Last Known Eruption
37d 17h 31m ago

Latest Eruptions

Eruption DurationInterval
13 Sep 2019 @ 1311 min5m
13 Sep 2019 @ 1306 min6d 21h 56m
06 Sep 2019 @ 1510 min8m
06 Sep 2019 @ 1502 min1d 5h 43m
05 Sep 2019 @ 09198m
05 Sep 2019 @ 09115d 19h 28m
30 Aug 2019 @ 13439m
30 Aug 2019 @ 13344m
30 Aug 2019 @ 13304m
30 Aug 2019 @ 13264m
30 Aug 2019 @ 1322 ie91d 4h 1m
31 May 2019 @ 0921 min4m
31 May 2019 @ 0917 ie min1d 1h 3m
30 May 2019 @ 0814 min1m 13d 17h 21m
16 May 2019 @ 1453 min4m
16 May 2019 @ 1449 min1d 2h 48m
15 May 2019 @ 1201 min4m
15 May 2019 @ 1157 min5m
15 May 2019 @ 1152 ie min4d 5h 5m
11 May 2019 @ 0647 ns min17h 40m
10 May 2019 @ 1307194d 9m
28 Oct 2018 @ 12586m
28 Oct 2018 @ 12525m
28 Oct 2018 @ 12476m
28 Oct 2018 @ 12414m
28 Oct 2018 @ 1237 ie34d 1h 25m
24 Sep 2018 @ 1112 min4m
24 Sep 2018 @ 1108 min4m
24 Sep 2018 @ 1104 min4m
24 Sep 2018 @ 1100 min5m
24 Sep 2018 @ 1055 min4m
24 Sep 2018 @ 1051 min4m
24 Sep 2018 @ 1047 min4m
24 Sep 2018 @ 1043 min9d 21h 42m
14 Sep 2018 @ 130112m
14 Sep 2018 @ 12495m
14 Sep 2018 @ 1244317d 19h 38m
31 Oct 2017 @ 1706 min4m
31 Oct 2017 @ 1702 min4m
31 Oct 2017 @ 1658 min4m
31 Oct 2017 @ 1654 minLess than a minute5d 4h 50m
26 Oct 2017 @ 1204362d 19h 37m
28 Oct 2016 @ 1627 ie22d 2h 28m
06 Oct 2016 @ 1359 min11m
06 Oct 2016 @ 1348 min49m
06 Oct 2016 @ 1259 min23h 53m
05 Oct 2016 @ 1306 min1d 3h 29m
04 Oct 2016 @ 0937 min18h 31m
03 Oct 2016 @ 1506 min26m
03 Oct 2016 @ 1440 min22h 46m
02 Oct 2016 @ 1554 min1h 25m
02 Oct 2016 @ 1429 min6m
02 Oct 2016 @ 1423 min11m
02 Oct 2016 @ 1412 min6m
02 Oct 2016 @ 1406 min6m
02 Oct 2016 @ 1400 min61d 18h 52m
01 Aug 2016 @ 1908 min6m
01 Aug 2016 @ 1902 min4m
01 Aug 2016 @ 1858 min6m
01 Aug 2016 @ 1852 min5m
01 Aug 2016 @ 1847 min10m
01 Aug 2016 @ 1837 min9m
01 Aug 2016 @ 1828 min6m
01 Aug 2016 @ 1822 min20m
01 Aug 2016 @ 1802 min9m
01 Aug 2016 @ 1753 min11m
01 Aug 2016 @ 1742 min10m
01 Aug 2016 @ 1732 min6m
01 Aug 2016 @ 1726 min5m
01 Aug 2016 @ 1721 min23m
01 Aug 2016 @ 1658 min5m
01 Aug 2016 @ 1653 min2d 7h 32m
30 Jul 2016 @ 0921 min5m
30 Jul 2016 @ 0916 min76d 22h 8m
14 May 2016 @ 1108 min21h 9m
13 May 2016 @ 1359 min2h 39m
13 May 2016 @ 1120 min10m
13 May 2016 @ 1110 min30s 13m
13 May 2016 @ 1057 min41s 208d 23h 51m
17 Oct 2015 @ 1106 min6m
17 Oct 2015 @ 1100 min6m
17 Oct 2015 @ 1054 min10m
17 Oct 2015 @ 1044 min12m
17 Oct 2015 @ 1032 min6m
17 Oct 2015 @ 1026 min6m
17 Oct 2015 @ 1020 min5m
17 Oct 2015 @ 1015 min5m
17 Oct 2015 @ 1010 min5m
17 Oct 2015 @ 1005 min16h 56m
16 Oct 2015 @ 1709 ie16d 7h 55m
30 Sep 2015 @ 0914 min5m
30 Sep 2015 @ 0909 min20m
30 Sep 2015 @ 0849 min5m
