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rivers

Mekong River in Laos
Posted inNews

Where Did All the Free-Flowing Rivers Go?

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 8 May 201927 April 2022

A map of the world’s free-flowing rivers shows a shrinking number can still meander as they please. New plans for hydropower will further constrain flow.

Simulated depths around Tuting village
Posted inEditors' Highlights

Enabling Dynamic, Regional-Scale Modelling of Outburst Floods

by Mikaël Attal 7 May 201924 February 2022

The GeoClaw model is used to simulate a landslide-dam outburst flood through rugged Himalayan topography.

A stream flowing down a valley
Posted inResearch Spotlights

Modeling River Boulders to Improve Hydropower Sustainability

Aaron Sidder, freelance science writer by Aaron Sidder 30 April 20199 March 2023

Large stones in streams provide crucial habitat for fish. Modeling the boulders and streamflow offers fresh insights into how water engineering projects alter aquatic habitats.

Tracers of ecosystem respiration
Posted inResearch Spotlights

Understanding Stream Metabolism with Reactive Tracers

Aaron Sidder, freelance science writer by Aaron Sidder 29 April 20197 March 2022

When the blue dye resazurin encounters living microorganisms, it transforms into fluorescent pink resorufin and helps scientists understand ecosystem respiration, but it has its limitations.

Scientists collect water samples in Antarctica.
Posted inResearch Spotlights

Antarctica’s Seasonal Streams Contribute Iron to the Ross Sea

by Terri Cook 22 April 201925 August 2022

Analysis of nutrient concentrations in four streams that discharge to the Southern Ocean indicates they are important sources of iron and phosphorous for coastal phytoplankton communities.

The Yellow River rushes over the Hukou Waterfall in China
Posted inResearch Spotlights

Through Flood and Drought: Reconstructing the Yellow River

Aaron Sidder, freelance science writer by Aaron Sidder 4 April 201915 October 2021

Tree ring chronologies fill in gaps in the historical record and offer insights into the natural flow of China’s Yellow River.

A delta channel from a large ancient delta extends into the Barents Sea
Posted inNews

Largest Delta Plain in Earth’s History Discovered in Arctic

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 1 April 201919 September 2023

If this Triassic period delta existed today, its footprint would equal about 1% of all land on Earth.

Electric lights illuminate the Nile and its delta in this satellite image captured at night.
Posted inFeatures

The Renaissance of Hydrology

by V. Gabrielle 28 March 201927 October 2022

Hydrology has evolved as a transdisciplinary, data-driven science in a remarkably short period of time.

eastern-mediterranean-map
Posted inNews

Ancient River Discovery Confirms Mediterranean Nearly Dried Up in the Miocene

Mara Johnson-Groh, Science Writer by Mara Johnson-Groh 25 March 201931 May 2023

Sedimentary deposits reveal a Nile-sized river system flowing from what are today Turkey and Syria.

An aerial view of Waquoit Bay, a shallow estuary on Cape Cod, Mass.
Posted inResearch Spotlights

When the River Meets the Sea: Estuary Sediments and Hypoxia

Elizabeth Thompson by Elizabeth Thompson 20 March 201921 March 2022

Scientists know that low-oxygen dead zones are growing worldwide. New research sheds light on what that will mean for estuary systems if trends continue.

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Features from AGU Publications

Research Spotlights

More Bubbles Means More Variation in Ocean Carbon Storage

8 July 20258 July 2025
Editors' Highlights

Defining the Tropopause in Chemical Transport Models

8 July 20258 July 2025
Editors' Vox

Water Tracks: The Veins of Thawing Landscapes

25 June 202525 June 2025
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