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Beavers were brought to the desert to save a dying river. 6 years later, here are the results.

Their engineering feats are pretty dam incredible.

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Can outsider beavers save this dried up river?

It's not easy being a river in the desert under the best of circumstances. The ecosystem exists in a very delicate balance, allowing water sources to thrive in the harsh conditions. These water sources in otherwise extremely dry areas are vital to the survival of unique wildlife, agriculture, and even tourism as they provide fresh drinking water for the people who live nearby.

But man-made problems like climate change, over-farming, and pollution have made a tough job even tougher in some areas. Rivers in Utah and Colorado that are part of the Colorado River Basin have been barely surviving the extremely harsh drought season. When the riverbeds get too dry, fish and other aquatic creatures die off and the wildfire risk increases dramatically.

About six years ago, one team of researchers had a fascinating idea to restore the health of some of Utah's most vulnerable rivers: Bring in the beavers.

beavers, beaver dam, animals, wildlife, ecosystem, nature, earth, sustainability, deserts, waterways, rivers, pollution, climate change Beaver in water. Photo by Svetozar Cenisev on Unsplash

In 2019, master's student Emma Doden and a team of researchers from Utah State University began a "translocation" project to bring displaced beavers to areas like Utah's Price River, in the hopes of bringing it back to life.

Why beavers? It just makes dam sense! (Sorry.)

Beaver dams restrict the flow of water in some areas of a river, creating ponds and wetlands. In drought-stricken areas, fish and other wildlife can take refuge in the ponds while the rest of the river runs dry, thus riding out the danger until it rains again.

When beavers are present in a watershed, the benefits are unbelievable: Better water quality, healthier fish populations, better nutrient availability, and fewer or less severe wildfires.

It's why beavers have earned the title of "keystone species," or any animal that has a disproportionate impact on the ecosystem around them.

Doden and her team took beavers who were captured or removed from their original homes due to being a "nuisance," interfering with infrastructure, or being in danger, and—after a short period of quarantine—were brought to the Price River.

Despite the research team's best efforts, not all the translocated beavers have survived or stayed put over the years. Some have trouble adapting to their new home and die off or are killed by predators, while others leave of their own accord.

But enough have stayed and built dams since 2019 that the team is starting to see the results of the effort. In fact, beaver projects just like this one have been going on all over the state in recent years.

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The water levels in the river are now the healthiest they've been in years. The fish are thriving. Residents of Utah are overjoyed at the results of the experiment.

A column in The Salt Lake Tribune from 2025 (six years after the beaver translocation began) writes that the revitalization of the Price River "helped save our Utah town."

"A tributary of the Colorado River, the Price River runs through downtown Helper. On a warm day, you’re likely to find the river filled with tourists and locals kayaking, tubing and fishing along its shore. A decade ago, it was hard to imagine this scene—and the thriving recreation economy that comes with it—was possible."

Of course, it wasn't JUST the beavers. Other federal water cleanup investments helped remove debris, break down old and malfunctioning dams, and place tighter regulations on agriculture grazing in the area that depleted vital plant life.

But the experts know that the beavers, and their incredible engineering work, are the real MVPs.

beavers, beaver dam, animals, wildlife, ecosystem, nature, earth, sustainability, deserts, waterways, rivers, pollution, climate change An actual beaver dam on the now-thriving Price RiverPublic Domain

In other drying, struggling rivers in the area, researchers are bringing in beavers and even creating manmade beaver dams. They're hoping that the critters will take over the job as the rivers get healthier.

Utah's San Rafael river, which is in bleak condition, is a prime candidate. In on area of the river, a natural flood inspired a host of beavers to return to the area and "riparian habitat along that stretch had increased by 230%, and it had the most diverse flow patterns of anywhere on the river," according to KUER.

It's hard to believe that beavers nearly went extinct during the heyday of the fur trapping industry, and continued to struggle as they were considered nuisances and pests. Now, they're getting the respect they deserve as engineer marvels, and their populations have rebounded due to better PR and conservation programs.

