Hilary McMillan
@mcmillanhydro.bsky.social
970 followers 600 following 39 posts
Professor of Water Resources at San Diego State University. Watershed hydrology and hydrological processes.
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Reposted by Hilary McMillan
drewbrayshaw.bsky.social
How about some real actual hydrology? 🌊
West Kettle River near Rhone
Sep 2 2021 ~ 0.53 m3/s typical late season low flow
Apr 20 2025 ~53 m3/s ramping up to Q2 at start of freshet
mcmillanhydro.bsky.social
Thank you for featuring our paper, and for all your work on Hydrology Paper of the Day!
Reposted by Hilary McMillan
kinarnicholas.bsky.social
Hydrology Paper of the Day @iflscience.com on weird hydrology: rivers that flow in different drainage basins; why some rivers flow in two directions or have a reversed direction of flow; a lake that drains into two oceans; river capture and geological controls; modelling; and management challenges.
iflscience.com
In a new study, scientists have reviewed nine rivers and lakes in the Americas that appear at first to break away from the conventional rules of hydrology.

www.iflscience.com/scientists-s...
Scientists Spot Rivers That Are "Hydrologic Equivalent Of A Wormhole Between Two Galaxies"
These rivers at first seem to defy the rules of hydrology.
www.iflscience.com
Reposted by Hilary McMillan
hs.egu.eu
OUT NOW: A fantastic new read for hydrologists 📚: a wrap-up of the Panta Rhei scientific decade of @iahs-aish.bsky.social. Between 2013 and 2022, it explored links between changes in hydrology and society. 🌍 In this paper, Heidi Kreibich and her colleagues present ten years of progress. 👇
Panta Rhei: a decade of progress in research on change in hydrology and society
To better understand the increasing human impact on the water cycle and the feedbacks between hydrology and society, the International Association of Hydrological Sciences (IAHS) organized the scie...
www.tandfonline.com
mcmillanhydro.bsky.social
New paper! After much work by me and my students we created a global database of hundreds of research watersheds, and perceptual models of their hydrologic processes. We use the data to test classic theories on how climate and landscape control dominant processes. www.nature.com/articles/s44...
Global patterns in observed hydrologic processes - Nature Water
This study presents a global, searchable database of 400 research watersheds with published descriptions of dominant hydrologic flow pathways, supporting efficient hypothesis testing to investigate em...
www.nature.com
Reposted by Hilary McMillan
danielepenna.bsky.social
Today we were in the Re della Pietra #catchment
danielepenna.wixsite.com/redellapietra.
We installed a new #weather station and showed the site to some private #stakeholders.

And this little paper came out right today.
rdcu.be/efM8w
Congrats @mcmillanhydro.bsky.social and coauthors!
mcmillanhydro.bsky.social
Hope to see CSU students at this meeting! I will be attending alongside graduate students from SDSU Geography
csucoast.bsky.social
Hey CSU grad students-deadline to submit your abstract to the #GordonResearchConference is March 16! #GRC is an amazing meeting, you should go!!! #sciencerocks #hydrology #biology #geochemistry #calstate
mcmillanhydro.bsky.social
Remember to apply and register for this summer's Catchment Science GRC! The best conference you'll ever go to. Deadlines coming up on March 16 for graduate students to submit their oral abstracts to the GRS.
www.grc.org/catchment-sc...
Reposted by Hilary McMillan
kinarnicholas.bsky.social
Hydrology Paper of the Day @rarakihydro.bsky.social on how soil moisture metrics and observations improve the outputs of a rainfall-runoff model: evaluation of model performance with hydrologic signatures; application to watersheds in New Zealand and the US; partitioning; and calibration.
rarakihydro.bsky.social
My 1st PhD chapter is (finally) out! 🥳

We have tested soil moisture as an objective metric in a Next-Gen rainfall-runoff model—a Conceptual Functional Equivalent (CFE) of WRF-Hydro.

Thank you my mentor @mcmillanhydro.bsky.social and Dr. Fred Ogden for their guidance!

doi.org/10.1111/1752...
Reposted by Hilary McMillan
lireactivewater.bsky.social
Talk abstracts for Catchment Science Gordon Research Seminar (GRS) before GRC are due on 3/15/25. Submit early for a talk! Exciting venue for science + networking for early careers!

Keynote speaker Dr Ryan Emanuel on Environmental Justice. @waterpotential.bsky.social

www.grc.org/catchment-sc...
mcmillanhydro.bsky.social
I'm really looking forward to this talk!
waterpotential.bsky.social
I’m excited to be the keynote speaker for this summer’s Gordon Research Seminar on Catchment Science! I’ve never attended a Gordon Conference before, and the early career seminar seems like a great opportunity for grad students and postdocs. Check it out!
#EnvironmentalJustice
lireactivewater.bsky.social
Talk abstracts for Catchment Science Gordon Research Seminar (GRS) before GRC are due on 3/15/25. Submit early for a talk! Exciting venue for science + networking for early careers!

Keynote speaker Dr Ryan Emanuel on Environmental Justice. @waterpotential.bsky.social

www.grc.org/catchment-sc...
mcmillanhydro.bsky.social
This was also my first time bringing students to this meeting and they had an amazing time feeling welcomed by the field and getting to meet other senior scientists. I am already excited for next time.”
mcmillanhydro.bsky.social
“This is my absolute favorite conference and this year was amazing - incredible set of talks and a great way to re-energize about my science and network after COVID. [cont]
mcmillanhydro.bsky.social
The research discussed was cutting edge and diverse but presented in a way so that scientists of all niches could understand.”
mcmillanhydro.bsky.social
See these quotes from last time: “This was the best conference I have ever been to. I have never been able to get to know so many other scientists so well and have such stimulating discussion and great feedback on my research. [cont]
mcmillanhydro.bsky.social
Remember to apply and register for this summer's Catchment Science GRC! The best conference you'll ever go to. Deadlines coming up on March 16 for graduate students to submit their oral abstracts to the GRS.
www.grc.org/catchment-sc...
Poster advertising GRC Catchment Science Conference, dates 22-27 June 2025, and accompanying GRS conference for Young Researchers 21-22 June 2025.
Reposted by Hilary McMillan
rarakihydro.bsky.social
My 1st PhD chapter is (finally) out! 🥳

We have tested soil moisture as an objective metric in a Next-Gen rainfall-runoff model—a Conceptual Functional Equivalent (CFE) of WRF-Hydro.

Thank you my mentor @mcmillanhydro.bsky.social and Dr. Fred Ogden for their guidance!

doi.org/10.1111/1752...
mcmillanhydro.bsky.social
Amongst all of this, our students are still publishing excellent papers. My recent Masters student Annie Holt, now at NWS, shows how geologic age and (region-dependent) wetland fraction metrics can be used to improve our predictions of baseflow in watersheds across the U.S.: doi.org/10.1002/hyp....
New Predictors for Hydrologic Signatures: Wetlands and Geologic Age Across Continental Scales
This article contributes to the longstanding effort to use landscape metrics to predict streamflow dynamics. We introduce two new metrics describing wetlands and geologic age and use random forests t....
doi.org
Reposted by Hilary McMillan
mcmillanhydro.bsky.social
Thanks for your interest. Yes, here we are looking at rivers rather than lakes or oceans