By Kristeen Barclay
The Columbia River is being re-engineered into a cooling system. Cooling system for industrial-scale computers. This shift is fundamentally changing the capacity of our river to function. The Snake and Yakima Rivers are at risk as well.
This is not a debate over progress; it is a defense of survival. The situation is characterized by a fundamental conflict between those who prioritize machine-driven growth and those who recognize that being human requires a living, healthy earth.
The people living along this river demand a future where the natural world is preserved rather than eliminated. The future of the Columbia is being decided in private meetings through individual utility contracts rather than through a public, regional strategy for the survival of the river. The cold, hard truth is that if the current pace of industrial growth continues unabated, the ecological health of the river will be sacrificed to ensure that data centers can run their cooling systems without interruption. The river is essentially being auctioned off. The priority is the uptime of servers and the stability of the tech industry; the health of the Columbia River is simply the cost of doing business. If this path is not reversed, the river will no longer be a living, breathing natural system, but a degraded plumbing line for the tech sector.
At present The Columbia still appears massive. It is the 4th largest body of freshwater in North America. The steady, uncoordinated withdrawal of water for dozens of for-profit facilities is creating a cumulative drain. A drain that is not being accounted for by any single regional authority. Facilities and municipalities manage water independently, fragmenting regional oversight. This approach ignores a physical reality, water taken or degraded in one spot impacts the entire river system.
Water is finite. It is why this planet thrives. The watershed is a limited system, not an infinite one. These withdrawals threaten that reality. While the river appears massive, it is already heavily stressed. Industrial facilities withdraw millions of gallons daily. They do not just take water. They remove the flow, temperature, and balance that the river needs to survive.
It is a Depletion Trap
A 16-unit data center campus spans 4 million square feet. Daily water depletion is significant at this scale. Conservative estimates range from 8 million to 24 million gallons each day. if you were to take 24 million gallons and divide it by an average daily usage of 100 gallons per person, that volume of water serves roughly 240,000 people!
If you drained that volume into a standard residential backyard swimming pool holding 20,000 gallons, you would fill 1,200 pools every single day.
In terms of weight, 24 million gallons weighs roughly 200 million pounds. In peak summer months or during sustained high-load AI processing, consumption can spike toward the 24 million gallons per 24-hour cycle.
Data centers rely on water to keep servers cool, primarily through evaporative cooling. This is the chosen method to handle the intense heat produced by thousands of high-performance chips. By blowing hot air over wet surfaces, the centers use the physical process of evaporation to pull heat away from the hardware. This process is not a simple loop where water is borrowed and returned; it is an act of total consumption. Unlike industries that cycle water and return it, these facilities use water as a fuel that is burned up. The water enters the facility as a liquid and is intentionally destroyed to facilitate heat transfer. By forcing warm air over wet surfaces, the water turns into vapor and is lost to the atmosphere, meaning it is permanently removed from the river system. A single hyperscale data center can consume millions of gallons every single day, running constantly without pause. When this is multiplied by the dozens of facilities operating or planned in places like Wallula and The Dalles, it results in a permanent, massive reduction in the base flow of the river. This is a physical reality that lowers the river’s overall capacity to support its own natural processes, making the entire system more vulnerable during the summer months when water is most needed.
Quality Pretense
These centers do not just take water from the river. If they return water it is a degraded, chemically altered substance. When a data center consumes millions of gallons daily for cooling, that volume is removed from the local watershed. Most of this water is lost to the atmosphere through evaporation, meaning it is not immediately available for other human or ecological needs in that region. The portion of water that remains, known as blowdown, is altered by the addition of biocides, corrosion inhibitors, and concentrated minerals.
Once this water is discharged into a river or injected into an aquifer, its chemical composition is changed. To prevent mold, bacteria, and mineral scaling in their cooling pipes, operators inject the water with biocides, corrosion inhibitors, and various salts. These chemicals turn the cooling water into a concentrated cocktail of toxins. The cooling system essentially acts as a chemical collector, concentrating whatever impurities are in the water and adding its own industrial additives to the mix. The discharge, known as BLOWDOWN, is significantly warmer than the water originally pulled from the river, typically 10 to 20 degrees Fahrenheit higher. Heat is a pollutant in this context. Salmon and steelhead are cold-water fish; even a small increase in water temperature caused by these discharge pipes can turn a migration path into a dead zone where fish cannot travel or spawn. When the river is already at or near 68 degrees, the threshold for salmon health, the addition of this heated discharge pushes the river into a lethal range. This creates a thermal barrier, a literal wall of hot water that forces fish to endure physical shock or find alternate paths, wasting the energy they need for spawning.
Persistent Strain
Each data center project is typically reviewed and permitted as an individual facility, almost always ignoring the collective impact of neighbors up or down the river. This is a regulatory failure. Each applicant claims that their specific project is too small to ruin the river, but they refuse to account for the fact that dozens of companies are making the exact same argument on the exact same stretch of water. Regulators rarely look at the total stress being placed on a single stretch of the river by five, ten, or twenty facilities acting at once. The permitting process is compartmentalized. It focuses on the immediate site of the data center rather than the hydrological health of the river itself. This allows for a series of small approvals that, in combination, lead to a massive, unmanaged impact on the watershed. This ignores the existing, heavy demand already placed on the river by massive agricultural irrigation projects and the industrial dam network. Adding industrial-scale data center cooling to this mix ignores the reality that the river is already over-committed. In any year where severe drought occurs, the competition for the remaining water will be absolute, leaving little for the natural environment. When the snowpack is low and the river runs thin, there is no backup water.
Unvarnished Hardship
The inherent right to act for ourselves remains foundational. Tribal nations and local communities share a deep dedication to protecting our land and water. This is about preventing distant industrial interests from overriding the choices made by tribes, families, and local businesses before the bulldozers arrive for these data centers. That power is being eroded right now. Decisions are being forced by developers and municipal officials who are removed from the situation, rather than by the people whose lives are actually tied to the river.
This involves real-world risks to the living conditions and future of the region, which are the direct, irreversible consequences for the families and ecosystems that depend on this water for their very existence, long after the tech companies move on to the next site. The hidden gap is the space where the public should be seeing clear data, but instead, they find a manufactured silence—a missing piece where accountability should exist but has been hollowed out. There is no public log of what is happening. We are kept in the dark about how much water is truly consumed, what chemicals are being put into it, and how much is being taken in total.
References:
- Columbia Riverkeeper, A Closer Look: Columbia River Data Centers, February 2026.
- Sierra Club, Data Centers Are Hogging This Town’s Water, May 2026.
- MOST Policy Initiative, Data Center Water Use, April 2026.
- National Wildlife Federation, Data Centers, Water, and the Strain on Local Resources, May 2026.
- Goldendale Energy Storage Project, Environmental Impact Statements and Tribal Resource Analysis (2026).
- Washington State Department of Ecology, Water Quality Standards for Temperature in the Columbia River Basin (2026).
- Environmental Protection Agency, Technical Guidance on Cooling Water Intake and Discharge (2026).
- United States Geological Survey (USGS). (2026). The Water Cycle and Water Supply.
Kristeen Barclay regularly observes the Pacific Northwest rivers, and she writes compellingly when they are threatened by industry or by other misuses.
This article is from a Facebook post by Kristeen Barclay.