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Posts by Hilary McMillan

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You need to make AI guidelines for your lab Here's why you should, and how to start

"The struggle of figuring out the right analysis approach, wrestling with an unexpected result, or trying to turn a messy set of findings into a coherent story is not an obstacle to learning. It _is_ the learning".

Required reading for AI in the lab:

blekhman.substack.com/p/you-need-t...

2 weeks ago 47 17 1 1
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Identifying Headwater Streams across the Conterminous United States - Ecosystems Headwater streams play critical roles in hydrologic and biogeochemical processes and functions, yet their spatial distribution and land cover context remain poorly understood at continental scales, an...

New analysis in ECOSYSTEMS identifies all headwater streams of continental U.S.; 77% of U.S. network is headwater streams.
doi.org/10.1007/s100... @monicagturner.bsky.social

2 weeks ago 16 7 1 0
A small valley filled with water that spreads across the entire valley floor.

A small valley filled with water that spreads across the entire valley floor.

Same valley as the other photo, with no water visible at all. The grass in the middle of the valley is flattened and has some mud on it.

Same valley as the other photo, with no water visible at all. The grass in the middle of the valley is flattened and has some mud on it.

An ephemeral stream valley, southwestern Nebraska, after heavy rain (left) and four days later. View upstream.

1 month ago 32 9 4 1
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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...

1 month ago 14 5 0 0

Same as it ever was.

2 months ago 173 24 6 0

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

2 months ago 5 2 0 1

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

3 months ago 3 1 0 0
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Image of river protection status in the United States

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

3 months ago 39 25 1 0

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.

3 months ago 18 4 1 0
Map of the Plynlimon catchments, streams, and the monitoring sites in this dataset
© - UKCEH

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 🧪

3 months ago 21 10 2 1
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Bike commute! 💙

3 months ago 3 0 0 0
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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...

4 months ago 15 6 1 0
Ad flyer listing presentations from McMillan Hydrology Lab for AGU25 conference

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!

4 months ago 7 2 0 0
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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

1 year ago 11 2 0 0
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Thank you for featuring our paper, and for all your work on Hydrology Paper of the Day!

1 year ago 3 1 1 0

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.

1 year ago 19 5 0 0
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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. 👇

1 year ago 15 11 0 2
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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...

1 year ago 4 0 0 0
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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...

1 year ago 7 1 0 0
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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...

1 year ago 45 13 4 3
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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!

1 year ago 8 2 1 0

Thank you John for highlighting our work!

1 year ago 4 0 0 0
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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....

1 year ago 8 2 0 0

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

1 year ago 3 0 0 0
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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...

1 year ago 11 6 0 0

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.

1 year ago 12 2 1 0
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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...

1 year ago 8 2 0 1

I'm really looking forward to this talk!

1 year ago 2 0 0 0

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.”

1 year ago 0 0 0 0