Last Known Eruption
2y 161d 11h 54m ago

Latest Eruptions

Eruption DurationInterval
18 Oct 2021 @ 15137m
18 Oct 2021 @ 1506 ie20d 55m
28 Sep 2021 @ 1411 ie12d 1h 53m
16 Sep 2021 @ 1218 maj1m 8s 8m
16 Sep 2021 @ 1210 maj1m 25s 7m
16 Sep 2021 @ 1203 maj1m 24s 8m
16 Sep 2021 @ 1155 maj1m 18s 6m
16 Sep 2021 @ 1149 ie1h 48m
16 Sep 2021 @ 1001 maj7m
16 Sep 2021 @ 0954 maj1m 16s 7m
16 Sep 2021 @ 0947 maj1m 9s 7m
16 Sep 2021 @ 0940 maj1m 15s 7m
16 Sep 2021 @ 0933 maj1m 9s 7m
16 Sep 2021 @ 0926 ie maj2d 17h 29m
13 Sep 2021 @ 1557 maj7m
13 Sep 2021 @ 1550 maj6m
13 Sep 2021 @ 1544 maj7m
13 Sep 2021 @ 1537 maj6m
13 Sep 2021 @ 1531 maj7m
13 Sep 2021 @ 1524 maj7m
13 Sep 2021 @ 1517 maj6m
13 Sep 2021 @ 1511 maj6m
13 Sep 2021 @ 1505 maj6m
13 Sep 2021 @ 1459 maj7m
13 Sep 2021 @ 1452 maj6m
13 Sep 2021 @ 14466m
13 Sep 2021 @ 1440 maj7m
13 Sep 2021 @ 1433 maj6m
13 Sep 2021 @ 1427 maj7m
13 Sep 2021 @ 1420 maj6m
13 Sep 2021 @ 1414 maj6m
13 Sep 2021 @ 1408 maj4h 18m
13 Sep 2021 @ 0950 maj58s 7m
13 Sep 2021 @ 0943 maj6m
13 Sep 2021 @ 0937 maj55s 6m
13 Sep 2021 @ 0931 maj57s 7m
13 Sep 2021 @ 0924 maj1m 12s 7m
13 Sep 2021 @ 0917 maj1m 19s 5m
13 Sep 2021 @ 0912 maj1m 27s 1d 17m
12 Sep 2021 @ 0855~1m 22h 38m
11 Sep 2021 @ 1017 maj6m
11 Sep 2021 @ 1011 ie maj2d 15h 25m
08 Sep 2021 @ 1846 maj6m
08 Sep 2021 @ 1840 maj6m
08 Sep 2021 @ 1834 maj7m
08 Sep 2021 @ 1827 maj6m
08 Sep 2021 @ 1821 maj7m
08 Sep 2021 @ 1814 maj6m
08 Sep 2021 @ 1808 maj6m
08 Sep 2021 @ 1802 maj7m
08 Sep 2021 @ 1755 maj6m
08 Sep 2021 @ 1749 maj6m
08 Sep 2021 @ 1743 maj6m
08 Sep 2021 @ 1737 maj7m
08 Sep 2021 @ 1730 maj6h 16m
08 Sep 2021 @ 1114 maj1m 19s 7m
08 Sep 2021 @ 1107 maj1m 20s 7m
08 Sep 2021 @ 1100 maj1m 8s 8m
08 Sep 2021 @ 1052 maj1m 3s 7m
08 Sep 2021 @ 1045 maj1m 7s 22m
08 Sep 2021 @ 1022:24 maj1m 21s 7m 4s
08 Sep 2021 @ 1015:20 maj1m 12s 6m 52s
08 Sep 2021 @ 1008:28 maj1m 8s 6m 56s
08 Sep 2021 @ 1001:32 maj1m 3s 6m 45s
08 Sep 2021 @ 0954:47 maj55s 7m 7s
08 Sep 2021 @ 0947:40 maj1m 5s 7m 26s
08 Sep 2021 @ 0940:14 maj1m 14s 7m 9s
08 Sep 2021 @ 0933:05 maj1m 11s 6m 48s
08 Sep 2021 @ 0926:17 maj1m 7m 12s
08 Sep 2021 @ 0919:05 maj1m 11s 7m 30s
08 Sep 2021 @ 0911:35 maj1m 18s 7m 15s
08 Sep 2021 @ 0904:20 maj1m 16s 7m 55s
08 Sep 2021 @ 0856:25 maj1m 20s 7m
