| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 17950 |
18 Jun 2021 @ 1200 |
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LynnS |
Visitor report (paramedic stationed at Madison and her husband) they had seen Green Spring erupt when the recently visited Black Sand Basin. |
| 10477 |
27 Sep 2018 @ 0835 |
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Micah Kipple |
Constantly boiling up to 3-5 inches over vent. |
| 4277 |
08 Jun 2017 @ 1722 |
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JSJ |
Small spouter at southeastern corner of pool is off. Not in to-the-north overflow. |
| 4261 |
07 Jun 2017 @ 1638 |
07 Jun 2017 @ 1826 |
JSJ |
Continuous low spouting from a vent at the southeastern corner of the pool (filmed). Intermittent, slight to moderate roiling from a vent just south of the northern submerged shelf. In slight overflow to the north at 1638 - already done at 1653 (but still overflowing via the western runoff channel). Resumed to-the-north overflow at 1727 (near start); degree of overflow varied from slight trickling to heavier. Overflow also on the eastern side of the pool, using two slight breaches in the sinter border. To-the-north overflow done at 1745. In slight to-the-east overflow at 1819 through one breach only. First noticeable to-the-north overflow at latest 1825 - helped by the wind. Closed interval for the beginning of to-the-north overflow events = ~58m. |
| 3526 |
22 Aug 2016 @ 0940 |
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Janet Jones |
Had a surge of water that flooded the area by the boardwalk. |
| 3442 |
07 Aug 2016 @ 1403 |
07 Aug 2016 @ 1747 |
JSJ |
Not in to-the-north overflow at 1403. Northern vent gently roiling. In gentle to-the-north overflow at 1422. Not at 1538 & 1634. In to-the-north overflow at 1700, with northern vent gently roiling to low roiling to moderate roiling. Not in to-the-north overflow at 1706, with only gentle roiling from northern vent. Ditto at 1720. In slight to-the-north overflow at 1738, with low to moderately low roiling from northern vent. Good overflow at 1742. Low splash from northern vent at 1742. Overflow occuring along entire spring's border at 1743 to 1745 - the most significant overflow event I've yet seen (Rocco says these are happening about twice a day). Less overflow at 1747. |
| 3429 |
05 Aug 2016 @ 1816 |
05 Aug 2016 @ 1929 |
JSJ |
Green Spring in to-the-north overflow and roiling/very low doming from northern vent. Still doing this at 1843. At 1846, no more to-the-north overflow and only gentle roiling from northern vent. Ditto at 1853. At 1929, slight to-the-north overflow had already resumed & northern vent was slightly roiling. |
| 3343 |
08 Jul 2016 @ 1147 |
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JSJ |
Thermal photography showed a temperature of 146° F. See thermal photo at: https://www.flickr.com/photos/jsjgeology/27785984833 . |
| 3074 |
15 Jun 2016 @ 2000 |
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Rocco Paperiello |
We (Micah Kipple and I) noticed a small amount of "new" wash between Green Spring and the boardwalk this afternoon [06/15/16]. While walking past it a bit later I saw a small 2 foot "bulging burst" over the vent just off the front (north) shelf. It did not put out any significant water. The main runoff channel does not look like any significant amount of water flowed down it. Most of the "activity" appears to be occurring only in the north vent and area of the pool.
I have hopes to see a "significant" eruption this summer as I missed all the ones in 2008. |
| 301 |
22 Aug 1973 @ 1000 |
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BoekelUpload |
Green Spring 10:00; hvy overflow |