⏰ 1 day left to save on conference registration for #GWM2 at Princeton! Early bird pricing ends May 15th — short course registration is also open at regular pricing. Don't wait! igwmc.princeton.edu/groundwater-... @reedh2o.bsky.social

#GWM2 Mini Conference Highlight: 12th International Conference on the Analytic Element Method Learn about pricing, registration, and more: igwmc.princeton.edu/groundwater-... #Groundwater #Hydrology @reedh2o.bsky.social

#GWM2 Short Course Highlight: Integrated Simulation Of Watershed Systems Using ParFlow and Subsetting Using HydroFrame and Hydrodata: ParFlow Short Course Extension For more: igwmc.princeton.edu/groundwater-... #Groundwater #Hydrology @reedh2o.bsky.social

💧 Led by Princeton's @reedh2o.bsky.social and @uarizona.bsky.social's Laura Condon, a new, highly-detailed map shows how much groundwater lies beneath our feet throughout the United States.

It was awesome talking with Ian about our recent work modeling groundwater and estimating freshwater over the US.

Ian James@ianjames.bsky.social · 4mo ago

How much water lies beneath our feet? After years of research, scientists have an answer, and a new, detailed national map of groundwater. I spoke with @reedh2o.bsky.social of @princeton.edu and Laura Condon of @uarizona.bsky.social about their fascinating research: www.latimes.com/environment/...

How much water lies beneath our feet? After years of research, scientists have an answer, and a detailed national map of groundwater. I spoke with @reedh2o.bsky.social of @princeton.edu and Laura Condon of @uarizona.bsky.social about their fascinating research: www.latimes.com/environment/...

Thanks for the shout out!

KinarNicholas.bsky.social@kinarnicholas.bsky.social · 5mo ago

Hydrology Paper of the Day @reedh2o.bsky.social on how machine learning can estimate a map of water table depth at 30 m resolution: spatial variability in the context of water management; barriers and abundances; the need for appropriate observations; and understanding sparse dataset uncertainties.

Abstracts are hard. We get it. 😅 Plot twist: 1 more week! 🎉 New deadline: March 10, 11:59pm EST Don’t let your idea be the one that got away — submit for #GWM2: igwmc.princeton.edu/groundwater-... #Groundwater #Hydrology @reedh2o.bsky.social

Registration opens next week for #GWM2 Conference & Short Courses! 💧 Explore this year’s offerings and strengthen your groundwater modeling skills. For more details: igwmc.princeton.edu/groundwater-... #Groundwater #Hydrology #Modeling @reedh2o.bsky.social

⏰ 3 weeks left to submit abstracts for Groundwater Modeling and More 2026: From Raindrop to Reservoir! 📍 Princeton University | June 7–10, 2026 🗓️ Abstracts close March 3, 2026 (5pm EST) 🔗 igwmc.princeton.edu/groundwater-... #GWM2 @reedh2o.bsky.social

"You always think the closest water is like a lake or a river or stream, but the closest water is beneath your feet." Princeton's @reedh2o.bsky.social talks about new research that maps out groundwater below the surface — a vital tool during times of drought.

Scientists create the most detailed groundwater map yet — with big implications for the West

As much of the Mountain West faces another dry winter, researchers are turning their attention underground to the water many communities rely on but rarely see.

kunr.org

If surface water is our checking account and groundwater is our all-important savings account, "we don’t know how much is in our savings account,” said @reedh2o.bsky.social. Now, he and his colleagues have developed an estimate. eos.org/articles/rep...

Report: 13 Great Lakes’ Worth of Water Underlies the Contiguous United States - Eos

Researchers used 1 million data points and a machine learning algorithm to estimate groundwater stores with higher resolution than ever before.

eos.org

That’s 13 times the volume of all the Great Lakes combined. eos.org/articles/rep...

Report: 13 Great Lakes’ Worth of Water Underlies the Contiguous United States - Eos

Researchers used 1 million data points and a machine learning algorithm to estimate groundwater stores with higher resolution than ever before.

eos.org

Abstract submission is now open for Groundwater Modeling and More 2026: From Raindrop to Reservoir. 📍 Princeton University | June 7–10, 2026 🗓️ Deadline: March 3, 2026 (5pm EST) 🔗 event.fourwaves.com/gmm26/pages @reedh2o.bsky.social

For all we know about the planet, we still don't really know how much freshwater we have. Surface water? About 1% of the total. The rest is groundwater — varying wildly over short distances, poorly observed, hard to model.