08 Sep 2021 @ 0849 maj4d 4m
04 Sep 2021 @ 0845 maj1m 35s 9m
04 Sep 2021 @ 0836 maj1m 28s 20h 9m
03 Sep 2021 @ 1227 ns maj7m
03 Sep 2021 @ 1220 ns maj1d 19h 0m
01 Sep 2021 @ 1720 maj54s 6m
01 Sep 2021 @ 1714 maj56s 7m
01 Sep 2021 @ 1707 maj50s 6m
01 Sep 2021 @ 1701 maj58s 8m
01 Sep 2021 @ 1653 maj1m 8s 7m
01 Sep 2021 @ 1646 maj1m 12s 6m
01 Sep 2021 @ 1640 maj1m 7m
01 Sep 2021 @ 1633 maj1m 15s 7m
01 Sep 2021 @ 1626 maj1m 28s 1d 7m
31 Aug 2021 @ 1619 min1m 7s 4m
31 Aug 2021 @ 1615 min1m 25s 5m
31 Aug 2021 @ 1610 min1m 25s 5m
31 Aug 2021 @ 1605 min1m 15s 4m
31 Aug 2021 @ 1601 min1m 5s 4m
31 Aug 2021 @ 1557 min1m 28s 4m
31 Aug 2021 @ 1553 min1m 29s 1d 21h 54m
29 Aug 2021 @ 1758:461m 16s 6m 58s
29 Aug 2021 @ 1751:481m 16s 7m 22s
29 Aug 2021 @ 1744:261m 14s 7m 1s
29 Aug 2021 @ 1737:251m 12s 8m 4s
29 Aug 2021 @ 1729:211m 10s 8m
29 Aug 2021 @ 172150m

Interval Statistics

Interval Count100
Min4m
Max20d 55m
Mean11h 59m
Median7m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
33936 26 Jan 2024 @ 1537 --- JR A bit low, lots of bubbles. Clear.
33910 24 Jan 2024 @ 1340 --- JR Bubbly throughout, clear and blue
29034 22 Oct 2023 @ 0846 --- SantaFe108 Low and a murky blueish-gray, boiling in multiple places. Water level about 1½ feet below the left rocks.
28967 21 Oct 2023 @ 1515 --- JR Very low, strong bubbling in back. Not very clear or blue. With all other observed activity, looking like possible disturbance in Back Basin.
28931 20 Oct 2023 @ 1619 --- MAB clear - boils N&E alcoves plus a center boil
28874 19 Oct 2023 @ 1131 --- DanS Multiple boils from two areas of pool. Medium water level.
28761 14 Oct 2023 @ 1311 --- SantaFe108 Clear and blue, Full but no longer creeping down the slope.
28780 14 Oct 2023 @ 1216 --- MAB super full with no visible boils in the N alcove - a little movement on the East
28743 12 Oct 2023 @ 1600 --- JR No longer overflowing. Clear, decent bubbles.
28723 09 Oct 2023 @ 1340 --- cb CS pool is back to a very high level & is overtopping on the northend end of the pool toward the old path. Runoff extends about 5' from the pool edge. Softball sized bubbles breaking the surface over both vents. no activity in the alcove. **Root pool is also VERY high & a milky light green color.