To that I say...it's about dam time!

This article originally appeared in June.

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What everyone heartbroken over the 'Planet Earth II' turtle episode should know.

On Dec. 11, 2016, animal lovers sat in front of their TVs, devastated at what they saw on the screens in front of them.

It had to do with baby turtles.

"Planet Earth II" — the sequel to BBC's 2006 mega-hit series "Planet Earth" — had documented Hawksbill turtle hatchlings in Barbados.

The series, which aired in the U.K. and is coming to the BBC America this January, culminated in an episode focused on how cities are affecting animal populations around the world.

The Hawksbill turtle — a critically endangered species — was one of the featured creatures. And it was really tough to watch.

The series, narrated by Sir David Attenborough, explained what happens when these hatchlings are born.

When Hawksbill turtles hatch from their eggs at night, their immediate instinct is to go toward the brightest horizon, which — if humans didn't exist — would lead them to the sea (and safety).

This is a Hawksbill turtle hatchling, born in a Jakarta breeding center in 2010. Photo by Romeo Gacad/AFP/Getty Images.

But humans do exist. And our expanding societies have had a dramatic effect on this crucial point in the hatchlings' lives.

As cities continue to sprout up on seashores, their bright lights complicate those first few moments in a hatchling's life. Instead of being drawn toward the sea, hatchlings are drawn toward the artificial lights of the city. This isn't good.

Without human interference, Hawksbill turtles already have a small chance of surviving long-term, according to Carla Daniel, deputy field director of the Barbados Sea Turtle Project. But with this added barrier stopping them from safely reaching the ocean, baby turtles are getting "crushed in the road [or] lost forever in drains," among other not-so-happy endings, on their accidental journeys into the city.

It was a big wake-up call for many distraught "Planet Earth II" viewers.

The outcry among upset viewers spurred responses from the Barbados Sea Turtle Project, which partnered with the BBC during production.

"We know that watching the footage on the 'Cities' episode of 'Planet Earth II' last night was emotional and heartbreaking," the group wrote on its Facebook page. "While it does portray what thousands of hatchlings face every year, we want to reassure you that we do our very best to ensure that as many hatchlings as possible are rescued and no hatchling is ever left behind!"

Baby turtles that were hatched at a conservation center in West Sumatra are released into the ocean. Photo by Adek Berry/AFP/Getty Images.

The "Planet Earth II" team also assured viewers on Twitter that its film crew did, in fact, break protocol and saved any turtles it spotted.

Typically, the crew does everything it can not to engage or disrupt wildlife while filming, but — because this particular tragedy was manmade — they decided to intervene.

The hatchlings' fatal endings served as a learning moment for viewers on the unintended consequences of our modern existence as humans.

Many of our behaviors and technologies have surprising consequences to other species. Light pollution is a great example.

It doesn't just affect baby turtles, after all.

While light pollution may not seem as harmful as, say, pumping pollution into the air or cutting down huge swaths of trees, artificial lighting is responsible for millions of bird deaths each year, according to the International Dark Sky Association. Many birds use moonlight and starlight to hunt and migrate, and bright city lights can throw them off course. Birds may arrive in a new region too early or too late, for instance, and miss the climate conditions they need to survive there.

Photo by Frederic J. Brown/AFP/Getty Images.

Artificial lighting, which unintentionally draws insects, may create a "fatal attraction" between the tiny creatures and our manmade structures as well. Although insects seem like a nuisance to us, they're often the foundation of the food web in a given habitat. A decline in Insect population can affect whole ecosystems.  

The artificial light problem may seem unconquerable for many devastated "Planet Earth II" viewers. But the last thing we should do is give up.

Take it from Carla Daniel.

“There are many times that everything feels kind of pointless," she explained candidly of the enormous problem of hatchling deaths. "'What's the point in doing this?' This is one of those things where we kind of all have to hold hands and come together and agree to make a difference.”

“If there was one, single thing that was necessary for change, [it's] for you to get up," she noted. "Go out of your house and do something [about it]."

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