Last Known Eruption
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Latest Eruptions

Interval Statistics

Not enough entries to compute statistics.

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
15738 26 Aug 2020 @ 1625 --- Janet Jones Empty
14846 02 Jul 2020 @ 0618 --- Graham Water level out of sight.
14095 22 Jan 2020 @ 1532 --- Graham No water in sight but it is steaming lightly.
11105 27 Apr 2019 @ 1246 --- Micah Kipple Full to Brim,
10989 19 Apr 2019 @ 1003 --- udo Water level 4-5 inches below rim
10782 25 Dec 2018 @ 1024 --- Janet Jones Water level just below the rim top.
10682 29 Oct 2018 @ 1240 --- udo about 4 inches below overflow
10655 20 Oct 2018 @ 1414 --- Janet Jones An inch below overflow
10591 08 Oct 2018 @ 1215 --- Micah Kipple Less than an inch from the rim.
10519 01 Oct 2018 @ 1707 --- Micah Kipple Water an inch within rim.
10382 19 Sep 2018 @ 1022 --- Siegmund ~10cm below overflow
10287 18 Sep 2018 @ 1515 --- udo Dropped to about 5 inches below overflow.
10279 18 Sep 2018 @ 1032 --- udo Down about 3 inches below overflow.
10245 16 Sep 2018 @ 0704 --- steve Full and overflowing
10229 15 Sep 2018 @ 2150 --- Micah Kipple Water several inches down.
9114 10 Jul 2018 @ 1402 --- udo No water visible.
8100 04 May 2018 @ 1146 --- Janet Jones 3" below overflow.
7989 22 Apr 2018 @ 1012 --- udo Slightly below overflow, full.
7796 29 Oct 2017 @ 1045 --- adamdanski12 Spring is less than a centimeter below overflow.
7789 28 Oct 2017 @ 1130 --- udo About 3 inches below overflow
5783 03 Sep 2017 @ 1211 --- Janet Jones No water visible.
5485 28 Aug 2017 @ 0930 28 Aug 2017 @ 1532 udo No water visible from boardwalk.
5302 24 Aug 2017 @ 1010 --- udo Steaming but with no visible water.
5165 20 Aug 2017 @ 1032 --- Biddle Completely Empty, only light steam.
4499 19 Jul 2017 @ 1117 --- udo No water visible from b'walk.
4351 23 Jun 2017 @ 0839 --- udo No visible water.
4145 28 May 2017 @ 1038 --- WillBoekel water down. almost out of sight
3851 05 Nov 2016 @ 1351 --- udo In overflow
3853 05 Nov 2016 @ 1126 --- Janet Jones Full, but not overflowing
3721 26 Sep 2016 @ 1233 --- udo Very low, about 6 inches below overflow.
3698 20 Sep 2016 @ 1752 --- Janet Jones Down 4-5"
3510 19 Aug 2016 @ 0955 --- mhreed Two inches below overflow.
3100 20 Jun 2016 @ 1238 --- WillBoekel about 1 inch below overflow.
2908 28 May 2016 @ 1550 --- WillBoekel down about 1 inch
2798 29 Apr 2016 @ 1424 --- Siegmund Slight overflow toward boardwalk
2760 20 Apr 2016 @ 0943 --- udo 1" below overflow.
2730 15 Apr 2016 @ 2022 --- WillBoekel about 4 inches below overflow
2725 15 Apr 2016 @ 0936 --- WillBoekel about 0.5 -1 inch below overflow
2686 16 Feb 2016 @ 1037 --- WillBoekel down about 4 inches
2684 14 Feb 2016 @ 1349 --- WillBoekel 1 inch below overflow
2678 12 Feb 2016 @ 0929 --- WillBoekel full and slightly overflowing
2550 15 Oct 2015 @ 1048 --- udo No water visible
2518 11 Oct 2015 @ 1009 --- mhreed Water just barely visible.
2495 09 Oct 2015 @ 1720 --- mhreed No water visible from the boardwalk.
2174 22 Aug 2015 @ 0915 --- WillBoekel down about 3-4 inches
1476 31 Oct 2014 @ 1332 --- Janet Jones 1332 - Arrowhead had recently overflowed some down the mound on which it sits.
1211 09 Sep 2014 @ 1027 --- WillBoekel Full and overflowing. at 1027
1164 31 Aug 2014 @ 1200 --- WillBoekel ~1 inch below overflow at noon
1162 30 Aug 2014 @ 1709 --- WillBoekel at overflow 1709
1062 06 May 2014 @ 1744 --- WillBoekel Water 4-5" down at 1744
1058 03 May 2014 @ 2020 --- WillBoekel 2020 no water visible
5575 20 Aug 1992 @ 0000 20 Aug 1992 @ 2359 JarnoO Water dropped 4 inches today, recovered 8/21/1992
7572 14 Apr 1988 @ 1800 --- research-mab 4-14-88 Arrowhead Springs has had recent major eruption with much wash to NE & East & with 788 rocks (~90kg) removed.{no specifc time noted}
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