30 Sep 2015 @ 0844 min3d 19h 48m
26 Sep 2015 @ 1256 min5m
26 Sep 2015 @ 1251 min6m
26 Sep 2015 @ 1245 min10m
26 Sep 2015 @ 1235 min4m
26 Sep 2015 @ 1231 min5m
26 Sep 2015 @ 1226 min5m

Interval Statistics

Interval Count100
Min4m
Max362d 19h 37m
Mean14d 11h 31m
Median8m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
13466 30 Aug 2019 @ 1339 --- steve Water rose with overflow but no eruption
13518 27 Aug 2019 @ 1349 27 Aug 2019 @ 1406 Janet Jones 1349 Walked up to Lakeshore Geyser in heavy overflow. No bubbling in larger vent until the water began to drop. No bubbles seen in smaller vent. | 1353 Overflow began. D< 1 minute. No bubbles or boiling in smaller vent, large vent stopped boiling during overflow, but vigorous boiling started on the boardwalk side of the vent as soon as the overflow stopped. | 1357 overflow began. D< 1 minute. No bubbles, just smooth overflow. | 1401 overflow began. D= 37 seconds. One bubble rose in the smaller vent. Left vent behaved as before with no boiling or bubbles during overflow, but boiling began the moment the water level dropped. | 1405 Overflow began. D= 27 seconds. No bubbles rising in smaller vent. | 1406 left the area.
13339 21 Aug 2019 @ 1140 --- Janet Jones Water level of the lake below Lakeshore, but waves could still potentially swamp it.
13080 06 Aug 2019 @ 1420 --- Janet Jones The fingerling fish are quite large in the larger vent - in other words: Lakeshore is still underwater.
12810 26 Jul 2019 @ 1530 --- nails Submerged below lake
11476 01 Jun 2019 @ 1449 --- Graham Lake water washing into the vent.
11252 15 May 2019 @ 1205 15 May 2019 @ 1218 steve Lakeshore was trying to erupt with minors about every 4-5 minutes but somewhat less than half resulted in an eruption. The others showed heaver overflow and some bubbling only.
9911 28 Aug 2018 @ 1520 28 Aug 2018 @ 1625 William Lakeshore continues to have minor eruptions of 6” to 18” with intervals between 4-6 minutes. Both vents are active and once reaching overflow drain between 4”-6” starting a new cycle. Largest minors occurred at 15:31, 15:55, 16:14 and 16:21.
9900 27 Aug 2018 @ 1605 --- Micah Kipple Lakeshore is cycling and very close to having bona-fide minors. Surges are reaching 1' at the peak of the cycle but it's erratic and varies in strength.
5904 07 Sep 2017 @ 1300 --- geysergaze 2-3 boils seen while kayaking. It was not doing this yesterday when checked!
4539 25 Jul 2017 @ 1857 --- JSJ Underwater.
4342 20 Jun 2017 @ 1215 --- Tara Under at least a foot of water.
4103 19 May 2017 @ 1755 --- Tara Completely submerged under lake.
