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rivers

A gif flips back and forth between two images of the Po River Basin. In June 2020, it appears much greener than in June 2022.
Posted inResearch Spotlights

Modeling the Past, Present, and Future of Drought

by Rebecca Owen 18 April 202518 April 2025

A new study combines historical observations, climate modeling, and data from tree rings to create a fuller picture of historic as well as potential drought conditions.

The floor of a foggy forest is covered in orange and brown leaves. In the middle distance, two researchers are taking measurements of a narrow stream.
Posted inResearch Spotlights

The “Surprising” Effect of Drying Headwaters on Nitrogen Dynamics

by Saima May Sidik 15 April 202515 April 2025

Contrary to predictions, spring rains caused a decrease in nitrogen at watershed outflows in Alabama.

A desert landscape with a river valley
Posted inNews

Climate Shifts Drive Episodic Drainage Changes

by Caroline Hasler 14 April 202514 April 2025

Drainage divide migration is influenced by tectonics and climate over long periods. New research in Israel shows that even shorter-term wet-dry cycles can move divides.

Map of a study region and photo of a canoe in a river.
Posted inEditors' Highlights

Strange Branching of Water Flows Through Rivers and Lakes

by Georgia Destouni 8 April 20253 April 2025

Sometimes rivers split into branches in unusual ways, reflecting the complexity of Earth’s water system on land and how much we still must learn about it.

A black-and-white satellite image shows a small river branching off from a larger one.
Posted inResearch Spotlights

The Rivers That Science Says Shouldn’t Exist

by Rebecca Dzombak 1 April 20258 May 2025

At first glance, these waterways make no sense. A new review article details why they are the way they are.

A river surrounded by lush green vegetation is seen from about the height of a tree.
Posted inResearch Spotlights

Seeping Groundwater Can Be a Hidden Source of Greenhouse Gases

Sarah Derouin, Science Writer by Sarah Derouin 28 March 202528 March 2025

A new study in the Farmington River watershed shows that groundwater seeps can release 20% of dissolved emissions into the atmosphere before the water joins streams.

Small boats on a small, drying river
Posted inNews

Brazil’s Rivers Are Leaking

by Sofia Moutinho 28 March 20253 June 2025

Wells overpumping groundwater could be forcing rivers to seep underground, a new study shows. Regions with intensive irrigation activities are at the most risk.

An aerial view of flooding near Bismark, N.D., showing streets, yards, and farmland all underwater.
Posted inResearch Spotlights

What Is Causing the Missouri River Basin’s Elevated Streamflow?

Sarah Derouin, Science Writer by Sarah Derouin 18 March 202518 March 2025

Regional climate variability plays a big role, but reduced forest cover and a rise in atmospheric carbon dioxide are also factors.

Sketches of mountains with distributions of different plants on each.
Posted inEditors' Vox

Topography and the Terrestrial Water Cycle

by Sebastian Gnann, Jane W. Baldwin, Mark O. Cuthbert, Tom Gleeson, Wolfgang Schwanghart and Thorsten Wagener 12 March 202512 March 2025

The relationship between topography and the terrestrial water cycle has been documented for thousands of years, yet there is still much to learn about Earth’s complex dynamics – both above, at, and below the surface.

Photo of Gabura Union, Ganges-Brahmaputra-Meghna Delta.
Posted inEditors' Vox

Asian Megadeltas: Tackling Coastal Flooding Challenges

by Mélanie Becker, Katharina Seeger and Amelie Paszkowski 11 March 202511 March 2025

Integrating scientific insights into current actions is crucial for steering future research directions and underpinning informed management of coastal flooding in Asian deltas.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

Features from AGU Publications

Research Spotlights

An Ecosystem Never Forgets

19 December 202519 December 2025
Editors' Highlights

Frictional Properties of the Nankai Accretionary Prism

11 December 20259 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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