28631 05 Oct 2023 @ 1142 --- cb pool has dropped 3-4" since my last observation. no longer overflowing out the north end. pool is clear with weak tennis ball sized bubbles just breaking the surface over the 2 vents. nothing from the Alcove.
28008 04 Sep 2023 @ 1620 --- cb pool is at the same level as observed most of the summer. maybe a inch or 2 lower but still VERY HIGH! Softball sized bubbles breaking the surface in the usual places. pool is clear and blue
27595 14 Aug 2023 @ 1530 --- cb pool is still VERY high & seeping over the north edge of the pool still. Activity over the vents has increased to bigger softball-basketball sized bubbles, height 3"-5" breaking the surface, and now the vent in front of the alcove area has bubbles breaking the surface.
27519 11 Aug 2023 @ 1100 --- cb pool is still VERY high. Seeping a few feet over the rim on the north end of the pool toward the old pathway. (toward Steamboat) Tennis ball sized bubbles breaking the surface over the north & east vents. pool is clear & blue
27299 28 Jul 2023 @ 2047 --- SantaFe108 *JUST* high enough to creep towards the slope, but not going down it. Boiling in back, right, and front of the pool.
27164 23 Jul 2023 @ 1502 --- cb pool is at the same level, VERY high and close to seeping over its edge on the north edge of the pool. (toward the old walkway) softball + sized roiling boil, bubbles breaking the surface over the center, south & north vents of the pool. pool is clear and blue green in color
27171 23 Jul 2023 @ 1421 --- mhreed Full, nearly in overflow. Bubbles coming up in multiple places. Clear.
26967 09 Jul 2023 @ 1518 --- cb Still holding its VERY high pool level. Water level is creeping toward the old path on the north end of the pool (toward SB) Water is clear, blue/green with a few bubbles breaking the surface by the N & E ends of the pool.
26941 08 Jul 2023 @ 1912 --- nails Very full of blue water. Most of the bubbling is in north end.
26839 04 Jul 2023 @ 0848 --- MAB full full full clear water - boil in north alcove and east corner
26310 14 Jun 2023 @ 1143 --- CrisG full, clear blue. light bubbing at rear of pool and occasional bubbles on right side of pool.
25966 02 Jun 2023 @ 1042 --- Tara crater nearly full, water clear and blue with slight yellow tint. gentle bubbling over main vent and along east side.
25857 28 May 2023 @ 1940 --- SantaFe108 Full and bubbling in many places with clear blue water. Water is ~3ft from the drop off the shelf on the right side.
25665 21 May 2023 @ 1444 --- SantaFe108 Full with beautiful blueish water. Bubbling from several places.
25462 15 May 2023 @ 1855 --- ypcaribou On approach, I whistled and said "That is one full Crater Spring!" Clear with hint of blue. Bubbling in at least 4 areas. Overflowing shelf on right to abt 3 feet out, water joined at both end of long deposit rock.
24575 30 Oct 2022 @ 1632 --- ypcaribou Quite full including alcove. A lovely, light, sea glass green. Bubbling in the usual spots. Back Basin has a stronger stink than usual this afternoon.
24245 05 Oct 2022 @ 1204 --- cb pool is down ~4". clear/ light greenish with a 6-8" blooping boil over the North pool & several blooping boils atound the nose on the east edge. There is a noisy gurgling sound like a boiling tea kettle somewhere around the rim of the north pool.
24083 24 Sep 2022 @ 1617 --- CrisG water high enough that pooland alcove are connected around the wall between them. low boil over main vent and periodic blooping boil to the SE. Alcove is quiet. clear greenish colored water.
24084 24 Sep 2022 @ 1617 --- CrisG water high enough that pooland alcove are connected around the wall between them. low boil over main vent and periodic blooping boil to the SE. Alcove is quiet. clear greenish colored water.
23954 20 Sep 2022 @ 1602 --- ypcaribou Full such that alcove and pool are joined by water. Roiling in N end and periodic bubbling to SE. Clear water with yellow lining pool.
