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A hydroelectric dam changed the flow of a California river until millions of fish were forced out of the water in one of the strangest evacuations ever seen

Warren van der Sandt by Warren van der Sandt
April 13, 2026
in Energy
California dam forces fish evacuations

Credits: California Department of Water Resources [Presa] / Credits: Andrew Hughan/CDFW [Peces]

California is no stranger to devastating events, both natural and human-made.

The iconic Golden State has faced many issues over its long and well-documented history. From recent devastating wildfires to a hydroelectric dam failure that forced humans and millions of fish to evacuate the region in a panic, the state has had its fair share of issues.

So how could a dam force one of the strangest evacuations in recent memory?

They built a solar plant across farmland until they discovered endangered species quietly living beneath the panels including a master of disguise and a living fossil”

Decades after the Chernobyl disaster, the Elephant’s Foot is still changing as its structure shifts and releases dangerous radioactive dust

A small bird has taken over a plot of land in India, forcing the suspension of a 10-million-panel solar project

How humanity has evacuated animals to save them

Over our long history, humanity has, at times, shown remarkable ambition to protect the world of animal life that we share the planet with.

Such as the recent initiative that took place in the ravaged nation of Ukraine. Volunteer teams opted to transport hundreds of abandoned and stray animals from the war-torn parts of the nation into safer regions.

And at the drop of a hat, we can come together to save both humans and animals from Mother Nature’s fury as well.

The 1991 volcanic eruption of the Volcán Hudson in Chile forced mass evacuations of both humans and animals. In 2015, an eruption in Costa Rica forced a proactive prevention of loss of life that led to zero animal fatalities.

Saving our planet is paramount to humanity’s future progress

Without the extensive conservation efforts that humanity has undertaken over the past few decades, the world would be far worse off than it is now.

Yes, our impact on the planet’s environment has been severe, to put it mildly. And the world of animal life has been adversely affected by climate change as well. Such as the recent discovery that oyster farmers are seeing their harvest being devastated as parts of the world are literally boiled.

Conservation requires a pragmatic approach where humanity plans years, or even decades, ahead to save the world’s animal life around us.

Studying animal life can help avert serious health risks for humanity as well as other species that rely on us for safety. This has become evident in Mexico recently, as vampire bats may be spreading a fatal disease that affects both humans and livestock.

NOAA Fisheries has detailed an extensive evacuation of both fish and humans that took place in California that beggars belief.

A crisis of biblical proportions led to collaborative efforts to save millions of fish

California has been subjected to many crises over the past few decades.

From the recent wildfires that devastated the state, leading to the USDA proposing to construct more roads around the state to allow for far easier access to wildfires for firefighters. 

The hydroelectric Oroville Dam, which is the tallest dam in the United States at 770 feet, has played a vital role in California’s water infrastructure over its nearly 80-year history.

Constructed in 1961, the dam was fitted with hundreds of instruments to enable state officials to monitor and track water settlement and pressure, leading to the nickname the “Dam That Talks Back”.

The dam helped to reduce peak water flows during the now infamous “Christmas Flood” that nearly devastated the Sacramento Valley in 1964.

A 2017 crisis at the Oroville Dam led to an astonishing evacuation

The crisis led to a high-stakes evacuation operation as millions of fish were evacuated from the Feather River Fish Hatchery. Damaged spillways made the water in the river toxic.

This led to crews using shovels and nets to safely, and more importantly, quickly evacuate the millions of fish from the area.

The unprecedented evacuation proves that the state of California is almost always facing one or another issue, such as the recent tracking of the state’s snowpack that was disappearing months early.

At least we can rely on the state’s residents to drop everything and save not only themselves but also animal life if needed during an emergency.

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