center boil. |
| 37376 |
03 Oct 2024 @ 1526 |
--- |
SantaFe108 |
Full of murky light green water. Water level 6' feet out on left side and barely seeping past the rim. |
| 37245 |
29 Sep 2024 @ 0918 |
--- |
TSBryan |
clear and completely calm. Same with Mud Spring. |
| 37220 |
28 Sep 2024 @ 1702 |
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cb |
pool is high & cloudy greenish in color. random bubbles breaking the surface |
| 36583 |
27 Aug 2024 @ 1854 |
--- |
cb |
kinda muddy green in color, pool high. a few bubbles breaking the surface. pingpong ball sized |
| 35425 |
21 Jun 2024 @ 1537 |
--- |
nails |
Grey green center and grey yellow edges. Bubbling in several locations that seem to align from left to right, 1 left 2 middle 1 right |
| 35335 |
19 Jun 2024 @ 1033 |
--- |
Craigmon99 |
Lazy bubbling in center |
| 35336 |
19 Jun 2024 @ 1033 |
--- |
Craigmon99 |
Lazy bubbling in center |
| 35090 |
10 Jun 2024 @ 1249 |
--- |
SantaFe108 |
Full of green water with yellow edges. Water extends about ~2 ft out from the left side. |
| 35001 |
08 Jun 2024 @ 1132 |
--- |
cb |
pool is basically calm. a few bubbles breaking the surface. color is yellowish green with a coating of sulfer dust along the edges |
| 34698 |
26 May 2024 @ 0802 |
--- |
ypcaribou |
yellow lining to clear pool, slightest turquoise color in middle |
| 34261 |
19 Apr 2024 @ 1534 |
--- |
MAB |
Clear! greenish water with slightly yellowish edges - string of pearls bubbling in 4 spots |
| 29031 |
22 Oct 2023 @ 0853 |
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SantaFe108 |
~5 inches below the yellow beach, water was cloudy and a muted pineapple juice yellow color, and splashy right side boil. |
| 28970 |
21 Oct 2023 @ 1527 |
--- |
JR |
2 feet or so below rim, more brown than yellow. |
| 28927 |
20 Oct 2023 @ 1610 |
--- |
MAB |
LOW - the area that was the sulphury yellow edge is the yellow beach now! Stronger boils on right with other bubbles across the pool in a fracture line - cloudy tea colored water |
| 28893 |
19 Oct 2023 @ 1850 |
--- |
ypcaribou |
Muddy, color of coffee with 2 creams, splashing at right side. Level is lower exposing yellow on left side of crater. |
| 28875 |
19 Oct 2023 @ 1139 |
--- |
DanS |
Low pool, olive green with active boiling at both sides of pool. |
| 28764 |
14 Oct 2023 @ 1316 |
--- |
SantaFe108 |
Clear and green, 3 point bubbling. |
| 28633 |
05 Oct 2023 @ 1158 |
--- |
cb |
calm, edges are covered on yellow sulfur dust. water is cloudy & yellowish green in color. |
| 28009 |
04 Sep 2023 @ 1627 |
--- |
cb |
cloudy with a yellowish sulfur ring about 1' wide around the rim of the pool. Pool has a few bubbles breaking the surface |
| 27340 |
30 Jul 2023 @ 0833 |
--- |
ypcaribou |
Yellow lined pool, clear blue water, overall a jade color. Quite full. |
| 27295 |
28 Jul 2023 @ 2039 |
--- |
SantaFe108 |
3 point boil, murky green color. |
| 27173 |
23 Jul 2023 @ 1424 |
--- |
mhreed |
Light boil. Cloudy green. |
| 26946 |
08 Jul 2023 @ 1924 |
--- |
nails |
Bubbling in three spots, left center and right. |
| 26826 |
04 Jul 2023 @ 0858 |
--- |
MAB |
2 pt boil - North end and east side |
| 26360 |
16 Jun 2023 @ 0919 |
--- |
CrisG |
water receded to approx 1.5 ft from sign. light 3pt boil |
| 26319 |
14 Jun 2023 @ 1749 |
--- |
CrisG |
clear light yellow green water up to the front edge of the sign log. light 3 pt boil. |
| 25965 |
02 Jun 2023 @ 1032 |
--- |
Tara |
water level not quite up to bottom of sign. crater very yellow. |
| 25860 |
28 May 2023 @ 1949 |
--- |
SantaFe108 |
Green murky water with yellow band surrounding throat. Bubbling from three points. |
| 25662 |
21 May 2023 @ 1436 |
--- |
SantaFe108 |
Greenish murky water with bubbling at three points. Thick ring of yellow surrounding the throat. |
| 24401 |
15 Oct 2022 @ 0955 |
--- |
MAB |
Clear greenish water with 1.5ft of yellow on the edges - 3 pt boil |
| 24249 |
05 Oct 2022 @ 1224 |
--- |
cb |
