Last Known Eruption
5y 137d 14h 20m ago

Interval Statistics

Interval Count27
Min2h 13m
Max2y 232d 2h 50m
Mean123d 1h 34m
Median4d 21h 26m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
21933 11 Jun 2022 @ 0615 --- LynnS Water level down several inches and pool is slightly murky. This is the first “Lemon Drop” I have observed since the road opened May 28. Water level still down about 6 inches but water has cleared from murky tan to cloudy blue at 0850
20234 30 Oct 2021 @ 1815 --- DanS Lemon Spring is back full and overflowing
20219 30 Oct 2021 @ 0930 --- DanS Down almost a foot below rim. Has been full with overflow prior 6 days.
19213 01 Sep 2021 @ 0931 --- LynnS Diwn about 4-6 inches below overflow and murky, the first time i have seen it dropped this season.
19304 01 Sep 2021 @ 0726 --- Barbara Lasseter pool in overflow on first pass thru FLD at approx 0705. Second pass 0726 pool was approx 8" below overflow.
14491 02 Jun 2020 @ 0915 --- LynnS Pool is full with light overflow.
11481 01 Jun 2019 @ 1726 --- User34 Down half an inch
11390 28 May 2019 @ 0715 --- TSBryan strong overflow with small bubbling
11341 24 May 2019 @ 0952 --- TSBryan barely below overflow
10376 18 Sep 2018 @ 1711 --- Siegmund Full.
10375 18 Sep 2018 @ 1216 --- Siegmund ~5cm below overflow
10354 16 Sep 2018 @ 1243 --- Siegmund in overflow. Same at 1711.
9115 10 Jul 2018 @ 1432 --- udo slightly below overflow
8928 28 Jun 2018 @ 1521 --- udo Not in overflow
8636 11 Jun 2018 @ 1019 --- underarockphoto Half inch down
8419 02 Jun 2018 @ 1009 --- JSJ Lemon Spring & Broken Egg Spring both in overflow at 1009.
8399 01 Jun 2018 @ 1843 --- JSJ Lemon Spring in overflow. So was Broken Egg Spring.
7803 31 Oct 2017 @ 1335 --- udo In overflow.
7785 28 Oct 2017 @ 1018 --- udo In overflow.
7777 26 Oct 2017 @ 0922 --- udo About 9 inches below overflow.
6376 15 Sep 2017 @ 0711 --- TSBryan 1 inch below overflow
6331 13 Sep 2017 @ 0657 --- TSBryan Full and (for it) in heavy overflow.
6074 09 Sep 2017 @ 0953 --- udo Not overflowing. About an inch below overflow level.
5178 20 Aug 2017 @ 1924 --- CrisG in overflow
4501 19 Jul 2017 @ 1343 --- udo Not overflowing
4398 02 Jul 2017 @ 1054 --- udo Water level nearly 2 feet below overflow.
4386 01 Jul 2017 @ 1557 --- WillBoekel about 1 foot below overflow
4311 13 Jun 2017 @ 0625 --- LynnS Down about 10-12" below overflow. Water clear blue.
4303 12 Jun 2017 @ 0800 --- LynnS About 6" below overflow; water clear blue
4211 04 Jun 2017 @ 1436 --- LynnS Lemon Spring was about 12-15 inches below overflow; water was clear and blue.
4212 31 May 2017 @ 1509 --- LynnS Water level was about 12-15" below overflow; clear and blue in color; not murky.
3663 12 Sep 2016 @ 1039 --- Kent In overflow
3294 12 Jul 2016 @ 0910 --- udo in overflow
2605 01 Nov 2015 @ 1515 --- udo Overflowing
2603 01 Nov 2015 @ 1414 --- udo About 1/2 inch below overflow.
2601 01 Nov 2015 @ 1047 --- udo Down about 6 inches below overflow.
2598 01 Nov 2015 @ 0838 --- WillBoekel about a foot down
2535 11 Oct 2015 @ 1004 --- Siegmund Quiet overflow. Same 1452, 1537.
2508 10 Oct 2015 @ 1547 --- Maureen Was down over 6".
2507 10 Oct 2015 @ 1534 --- Siegmund Heavy overflow, superheated upwelling in center of pool, white flashes at bottom of pool. But never quite managed to have a real burst.
2506 10 Oct 2015 @ 1204 --- Siegmund Quiet, slight overflow. Same again at 1219 and 1440.
2204 29 Aug 2015 @ 0851 --- udo Pool level is down about 4 inches.
2017 04 Aug 2015 @ 0957 --- RyanMaurer observed to be full
2013 03 Aug 2015 @ 1802 --- Micah Kipple Down 2'
3651 22 Jul 2015 @ 1418 --- LynnS 1418 water level about 8-10 inches below overflow
1952 21 Jul 2015 @ 0530 --- LynnS Lemon Spring was just below overflow at 0530. At 0630 Lemon Spring was in slight overflow. At 0740 Lemon Spring was in full overflow. At 1245 Lemon Spring was just below overflow.
1944 20 Jul 2015 @ 1619 --- LynnS Lemon Spring was full when I drove past at 0550, 0800, and 1200; it was about 15-18 inches below overflow at 1619.
1940 19 Jul 2015 @ 0555 --- LynnS Lemon Spring was full and overflowing at 0555, 0730. At 1356 it was down about 15-18 inches.
1903 13 Jul 2015 @ 0555 13 Jul 2015 @ 1510 LynnS Lemon Spring was full the first time I drove through Firehole Lake Drive at 0555. At 0737 it was down about 10-12 inches. At 0821 it was down about 16-18 inches. At 1509 it was still about 1-2 inches below overflow.
1896 12 Jul 2015 @ 0640 12 Jul 2015 @ 0943 LynnS At 0640 Lemon Spring was down about 6-8 inches below overflow; at 0943 it was still 1-2 inches below overflow.
1892 12 Jul 2015 @ 0837 --- udo Approximately 4 inches below overflow.
1710 09 Jun 2015 @ 1750 --- WillBoekel down about 8" clear
1709 09 Jun 2015 @ 1558 --- WillBoekel down about 12" clear
1691 05 Jun 2015 @ 2105 --- LynnS At 1704 Lemon Spring was about 8-10 inches below overflow.
1674 01 Jun 2015 @ 1730 --- WillBoekel This is only the second time I have seen Lemon Spring well below overflow since the road opened on May 22. I have been driving the road three to five times most days since I have been spending a lot of time watching Gemini and Rejuvenated.
1666 30 May 2015 @ 2059 --- WillBoekel down 1-1.5ft
1942 27 May 2015 @ 1806 --- LynnS Water level about 2 feet below overflow.
1483 03 Nov 2014 @ 0724 --- WillBoekel down about 1 inch at 0724
1484 31 Oct 2014 @ 1420 31 Oct 2014 @ 1928 Kent Lemon spring in overflow @ 1420, down at least 14" at 1732 and still down at least a foot @ 1928 by headlights
1460 20 Oct 2014 @ 0000 20 Oct 2014 @ 2359 Maureen Will fluctuate up to 18 inches down from overflowing, and back up.  Have seen it rise and fall during course of autumn days.
1459 20 Oct 2014 @ 0710 --- WillBoekel down about 2-3 inches at 0710
1936 23 Aug 2014 @ 1426 --- LynnS Down about 6 inches below overflow.
1934 17 Aug 2014 @ 1657 --- LynnS About 1 inch below overflow at 16:57
1094 04 Jul 2014 @ 1607 --- MAB Down about 6' at 1607
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