4096 14 May 2017 @ 1040 --- Tara Submerged under lake level.
3742 03 Oct 2016 @ 1513 --- bhoppe Overflow without eruption.
3616 07 Sep 2016 @ 0953 07 Sep 2016 @ 1024 CrisG Both pools full and light bubbling from Pressure Pool at 0953. Receded to low pools and 12-18" splashing from Pressure Pool at 0955. 1000 both pools filled before receding to low pool with bubbling and light splashing in Pressure Pool at 1002. Water levels in both pools were relatively equal throughout observation. No bubbling or splashing from Lakeshore Geyser proper. 1005 Pressure Pool back to full with splashing along rim. 1006 receded again. 1007 rolling boils and splashing. 1008 calmer with light splashing, bubbling. 1009 full pool. 1010 receded again. 1012 full to overflow with splashing along rim. 1013 low pool splashing to 12-18" height began. 1019 filled to overflow with bubbling, quickly receded to low pool with splashing after about 30 sec. Splashes to about 1ft height. 1023 filled to overflow with bubbling, light splashing at rim. It then receded to low pool at 1024 and resumed splashing.
3401 01 Aug 2016 @ 1718 01 Aug 2016 @ 1910 JSJ Western vent had frequent periods of relatively calm, light roiling-boiling-spitting, and very low to low to moderately low erupting. Water level was higher during eastern vent's overflow events and minor eruption events. Thermal imaging (FLIR) of Lakeshore Geyser's two vents measured a maximum of 204° Fahrenheit.
3399 01 Aug 2016 @ 1842 --- JSJ Eastern vent - overflow event at 1842 and no eruption.
3398 01 Aug 2016 @ 1833 01 Aug 2016 @ 1836 JSJ Eastern vent - near-overflow event at 1833 and no eruption. Another near-overflow event at 1835 to 1836 with no eruption.
3396 01 Aug 2016 @ 1817 --- JSJ Eastern vent - overflow event at 1817 with no eruption.
3397 01 Aug 2016 @ 1803 01 Aug 2016 @ 1814 JSJ Eastern vent engaged in very low to low splashing from a low pool immediately following the 1802-1803 eruption. This continued to 1808, when a brief pause occurred. Resumed low pool low splashing at 1808 to 1811. Pool higher , with roiling and occasional low splashes at 1812. Resumed low pool low to very low splashing at 1812 to 1814.
3395 01 Aug 2016 @ 1757 --- JSJ Eastern vent - overflow event with no eruption at 1757 to 1758.
3394 01 Aug 2016 @ 1748 --- JSJ Overflow event from eastern vent at 1748 with no eruption.
3393 01 Aug 2016 @ 1737 --- JSJ Overflow event from eastern vent and no eruption.
3388 30 Jul 2016 @ 0915 --- bhoppe Superheated boiling and cycling in both vents. First observation of boiling in the main vent since May
3374 26 Jul 2016 @ 1530 --- bhoppe Wind and breeze caused lake water to cool both vents - no superheated boiling over the pressure pool this afternoon.
3373 26 Jul 2016 @ 0715 --- bhoppe With calm morning waters, there was a light trickle of lake water into the main vent. The pressure pool had nonstop superheated boiling 6-18" in height. Overflows occurred every 5-10 minutes.
3354 23 Jul 2016 @ 0950 --- bhoppe Pressure pool (large vent) is above water and lightly boiling when during overflows which are occurring every ~5 minutes. There is still a trickle of lake water overflowing into the main vent so it is not bubbling, but the water level rises in conjunction with the pressure pool.
2862 20 May 2016 @ 1931 --- bhoppe Waves flowing into main vent. Only boiling in the pressure pool.
