Articles on Rivers

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Curious Kids: why is the sea salty?

The salt in the sea has built up over billions of years – but it wouldn't have got there without freshwater rivers and streams.
Extreme flooding during Hurricane Maria in 2017 was hazardous for the Puerto Rican people. But a new study finds that it helped native fish populations rebound after years of drought. AP Photo/Alvin Baez

Caribbean fish love catastrophic hurricanes

Big storms with lots of flooding, like hurricanes Dorian and Maria, actually restore the Caribbean's delicate balance between native and nonnative fish species, new research finds.
The white “bathtub ring” around Arizona’s Lake Mead (shown on May 31, 2018), which indicates falling water levels, is about 140 feet high. AP Photo/Ross D. Franklin

Western states buy time with a 7-year Colorado River drought plan, but face a hotter, drier future

Western states adopted a 7-year plan in May 2019 to manage low water levels in the Colorado River. Now they need to look farther ahead and accept that there will be less water far into the future.
The San Pedro Mezquital River is the last free-flowing river in Mexico’s western Sierra Madre. Octavio Aburto

Hydropower dams can harm coastal areas far downstream

Thousands of hydropower dams are under construction around the world. New research shows that by cutting off sediment flow, these dams can have big ecological effects on far-off bays and deltas.
A dry river bed in south Australia. (Shutterstock)

How drought affects freshwater fish

Freshwater fish are suffering as drought becomes more common and severe. Whether they survive will depend on how governments manage rivers and lakes, and on taking action against climate change.
Media reports tend to focus on people who drown at the beach. But almost as many people drown in rivers and lakes. Where are the safety messages for them? from www.shutterstock.com

Australia’s spike in summer drownings: what the media misses

Migrants are no more at risk of drowning than Australian-born swimmers but you'd never know from media reports.
Marshes at Blackwater National Wildlife Refuge on Maryland’s Eastern Shore. Ataraxy22/Wikimedia

Protecting the world’s wetlands: 5 essential reads

Marshes, swamps and other kinds of wetlands provide valuable services, such as effective natural flood control. But they are being destroyed for development in many parts of the world.

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