Pool is low, 1.5 - 2' below the sign. Green in color with yellow sulfur dust accumulated all along the rim. Roiling boil over the vent on the east end of the pool and smaller bubbles in the center |
| 24081 |
24 Sep 2022 @ 1610 |
--- |
CrisG |
pretty yellow green color. clear with light boil. |
| 24082 |
24 Sep 2022 @ 1610 |
--- |
CrisG |
pretty yellow green color. clear with light boil. |
| 23960 |
20 Sep 2022 @ 1632 |
--- |
ypcaribou |
Thick yellow lining pool. Color overall looks emerald. Clear with bubbles in 2 spots. |
| 23498 |
31 Aug 2022 @ 1105 |
--- |
cb |
High, water level is about 1' away from the back side of its name log. Sulfery yellow/green with a boil on the edge closest to Mystic. |
| 29101 |
25 Aug 2022 @ 1200 |
--- |
research-mab |
8/25/2022 - no time noted - -Mystic Spring lookin’ green |
| 29098 |
21 Aug 2022 @ 1200 |
--- |
research-mab |
8/21/2022 – - no time noted - Mystic Spring has a yellow hue |
| 23327 |
21 Aug 2022 @ 1101 |
--- |
ypcaribou |
Yellow lining walls of spring creating an emerald green, clear pool. |
| 23077 |
06 Aug 2022 @ 1127 |
--- |
cb |
little change, water level is up a few inches |
| 22982 |
02 Aug 2022 @ 1022 |
--- |
cb |
pool is down a few more inches than last observation, ~8" above the inner vent rim. the rim ledge is (and has been)covered in sulfur dust. pool is greenish/yellow with a 3" roiling boil in 5 spots that seem to follow a line from the east to the west end of the pool, dead center. FYI, a week ago it was calm, random occational bubbles, same color. |
| 22920 |
27 Jul 2022 @ 1615 |
--- |
MAB |
nearly full with a few sm bubbles - clear bluish color with yellow edges |
| 29080 |
09 Jul 2022 @ 1620 |
--- |
research-mab |
7/9/22
Mystic Spring is brown & green 420 pm |
| 22317 |
04 Jul 2022 @ 1436 |
--- |
cb |
pool has dropped 1' since last observation. yellowish with a blooping boil at the end of the pool toward Echinus. |
| 22208 |
29 Jun 2022 @ 1359 |
--- |
cb |
pool level has dropped ~4" to just behind the sign log. Edges still are covered in sulfur dust. color yellowish green. bubbling on the east end of the pool. |
| 22116 |
25 Jun 2022 @ 1129 |
--- |
cb |
water level is basicly the same as last observation except it has more yellowy sulfur dust accumulated along the edges of the pool. 2 areas with a small boil breaking the surface. |
| 22092 |
23 Jun 2022 @ 1816 |
--- |
cb |
Mystic and Mud springs are at the high water mark! Mystic water is past the sign, yellowish in color with a small boil on east edge |
| 21606 |
31 May 2022 @ 1450 |
--- |
cb |
pool level is HIGH! Water fro the pool surrounds the name placard. water is clear with a sulfur dust along the edge of the vent. 2 very slight areas with convection, no boil. |
| 21328 |
16 May 2022 @ 1110 |
--- |
Tara |
Green color, looks like a lot of yellow on sides of crater. Water level high enough that the bottom of the name sign is submerged, maybe 6-8" above inner rim. |
| 21011 |
18 Apr 2022 @ 1719 |
--- |
MAB |
Full. Clear greenish water w yellow edges |
| 20299 |
04 Nov 2021 @ 1226 |
--- |
MAB |
yellowish edges with blue green middle - higher water - line of bubbles across the pool in 4 spots w the most action on the Northish end |
| 20055 |
19 Oct 2021 @ 1440 |
--- |
cb |
pool is VERY high with a roiling boil on the East end of the pool. color is blue/green |
| 19898 |
05 Oct 2021 @ 1201 |
--- |
MAB |
higher water - bloopy east side boil - light center boil and occasional bloop from under a ledge on south side |
| 19809 |
30 Sep 2021 @ 1233 |
--- |
cb |
pool is up higher than last observed. Up to the tip of the protruding rock on the east edge of the pool with a small boil right next to it. pool is a cloudy light blue green color. |
| 19698 |
23 Sep 2021 @ 1020 |
--- |
cb |
no change |
| 19606 |
16 Sep 2021 @ 1029 |
--- |
cb |
Water level is ~10" below the high water mark. Pool is a gray color with a 3" blooping boil on the south end. |
| 19370 |
08 Sep 2021 @ 1130 |
--- |
Tara |