23495 31 Aug 2022 @ 1042 --- cb continues to be VERY high. Water covers the nose and well into the beach to its south. ~6" boil over the main vent with smaller bubblers close by. Many ~2"-4" blooping vents around the the nose. no activity in the Alcove. water is clear & greenish.
23420 27 Aug 2022 @ 1130 --- cb pool is up by ~4". covering 1/2 of the beach next to the nose. could be from recent rain
23386 24 Aug 2022 @ 1105 --- cb water level is just about at the same level as my last report, at the nose. water is clear/greenish, no yellowish color or dust, steady roiling/blooping boil over north pool and around the nose. Alcove is quiet.
23329 21 Aug 2022 @ 1122 --- ypcaribou Clear, light emerald green. Crater looks yellowish at edges (underwater). Boiling in NW vent and at SE edge. Observed a group of about 10 including small children walk up and a tall male stepped over the Danger sign to have his photo taken. He joked about knowingly violating rules and that it's OK to do that sometimes. Everyone else in the group were yelling at him to get back on the path as he mocked the situation. They did keep him from walking up to the very edge (thus avoiding a slip and news headline).
23105 08 Aug 2022 @ 1911 --- cb no change
23049 05 Aug 2022 @ 1036 --- cb no change
23009 03 Aug 2022 @ 1501 --- cb pool has dropped another ~2" and is now below the rocky beach & just at the nose. still has a roiling boil over the 2 vents in the pool. Alcove is calm. water is clear and blue green
22979 02 Aug 2022 @ 1005 --- cb pool is down ~2". just covering the nose on the edge of the pool toward Echinus. color is blue and clear. rolling boil over both vents
22957 31 Jul 2022 @ 1110 --- cb pool is still very high! water is partially covering the "nose" and 1/2 way into the beach of rocks next to it. water is crystal clear with roiling boil in the typical places
22780 22 Jul 2022 @ 1127 --- cb pool has come up another ~2" and is now completely covered the "nose" rock on the edge of the pool toward Echinus. water is clear with a roiling boil over the north pool (edge) & the east edge (toward Echinus) pool is almost at the same height as noted early this spring.
22735 20 Jul 2022 @ 1811 --- cb pool has come up ~10 "-1' since my last observation! Water is covering the "nose" by 3" on the edge towards Echinus. water is clear with a slight 3" blooping boil over north pool. Alcove and main pool are connected with a channel of water.
22565 14 Jul 2022 @ 1320 --- cb water level has come up ~4". Rock outcroping in the pool closest to the boardwalk is covered with 3" of water. Vigorous roiling/BLOOPING boil over the NP & many small boils on the edge toward Echinus. water is clear & blueish
22493 11 Jul 2022 @ 1634 --- cb pool has come up a inch or so. water is clear, green with a typical boil. not the vigorous boil its had
22361 06 Jul 2022 @ 1143 --- cb Pool is at basically the same level. Rocky outcropping that's in the pool toward the path has the top of it exposed. Vigorous 1' boil over the north pool & smaller boils on the edge towards Echinus. Alcove has blips to 3". color is no longer muddy brown, it's clearer and more blue.
22314 04 Jul 2022 @ 1430 --- cb pool dropped ~4"
22206 29 Jun 2022 @ 1351 --- cb only change is the color of the water is darker muddy brown.
22181 28 Jun 2022 @ 1511 --- cb pool is basically at the same level, same play/boil but a muddier brown color.
29075 28 Jun 2022 @ 1200 --- research-mab - no time noted - 6/28 Crater Spring brown & bubbling – JT
22144 26 Jun 2022 @ 1902 --- cb CS pool has dropped another few inches. It is a cloudy muddy color and has a vigorous blooping boil over both vents. Blooping to ~6-8" over the NP with many active vents around it
22115 25 Jun 2022 @ 1117 --- cb Pool has dropped a good 4" in the past 48 hours. It is a bit more cloudy with a yellowish/blue tint. North end of the pool has a substantial vigorous 8" roiling blooping boil as does the south east edge by the "nose". Alcove has an occational tennis ball sized bubble breaking the surface. There is a bw plank in the alcove edge of the pool.
