Geyser Watch

 An Online Field Journal at


Watching water go the other way…

as well as many more not-quite-so-exciting thermal features of Yellowstone.


GeyserWatch is moving here – lots of changes happening this year!

Thanks for your patience as we shuffle things around. You can still head over to the old site:



Abyss Pool Heating Up – July 2017

Just a quick post here to share some comparison photos of the heating up of Abyss Pool at West Thumb Geyser Basin. While there haven't been any reports of "Waterfall Geyser" in quite awhile, it seems the whole geyser basin is just slowly heating up. Which thermal...

Upper Geyser Basin Late June 2017

I recently spent three nights in the Old Faithful area and four delightful days spent taking notes on what I saw and visiting with friends. While I still need to go through more files, I'm starting to take more of the approach I do to scrapbooking and just find...

Watching Ledge Spring Erupt

Ledge Spring is one of the thermal features at West Thumb that has benefited from the energy increase that started last August with the appearance of "Waterfall Geyser." In just a few days, this spring when from lower water and a crater lined with brown microbes to...

An excellent video by Yellowstone National Park Service