Hilary McMillan

Hilary McMillan

@mcmillanhydro.bsky.social

Professor of Water Resources at San Diego State University. Watershed hydrology and hydrological processes.

1,008 Followers 623 Following 42 Posts Joined Sep 2023
1 week ago
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Kākāpō Cam: Live from the nest Watch Rakiura, a female kākāpō, live from her nest on Whenua Hou/Codfish Island, a small, predator free island in southern New Zealand.

kakapo chick feeding live! www.doc.govt.nz/our-work/kak...

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1 month ago

Same as it ever was.

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1 month ago

Thanks for the share - and here's a link to view the article: rdcu.be/eXM3l

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2 months ago

One final reminder!

Bettina Schaefli and I warmly invite you to submit abstracts to a new EGU session

A strong focus on theory in times of big data

HS2.2.5 New Developments in Hydrological Synthesis
Abstract submission: www.egu26.eu/session/55911

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2 months ago
Image of river protection status in the United States

National assessment of river protection in the U.S.

Article: doi.org/10.1038/s418...
Policy Brief: doi.org/10.1038/s418...
Rivers Explorer: map.myriver.americanrivers.org

Collaboration b/t American Rivers, Conservation Science Partners, Univ WA @americanrivers.bsky.social

Thread 👇 | DM for PDF

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2 months ago

I wrote a commentary discussing Daniele's huge new global synthesis of controls on hydrological processes in forested catchments: read it here: rdcu.be/eXTrq . Some surprising findings on the importance of overland flow, soils and antecedent conditions.

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2 months ago
Map of the Plynlimon catchments, streams, and the monitoring sites in this dataset
© - UKCEH

When did hydrologists become historians? #FDRI has released 35 years of hi-res data from the Plynlimon Research Catchments!

Read about our process of unearthing 35 years of measurements and what it means for understanding river processes: https://f.mtr.cool/grqzmwiqsd 🧪

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2 months ago
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Bike commute! 💙

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2 months ago
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@rarakihydro.bsky.social leads an exiting new preprint that maps dominant hydrologic processes across >14k US watersheds using streamflow signatures + ML. It’s been such fun following Ryoko and Hilary’s leadership alongside Admin, Anne and Gemma.

egusphere.copernicus.org/preprints/20...

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3 months ago
Ad flyer listing presentations from McMillan Hydrology Lab for AGU25 conference

💧 Check out McMillan lab research at #AGU25! @mcmillanhydro.bsky.social. Shoutout to @alessing26.bsky.social for the cute flyer!

💧 Visit runoff generation processes poster session on Monday PM by @aliva-nanda.bsky.social, @nitinsingh.bsky.social, @kjmcguire.bsky.social, Bryn Stewart and me!

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10 months ago
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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

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11 months ago

Thank you for featuring our paper, and for all your work on Hydrology Paper of the Day!

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11 months ago

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.

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11 months ago
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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...

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. 👇

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11 months ago
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GitHub - RY4GIT/perceptual-models: Repository for the perceptual model database and interactive map Repository for the perceptual model database and interactive map - RY4GIT/perceptual-models

Yes! Find the link to the interactive map at github.com/RY4GIT/perce.... CUAHSI is making a new map with download capability at hydroprocess.cuahsi.io, but there are still a few teething troubles so you can also see our legacy GIS map (same info, no download) sdsugeo.maps.arcgis.com/apps/dashboa...

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11 months ago
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Climate and landscape drive catchment hydrological processes at the global scale - Nature Water Understanding catchment hydrological functioning across the world is critical to providing theoretical support for large-domain model applications. A global assessment of catchment perceptual models r...

Accompanied by an excellent commentary from Daniele Penna, www.nature.com/articles/s44...

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11 months ago
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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...

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...

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11 months ago
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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!

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11 months ago

Thank you John for highlighting our work!

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11 months ago
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Quantifying Sources, Sinks and Mitigation of Macroplastic and Other River Debris: A Trash Balance Model We developed a holistic model of riverine macroplastic and debris sources, sinks and transport dynamics for urban rivers Much more debris is directly deposited on the floodplain by dumping and ab...

Where does macroplastic pollution in rivers come from? In urban San Diego, most is dumped directly in the river corridor. Volunteer clean up efforts are essential, but plastic stored in the river keeps increasing. Paper from MS student TJ Palmer agupubs.onlinelibrary.wiley.com/doi/full/10....

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11 months ago

Hope to see CSU students at this meeting! I will be attending alongside graduate students from SDSU Geography

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1 year ago
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A First-Time Attendee’s Guide to the 2025 Catchment Science Gordon Research Seminar (GRS) and Conference (GRC) Written by Ally Jacoby When I first heard the Gordon Research Conference on Catchment Science described as ‘hydrology summer camp’, I was immediately sold on going. I attended for the first time in…

Are you a graduate student or postdoc interested in the GRS/GRC Catchment hydrology conferences this June? GRS Chair Ally Jacoby has just published this first-time attendees guide! younghs.com/2025/03/03/a...

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1 year ago

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.

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1 year ago
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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...

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1 year ago

I'm really looking forward to this talk!

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1 year ago

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.”

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1 year ago

“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]

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1 year ago

The research discussed was cutting edge and diverse but presented in a way so that scientists of all niches could understand.”

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1 year ago

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]

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