2423 26 Sep 2015 @ 1241 --- WillBoekel fill and then drain
2422 26 Sep 2015 @ 1211 --- WillBoekel flood and then drop
2416 24 Sep 2015 @ 1556 --- bhoppe overflow without eruption
2331 12 Sep 2015 @ 1759 --- bhoppe overflow
2332 12 Sep 2015 @ 1723 --- bhoppe overflow
2308 09 Sep 2015 @ 1431 --- Graham overflow
2307 09 Sep 2015 @ 1409 --- Graham overflow no eruption
2306 09 Sep 2015 @ 1400 --- Graham overflow but no eruption
2224 31 Aug 2015 @ 1100 --- bhoppe Main vent was observed to be boiling 6-12" high today with the feature doing temporary overflows. It was not boiling yesterday. I will check it out early this evening.
2079 10 Aug 2015 @ 1500 10 Aug 2015 @ 1520 bhoppe Observed overflows occurred 7-9 minutes apart. This change was apparent at least 3 days ago, today was the first chance I had to confirm that overflows were less frequent than the 4-5 minute overflow cycles of 2 weeks ago. Main vent was placid; it was only reflecting the water level change in the system. The pressure pool was boiling 1-2 feet high. Highest boils occurred 1-2 minutes after overflow was reached.
2012 03 Aug 2015 @ 1435 03 Aug 2015 @ 1440 bhoppe Watched 1 whole fill cycle and parts of other cycles from a distance. No boiling in main vent. Small hole in front of pressure pool reached heights of ~6" during peak overflow. Pressure pool reached 1-1.5 feet after peak overflow.
2004 01 Aug 2015 @ 1455 --- Tara Main vent was taking on more water from wave action. The one cycle I watched still had boiling to 1-2 feet in the pressure pool, but the main vent only overflowed, no bubbles.
2003 01 Aug 2015 @ 1255 01 Aug 2015 @ 1320 Tara Both vents cycling about every 3 minutes. Pressure pool would overflow briefly, then drop about 4 inches and boil to 1-2 feet. Main vent was taking in some water from small wave action, but cycled up to overflow with variable bubbling to as much as 4-6 inches. Low water level was about 3-4 inches below rim.
1994 30 Jul 2015 @ 2100 30 Jul 2015 @ 2205 bhoppe Not boiling. Calm pool with fill cycles reaching peak flow every 4-5 minutes.
1991 30 Jul 2015 @ 1100 --- bhoppe Ranger reported seeing Lakeshore boil from the main vent to 1-2 feet high. Choppy lake water had killed this activity by 1530.
1981 27 Jul 2015 @ 1430 27 Jul 2015 @ 1600 bhoppe Lakeshore is now exposed from the lake. The main vent only had an occasional small trickle flowing into it from the periodical wave. Currently cycling up and down on 4-5 minute cycles. At peak of the cycle, pressure pool will have boiling/splashing 1-1.5 feet high. No boiling from the main vent at this time.
1474 31 Oct 2014 @ 1013 31 Oct 2014 @ 1015 Janet Jones At 1013, the smaller vent on Lakeshore Geyser made a valiant effort to possibly erupt, with a few decent splashes. But at 1015 the water levels dropped to below overflow and the bubbling lessened (but didn't completely stop). The larger vent was splashing and rising up a foot or so on occasion as it has been doing since the water level of the lake dropped enough.
1423 25 Sep 2014 @ 0000 25 Sep 2014 @ 2359 Janet Jones Now showing about the same activity as seen last May.
EntrySourceLinkComment
01 Aug 2016 @ 1802 JSJ https://www.youtube.com/watch?v=DEM6RN0bBsk#t=9m18s Clip 24 of this video compilation (time stamp 9:18 to 10:42) shows Lakeshore Geyser's 6:02 to 6:03 PM minor eruption from the eastern vent on 1 August 2016. The rest of the video depicts other minor eruptions that day.
01 Aug 2016 @ 1721 JSJ https://www.flickr.com/photos/jsjgeology/30094715431 Photo of minor eruption of Lakeshore Geyser's eastern vent at 5:21 PM on 1 August 2016.
Baseline does not exist.


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