Down ~2.5', yellowish murky water, light bubbling in front right corner |
| 18781 |
01 Aug 2021 @ 1012 |
--- |
cb |
pool is higher by a few inches, yellowy green in color with a boil in the side toward Tantalus |
| 18739 |
30 Jul 2021 @ 0730 |
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ypcaribou |
Section of dead, red needled trees just past Mystic Spring on left (walking clockwise around loop). Don't recall seeing this in fall of 2020. |
| 18505 |
18 Jul 2021 @ 1047 |
--- |
cb |
Mystic, Mud & Yellow Spring pools are also much lower than previously viewed. |
| 18370 |
11 Jul 2021 @ 1442 |
--- |
cb |
no change from last observation. |
| 18282 |
05 Jul 2021 @ 1453 |
--- |
cb |
Mystic Spring, Mud & Yellow mud all look the same as last observed on 6/29. Yellow mud might be a tad lower. No longer any spray from Puff & Stuff geyser. |
| 18185 |
29 Jun 2021 @ 1321 |
--- |
cb |
same level. yellowish green with a vigorous boil on the edge toward Echinus. |
| 17575 |
08 Jun 2021 @ 1110 |
--- |
cb |
pool up a bit from last observation. Vigorous boil on east edge. yellow in color |
| 17278 |
30 May 2021 @ 1551 |
--- |
cb |
pool up slightly (a few inches) higher than the 6th. It's a sulfury yellow green color with a vigorous boil on the east and south side of the pool |
| 16394 |
10 Oct 2020 @ 1018 |
--- |
cb |
same as last observation. Yellowish with a few random bubbles breaking the surface. |
| 16341 |
06 Oct 2020 @ 1220 |
--- |
cb |
Water level is covering the shelf on the south east edge by ~2-3" of yellowish/green, clear water and occasional bubbles break the surface in this area. |
| 16272 |
26 Sep 2020 @ 1629 |
--- |
cb |
Mystics pool is high. 3" of water covers the shelf inside the pool on the south end of the pool. It is yellowish green, calm with occasional dime to quarter sized bubbles breaking the surface. |
| 15548 |
13 Aug 2020 @ 1026 |
--- |
cb |
pool is covering the shelf on the NE edge with about 4" of water and has a few random bubbles breaking the surface. color is yellowish green. pool is calm |
| 15658 |
03 Aug 2020 @ 1055 |
--- |
Tara |
With Steamboat in steam phase, Mystic Spring was down about 18" from the log on the west side and had slightly murky green-blue water. |
| 14526 |
03 Jun 2020 @ 1340 |
--- |
cb |
Pool is low, calm and has that sulfer yellow color at the edges to about 1' down into the pool and then deeper into the vent it becomes greenish. |
| 14502 |
01 Jun 2020 @ 1803 |
--- |
ypcaribou |
Clear, emerald blue |
| 13927 |
12 Oct 2019 @ 1230 |
--- |
cb |
water level is up to the sand on rhe west end of the pool. It is clear, greenish in color & no bubbles. |
| 13890 |
05 Oct 2019 @ 1210 |
--- |
cb |
pool is high, clear and occasional bubbles. |
| 13756 |
19 Sep 2019 @ 1220 |
--- |
cb |
light emerald green in color. Occasional bubbles on the east and west end of the pool. |
| 13254 |
14 Aug 2019 @ 1619 |
--- |
cb |
unchanged. ~2' below rim. greenish yellow with a boil on the east end of the pool. |
| 13125 |
09 Aug 2019 @ 0834 |
--- |
cb |
pool is low. water is just covering the rock outcropping/shelf of the NE rim. color is a cloudy greenish yellow. **Mud spring is very low! Down ~ 2.5' from the rim (not overflow). Pool is calm and cloudy greenish in color. ** Blue Mud Steam Vent water level is low. Splashing water is barely visable deep in the vent. |
| 29135 |
05 Aug 2019 @ 1200 |
--- |
research-mab |
8/5/2019 - no time noted- Crater Spring, Root Spring, Mystic Spring and Yellow Funnel are between 1 and 4 ft lower water level |
| 12995 |
03 Aug 2019 @ 0835 |
--- |
cb |
yellowish green in color. 3 areas that have bubblers breaking the surface. |
| 12969 |
02 Aug 2019 @ 0936 |
--- |
MAB |
green yellow in color with fairly active bubbles |
| 12889 |
31 Jul 2019 @ 0854 |
--- |
cb |
light yellowish green in color and has a small roiling boil on the south end |
| 11022 |
20 Apr 2019 @ 1033 |
--- |
MAB |
Low water, appeared slightly cloudy but could have been steam. |