Photo by Priscilla Du Preez 🇨🇦 on Unsplash

Every autumn, something strange happens along the Pacific Northwest's rivers. The salmon don't come back the way they used to. What was once a reliable abundance—so thick you could supposedly walk across the water on their backs—has become a trickle. In 2023, some Oregon rivers saw returns so low that commercial fishing seasons were canceled entirely. The Klamath River, a 250-mile artery that drains water from Oregon into California, hit record lows. And nobody's talking about it.

The collapse isn't sudden, which is partly why we've ignored it. Ecological disasters that unfold over decades feel less urgent than those that happen overnight. But the numbers tell a story of a civilization slowly strangling something irreplaceable.

The Numbers Behind the Silence

Let's start with the hard data. In 1850, somewhere between 10 and 16 million Pacific salmon returned to their spawning grounds each year. Today, that number sits around 1 to 2 million. We've lost roughly 90 percent of the salmon that once defined these rivers.

The Chinook salmon, the largest and most iconic species, used to return in numbers that made rivers silver-black with fish. The Columbia River alone used to see over 10 million Chinook annually. Last year's count? Fewer than 200,000. That's a 98 percent decline in less than two centuries. If this were happening to any other resource—say, oil reserves—we'd treat it as a catastrophic emergency.

Some specific examples drive this home. The Snake River, a major tributary of the Columbia, has seen its spring Chinook population drop from over 200,000 to fewer than 5,000 in recent years. The Klamath River system, which once supported runs of 625,000 fish, now barely sustains 10,000. These aren't predictions about what might happen. These are current conditions.

The economic consequences are staggering. Commercial fishing, which once generated billions annually across the Pacific Northwest, now operates at a fraction of its historical capacity. Fishing towns that thrived for generations have become shells of themselves. Processors have closed. Boats have been sold. Communities that built their identities around salmon have been forced to reinvent entirely.

The Dam Problem That Nobody Wants to Talk About

Here's the uncomfortable truth: the primary villain in this story isn't climate change, overfishing, or pollution. It's dams.

The Columbia River basin contains 14 major dams and hundreds of smaller ones. They were built for hydroelectric power, irrigation, and flood control—all reasonable goals. But the architects of these dams in the 1930s through 1970s didn't fully account for one simple fact: salmon need to move. They need to swim upstream to spawn and downstream to reach the ocean. Dams don't just slow them down. They block them entirely.

Fish ladders—those staircase-like structures built alongside dams—sound like elegant solutions. They're not. Most salmon trying to navigate these passages get disoriented or exhausted. Studies show that only 15 to 25 percent of migrating salmon successfully pass through a single dam. With some rivers having four or five dams in succession, the cumulative effect is devastating. A salmon trying to reach its birth river faces survival odds that would make any creature hesitate.

The young salmon heading downstream face similar problems. Juvenile fish get sucked into turbines or are forced through spillways at depths and speeds that kill them. Researchers estimate that dams are responsible for roughly 50 percent of Pacific salmon mortality in the Columbia River system. That's the single largest cause of death for these fish.

What's particularly maddening is that we've known this for decades. Environmental scientists have been documenting dam impacts on salmon populations since the 1960s. Yet political and economic interests have largely silenced serious discussion about removing them.

Why We Built Walls Between Fish and Home

To understand why dams persist despite their catastrophic impact on salmon, you need to understand the interests they serve. Hydroelectric dams generate enormous amounts of cheap electricity for the Pacific Northwest. Irrigated agriculture depends on the water storage they provide. Barging operations use the reservoirs created by dams to move cargo.

These benefits accrue to specific industries and regions. The costs—a collapsed salmon population and the loss of a cultural and economic foundation for Native tribes and fishing communities—are more diffuse and historically less politically powerful.

The Yurok, Hoopa, Karuk, and dozens of other tribes that lived alongside these rivers for thousands of years view salmon not as a commodity but as kin. Salmon are woven into their spiritual beliefs, their food systems, and their identity. The collapse doesn't just represent ecological damage to these communities—it's a erasure of their world.

Commercial and recreational fisheries represent another constituency. Oregon's sportfishing industry alone contributes over $1 billion to the state economy annually. But that number represents potential—what fishing could generate if salmon populations recovered. For now, that industry operates at a fraction of its capacity, watching its future evaporate.

The Conversation Nobody Wants to Have

Here's what's remarkable: removing dams is technically feasible. We've done it. Between 1999 and 2014, four major dams on the Elwha River in Washington were removed. Within just a few years, salmon populations began rebounding in ways that surprised even optimistic scientists. Chinook returned to sections of the river they hadn't inhabited in decades.

Yet there's been almost no political momentum to remove the larger, more economically important dams on the Columbia and Snake Rivers. The costs are real—hydroelectric jobs, cheap power, agricultural infrastructure. But the framing of the debate accepts a false choice: salmon or prosperity. As though we can't find a middle path.

The irony is that maintaining the current system doesn't guarantee either. Salmon populations continue declining. The dams age and require increasingly expensive maintenance. Climate change is reducing snowpack in the mountains that feed these rivers, making reservoirs less reliable for both electricity and irrigation.

Some voices in the Pacific Northwest—scientists, tribal leaders, and a growing contingent of younger environmentalists—are pushing for a different conversation. What if we invested in removing smaller dams first? What if we modernized our power grid so it didn't depend so heavily on one source? What if we redesigned irrigation systems around water scarcity rather than abundance?

These questions remain mostly academic. The salmon keep disappearing. The rivers flow through their industrial channels. And the communities that once defined themselves by their relationship to these fish search for new identities.

What Recovery Actually Looks Like

The Elwha River example matters because it shows that salmon populations can rebound remarkably quickly if given the chance. Native fish aren't waiting for perfect conditions. They're waiting for access. They're waiting for rivers that flow naturally again.

If we're serious about recovery, it requires accepting that some old infrastructure needs to fail. That's politically difficult. But it's ecologically necessary. And for communities built on salmon, it's economically necessary too. A river with salmon is worth more, in the long run, than a river generating cheap power and dying fish.

The salmon apocalypse isn't inevitable. It's chosen. Every year we maintain the dams, we make that choice again. And every year, the salmon get fewer.

If you want to understand how our environmental choices reflect our values, watch what we do about the dams. That's the real test. Related to how our environment is being changed, you might also find it enlightening to read about The Ghost Forests Rising from Our Coasts: How Sea Level Rise Is Turning Trees into Tombstones, which explores another ecosystem on the edge of transformation.