21901 10 Jun 2022 @ 1157 --- novakg Crater Spring was in a rolling boil during Steamboat's eruption.
21604 31 May 2022 @ 1431 --- cb water level is HIGH, Alcove & the main pool are connected at the broken rim . Blooping boils on the north and SE edge. pool is clear with a greenish tinge.
21327 16 May 2022 @ 1100 --- Tara Water level just high enough for the main pool and the west vent to be connected. Greenish color, strong boil over the main vent area.
21177 05 May 2022 @ 1330 --- cb water level is VERY high. Covers the "nose" on the end of the pool toward Echinus. water is clear w a yellowy tint. Boils over the north & south vent with a small bubbler by the rock in front of the Alcove
21075 24 Apr 2022 @ 1634 --- DanS 5 point boil near full pool.
21007 18 Apr 2022 @ 1728 --- MAB about half full well around the collapsed sinter chunks - boils on N end - smaller bubbles on E side - Clear
20986 15 Apr 2022 @ 1559 --- mwolf water level quite high
20288 04 Nov 2021 @ 1320 --- cb no change
20269 03 Nov 2021 @ 1145 --- cb Both pools are a few inches lower than last observation. The rock ledge that separates the 2 pools has ~3" of exposed rock. North pool has a vigorous 1.5-2' continuous boil with no variation. Alcove rises and falls a few inches, no splashing
20146 27 Oct 2021 @ 1235 27 Oct 2021 @ 1250 cb Water level in both pools is connected and covering the shelf of rocks that earlier this summer were exposed and separated the Main pool from the active North pool. North pool has a consistent vigorous roiling boil to 2' from 3 main areas. Water is clear and no longer steel gray. Main pool still has apple sized bubbles along the east edge. Alcove has some minimal fluctuation in water level. no boil observed.
20058 19 Oct 2021 @ 1452 --- cb main pool has come up a few inches and is connected with the North pool. North pool is still in a consistent vigorous roiling boil, occasionally increasing in vigor but mostly the same intensity. Alcove is just bubbling
20021 17 Oct 2021 @ 1630 --- MAB low - continuous vigorous boils from 3+ venta in North alcove
19925 06 Oct 2021 @ 1644 --- cb same as last observed except water level in both pools is up ~3". North pool in constant vigorous boil to ~1.5'. Alcove raising and falling with some 6" splashes at times. North & Main pool are consistently at the same level. Bigger grapefruit sized bubbles breaking the surface in the main pool
19808 30 Sep 2021 @ 1211 --- cb np is still in a constant boil.
19759 27 Sep 2021 @ 1105 --- cb No change. North pool is still in constant vigorous boil 8"- 1'.
19746 26 Sep 2021 @ 1447 --- cb No cycling of majors or minors just a steady, consistent, vigorous boil from the north pool to about 1'. Main pool has come up a few inches with the same 5 apple sized boils. It is just a few inches below the north pools level and It is a green gray color. Alcove water level stays at the same place with a audible bubbling sound.
19696 23 Sep 2021 @ 0957 23 Sep 2021 @ 1017 cb Not any change since last observation. North Pool is in constant, vigorous roiling boil. Main pools water level is very low (3" below North pool) and has 5 apple sized boiling points that break the surface along the south east edge of the pool. Alcove water level rises and falls ~2" but no splashes or eruption. Pool color is still a murky gray color.
19660 19 Sep 2021 @ 1548 19 Sep 2021 @ 1630 cb Crater Spring north pool is in a constant vigorous roiling boil to ~2' mostly against the south back edge. Main pool has 5 - 6 apple sized boils that break the surface to ~2". Alcove pool rises about 4" and falls with out any splashes. Both pool levels stayed constant during my observation. North pool seemed to get a little bit less active for a few brief minutes and then resume its consistent boil.