🎲🌋 Games for Geoscience at #EGU26! Session EOS1.3 highlights games and gamified approaches to geoscience teaching and learning. Abstract submissions close Jan 15 — submit yours today! 🔗 games4geoscience.wordpress.com/egu-games-day/ @reedh2o.bsky.social @egu.eu

AGU 25 — IGWMC edition 🌎 Posters, talks, #hydrology, #machinelearning, community, and lots of great conversations. So grateful for everyone who made this week what it was. Already looking ahead to doing it all again at AGU 26! #AGU25 @reedh2o.bsky.social @agu.org

Save the date! 📅 Join us for Groundwater Modeling and More 2026: From Raindrop to Reservoir, June 7–10, 2026 at Princeton University. A refreshed name, new formats, and longstanding traditions. More details coming soon! @reedh2o.bsky.social

Thanks so much for entrusting me to kick off #USRSE25! What a great conference and a super engaged audience. So much fun

US Research Software Engineer Association (US-RSE)@us-rse.bsky.social · 10mo ago

Keynote Spotlight: Dr. Reed Maxwell We’re excited to welcome Prof. @reedh2o.bsky.social (Princeton University) as the keynote speaker at #USRSE25! 🔗 Visit us-rse.org/usrse25/ to learn about the full program and our fantastic sponsors #USRSE #ResearchSoftware #Community #Conference #OpenScience #RSE

What’s an aquifer? It’s layers of rock or sediment that hold and move water underground —like a hidden reservoir beneath our feet. We demo this with both a physical & virtual model for outreach events. Curious? Ask us more! #Groundwater #Hydrology @reedh2o.bsky.social

💧 Water science has a language all its own. Here’s a quick look at some essential hydrology terms—perfect for students, educators, and water nerds alike. #Hydrology #WaterScience 🔁 Repost to help folks learn the lingo! @reedh2o.bsky.social

💧 #FunFactFriday 💧 Billions of people rely on groundwater every day—but most don’t even know it! 💧🌍 Do you know where your water comes from? 👇 #WaterFacts #Hydrology @reedh2o.bsky.social

Discussions are beginning around a possible MODFLOW & More Conference in 2026.💧We’d love your input as we consider options. Please take a few minutes to complete our short survey: igwmc.princeton.edu/modflow-2026... Also, check out 2024 highlights + past short course info @reedh2o.bsky.social

IGWMC led a hydrology unit for QUEST teachers last week! 💧 Participants learned how Earth’s water is distributed through the #Freshwater #Saltwater Challenge, then used #aquifer models to explore groundwater flow and aquifer types. @reedh2o.bsky.social

Students took on Water and Climate Week at @thewatershedinstitute —exploring #hydrology, #modeling, #ML, #coastalhydrology & #SciComm. The week ended with climate art inspired by places they love. @reedh2o.bsky.social

Ever wondered how hydrologists observe water movement over time? A hydrograph shows streamflow changes from rain, snowmelt, and more. We use them to study floods, seasonality, and how water moves through landscapes. #Hydrology #Groundwater #Hydrograph @reedh2o.bsky.social

As groundwater flows through layers of soil and rock, those materials help filter out impurities. 💧⏳ That’s why water from aquifers often needs less treatment than surface water. What’s a cool science fact you love? Drop it below! ⬇️ #FunFactFriday #WaterScience @reedh2o.bsky.social

We were so excited to be invited to facilitate Mole Day at Foundations Academy Charter School on June 2! Students explored water science through aquifer models, crafting water cycle bracelets, and taking the freshwater challenge.💧 #STEM #WaterEducation #MoleDay @reedh2o.bsky.social

US climate scientists need all the help they can get. Including from foul-mouthed comedians! 🤡😱😱 Watch Emmy Award-Winning David Cross team up with Prof Michael Oppenheimer in the US launch of the hit series "Climate Science Translated". #climate #arresteddevelopment #climatescience

We’re sending a big congratulations to 3 graduating undergrads from PU’s Class of 2025! 🎓These 3 have done great work with HMEI and the IGWMC. 👩‍🔬Ashley DeFrates 🌍Brooke Beers 💧 David van Velden We can’t wait to see what’s next! #Princeton25 #Research @acee.princeton.edu ‬ @reedh2o.bsky.social