19454 10 Sep 2021 @ 1610 10 Sep 2021 @ 1620 User34 No majors observed from Steamboat lower deck
19459 10 Sep 2021 @ 1526 10 Sep 2021 @ 1548 novakg North vent boil only. Temperature reading around 150 to 152 F. 1548 left for Vixen.
19380 07 Sep 2021 @ 1010 07 Sep 2021 @ 1130 CrisG Vigerous boiling from the North vent to 1-1.5 ft.
19356 06 Sep 2021 @ 1100 06 Sep 2021 @ 1900 Art Crater Springs is vigorously boiling from the North Pool vent and is not having any minor or major eruptions.
19324 05 Sep 2021 @ 1030 05 Sep 2021 @ 1500 Art Crater Springs is vigorously boiling from the North Pool vent and is not having any minor or major eruptions.
19309 04 Sep 2021 @ 1830 04 Sep 2021 @ 1900 Art Crater spring is back to having minor eruptions this evening
19254 03 Sep 2021 @ 1217 03 Sep 2021 @ 1230 Art Crater spring appears to be having major eruptions about every 7 mins. Behavior is similar to major eruptions previously observed.
19222 01 Sep 2021 @ 1624 01 Sep 2021 @ 1721 Art Majors are back today Intervals - 6m 30s - 7m 11s Duration - 50s - 1m 28s Some huge North pool bursts 12-15’ Alcove bursts sometimes splashing into main pool. Water levels low enough between eruptions to separate north pool and main pool, water rising 12” during eruption making one pool.
19176 31 Aug 2021 @ 1550 31 Aug 2021 @ 1620 Art Crater Springs is having shorter height eruptions to about 2-3’. North pool continuously boiling then builds to a vigorous boiling eruption. Water level only rising about 6” during eruption then settles down to nearly flush with main pool between. Interval between eruptions of around 4 minutes. Eruptions lasting 1m 5s - 1m 30s. Only two to three small splashes from Alcove during eruptions to 6-12”. Main pool barely has 2-3 apple size bubbles.
19178 31 Aug 2021 @ 1314 31 Aug 2021 @ 1356 ge 1-2 foot boils, but no eruption
19094 26 Aug 2021 @ 1558 26 Aug 2021 @ 1653 Art CS water level low separating main pool from north pool. Main pool has four apple size boils. North pool gently boiling and below vent rim. Alcove audibly boiling/gurgling between eruptions. Water levels in north pool rising near start, gradually overflowing from north pool into main pool. Wide bursting eruption from north, about 6-10’, splashing outside of pool sometimes reaching area of old path to the north. Alcove erupting about 4’ and about flush with the ground. Largest bursts near end of eruption after north vent starts settling down. Main Pool rising about 18” during eruption. Eruptions about 1m 15s-1m 30s in duration and about every 7 minutes.
19085 25 Aug 2021 @ 1020 25 Aug 2021 @ 1300 cb major eruptions continue ~every 7 minutes till I left at 1300
18920 13 Aug 2021 @ 1610 13 Aug 2021 @ 1637 Art CS exactly as per cb’s description on 8-11-2021. Unchanged. 1617-1623 - “Stronger” boil with increased with more overflow out the south towards main pool. Boil to 2’. Alcove sloshing and splashing to 1’. 1627-1630- “Stronger” boil with splashing up to 3’
18893 11 Aug 2021 @ 1030 --- cb CS is no longer erupting. It's water level is VERY LOW. The North Pool is in continuous roiling boil to 1', Main pool has 4 small apple sized boiling points along the edge of the pool toward Echinus and is VERY low. exposed rocks at the bottom. The Alcove is erupting to ~5"-10". big difference from 2 weeks ago!
18811 30 Jul 2021 @ 0905 30 Jul 2021 @ 1800 Micah Kipple It appeared to us that the eruptions generally got bigger throughout the day. Several of the last eruptions we saw sent water droplets to at least 10 feet and nearly hit the bumper logs but never crossed them.
18752 30 Jul 2021 @ 1000 --- Micah Kipple Please Note: durations are first splash to last splash out of the alcove.
18675 26 Jul 2021 @ 0939 26 Jul 2021 @ 1516 cb Pool is still a murky gray color.. The longer intervals from 0939 on represent the duration from start to when the Alcove vent stops spitting water and grumbling. The shorter ~2m intervals are when the north vent slows down and begins to drop but the Alcove continued. I wasn't including the Alcove ending spits in the 2m durations so I am noting the difference here.
18662 25 Jul 2021 @ 0937 --- cb HOLY S**T! Crater Spring's pool has dropped even lower! The pool is so low that the active vent on the north end of the pool is almost completely.... HOLY... IT'S ERUPTING! OUT OF 2 VENTS! The North Vent and the Alcove. To heights of 6'-8' and the color of the water is dark gray.
18579 22 Jul 2021 @ 1036 --- Tara Water level ~4 ft down with boiling and splashing that reached 1-2 ft at times in back vent. Murky yellow-brown. Steam vent with yellow deposit on north side of crater.
18503 18 Jul 2021 @ 1027 --- cb Lowest pool I've ever seen! Down 4' from high water mark. 1' below the Alcove! Vigorous 1' boil on north vent. If the pool drops much lower the north vent will be separated from the rest of the pool!
18372 11 Jul 2021 @ 1422 --- cb much the same as last observation, pool is low, except the alcove has some bubbles
18284 05 Jul 2021 @ 1431 --- cb Pool is VERY low. Rocks in the pool closest to the boardwalk are exposed. Vigorous boil on north the north & east edges of the pool. Water is clear. Pool appears ~3" lower than last observed on 6/29/21.
18187 29 Jun 2021 @ 1259 --- cb pool is VERY low. rock out cropping closest to the boardwalk is exposed and dry. Vigorous 1' boil on the north edge. Pool has dropped a good 6-8" since last observation on ⁶/26.
17577 08 Jun 2021 @ 1019 --- cb pool is VERY VERY LOW! Pool is a yellowy green color with what looks like sulfur dust in the shallow areas! Rocks that are usually water covered to the west are exposed and dry. Vigorous boil on north edge and on the south edge. alcove has a bit of water.
17280 30 May 2021 @ 1536 --- cb pool is still low. The rock outcroppings on the north east and east edge of the pool are exposed and dry. Down 1.5' from 5/6/21. vigorous 4pt boil on north edge east. Alcove has water
17157 21 May 2021 @ 0824 --- cb pool is LOW! Down 1.5' since last observation. The alcove barely has a puddle of water in it with a boil under the alcoves rock bridge. pool is clear with boiling points on the north and east rim
17029 09 May 2021 @ 1158 --- cb pool is down about 4". Still a vigorous boil on the north & SE edges. convection waves in the alcove. The water is clear
16996 06 May 2021 @ 1954 --- cb Pool is very high and has several boilingpoints. especially on the north edge
29171 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
16392 10 Oct 2020 @ 1007 --- cb water level is higher than last observed. it is covering the "nose" on the south end of the pool. bubbles on the south and north edge of the pool but a bit hard to see through the steam. Water is clear with a tiny of green.
16339 06 Oct 2020 @ 1206 --- cb Crater Spring pool is high and just covering the nose on the south edge of the pool with a moderate boil in this area. Also, moderate boil on the north edge that's blooping to 2". pool is clear and greenish. No boil in the Alcove area.
16274 26 Sep 2020 @ 1640 --- cb water level is high! The peninsula on the east side of the pool is covered in 3" of water. weak boil on both the north and east sides of the pool. nothing in the alcove.
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