Standing Rock and the Dakota Access Pipeline: Water, Health, Protest, and the 2026 Final Decision

In 2016 and early 2017, thousands of people gathered near the Standing Rock Sioux Reservation on the border of North and South Dakota to oppose the Dakota Access Pipeline, which was being built to carry crude oil from North Dakota’s Bakken oil fields to Illinois. The pipeline’s route crossed under Lake Oahe, a reservoir on the Missouri River that provides drinking water for the tribe, and passed near sites the tribe considers sacred. The encampments became one of the largest Native American-led protests in modern U.S. history before being cleared in February 2017.

The protesters’ parting message was that the fight would continue, and it did, in courtrooms rather than camps. Nearly a decade later, the pipeline is operating, and in May 2026 the U.S. Army Corps of Engineers issued its final decision allowing it to continue crossing under Lake Oahe. This article reviews the health and environmental concerns at the heart of the dispute, what happened during the protests, the long legal battle, and what the case means for water, Indigenous health, and environmental decision-making.

What was the Standing Rock pipeline protest about? In 2016, thousands gathered at Standing Rock to oppose the Dakota Access Pipeline, which was routed beneath the Missouri River just upstream of the Standing Rock Sioux reservation. Protesters, led by Indigenous “water protectors,” feared an oil spill would contaminate their water and that sacred sites were threatened. The pipeline now operates, but legal battles over its environmental review continue.

The Pipeline and the Route

The Dakota Access Pipeline, developed by a subsidiary of Energy Transfer, runs about 1,170 miles from North Dakota to Illinois and can carry hundreds of thousands of barrels of crude oil per day. An earlier proposed route passed north of Bismarck but was moved, partly because of concerns about the city’s water supply. The final route crossed under Lake Oahe about half a mile upstream of the Standing Rock Sioux Reservation, on land the tribe considers part of its traditional territory under 19th-century treaties. The tribe argued it had not been adequately consulted and that the crossing put its water at risk. The company and supporters argued that the pipeline was safer than transporting oil by rail or truck, that it followed an existing utility corridor, and that it brought jobs and tax revenue.

What Happened During the Standing Rock Protests?

In 2016 and 2017, thousands camped near Standing Rock to oppose the Dakota Access Pipeline; clashes with security and police, including water cannons in freezing weather, pepper spray, and rubber bullets, caused injuries. The encampments drew members of hundreds of tribes and many non-Native supporters, who described themselves as water protectors. Confrontations with law enforcement escalated in late 2016. On one night in November 2016, at a bridge near the camps, officers used water cannons in below-freezing temperatures along with rubber bullets, bean bag rounds, and chemical agents; volunteer medics reported treating many people for hypothermia, blunt trauma, and other injuries, and one woman suffered a severe arm injury. Law enforcement officials said protesters had engaged in unlawful and dangerous actions. Hundreds of people were arrested over the course of the protests.

The health risks of so-called less-lethal weapons are well documented. A 2017 systematic review in BMJ Open by Rohini Haar and colleagues analyzed injury data on 1,984 people struck by rubber and plastic bullets, bean bag rounds, and similar projectiles in crowd-control settings worldwide. Fifty-three people died, about 2.7 percent, and about 15 percent of those injured suffered permanent disability, often from injuries to the head, eyes, and face. The authors concluded that these weapons can cause serious injury and death and called for stricter standards on their use. Exposure to cold water in freezing temperatures also carries risks of hypothermia.

From Protest Camps to Courtrooms

After the Army Corps granted the easement for the Lake Oahe crossing in February 2017, following a presidential directive to expedite approval, the pipeline was completed and began operating that June. The Standing Rock Sioux and other tribes continued their legal challenge. According to Harvard Law School’s Environmental and Energy Law Program, a federal court in July 2020 vacated the easement, ruling that the Corps had violated the National Environmental Policy Act by failing to prepare a full environmental impact statement, and ordered the pipeline drained and shut down. An appeals court upheld the requirement for an environmental impact statement but did not require the shutdown, and the pipeline continued operating while the Corps conducted the review. The Corps released a draft statement in 2023 and the final statement in December 2025.

On May 21, 2026, the Army Corps signed its record of decision, granting the easement with additional conditions and ending the six-year review. An Army official said the decision was putting years of delays to rest, Energy Transfer said it was pleased, and the Standing Rock Sioux Tribe said the added conditions did not address its concerns. The pipeline crosses at least 95 feet below the bed of Lake Oahe.

Why Were Protesters Worried About the Water?

The pipeline crosses under the Missouri River just upstream of the reservation, so protesters feared an oil leak would contaminate the drinking water for the Standing Rock Sioux and millions downstream. The tribe’s central fear is a spill into the Missouri River system that supplies its drinking water. Pipelines are generally considered less likely than rail or truck to have accidents per barrel transported, but when spills occur, they can be large and difficult to clean up, especially under water or ice. Research on oil spills shows that exposure can affect health. A 2016 review in the Journal of Toxicology and Environmental Health by Blanca Laffon and colleagues compiled evidence from major spills and found associations between exposure and acute physical symptoms, mental health effects, and signs of genetic, endocrine, and immune changes among cleanup workers and coastal residents. A 2014 study in the American Journal of Medicine by Mark D’Andrea and G. Kesava Reddy reported altered blood and liver function measures among people exposed during the 2010 Gulf oil spill cleanup compared with reference values.

Mental health effects can be substantial. A 2015 analysis from the National Institutes of Health’s GuLF Study in Social Science and Medicine by Sarah Lowe and colleagues examined nearly 9,000 Deepwater Horizon cleanup workers and documented mental health problems among workers, with relatively few using mental health services. Communities that depend on rivers and lakes for water, food, and cultural practices may experience particular distress after contamination.

Freshwater spills pose distinct challenges. In 2010, a pipeline rupture released diluted bitumen into the Kalamazoo River in Michigan. A 2022 study in Environmental Pollution by Otten and colleagues described it as one of the largest freshwater oil spills in U.S. history, with more than 3.2 million liters of oil affecting 56 kilometers of river habitat, and tracked the long-term survival of turtles rescued during cleanup, illustrating how spills affect river ecosystems for years. Cleanup of that spill took years and cost more than a billion dollars.

How Does the Pipeline Affect Indigenous Communities?

Beyond spill risk, the pipeline raised concerns about threats to sacred sites, treaty rights, and the pattern of placing environmental hazards near Indigenous and marginalized communities. For many Native communities, access to safe water is already a challenge. Households on reservations are far more likely than other U.S. households to lack complete plumbing, and some communities rely on wells or hauled water vulnerable to contamination. Threats to water sources therefore carry particular weight. Beyond physical health, water and land hold cultural and spiritual significance central to identity and well-being. A 2011 paper in the Du Bois Review by Karina Walters and colleagues described how historical trauma, including forced relocation and loss of land, may become embodied in health inequities among American Indians and Alaska Natives across generations. Many Standing Rock participants framed the pipeline fight as part of this longer history, including the flooding of tribal lands when the dams forming Lake Oahe were built in the mid-20th century.

Different Perspectives

Perspective	Main arguments
Standing Rock Sioux Tribe and supporters	Risk to drinking water; inadequate consultation; treaty rights; sacred sites; climate concerns
Pipeline company	Pipeline is deeply buried and monitored; safer than rail; legally permitted after review
North Dakota officials and industry	Jobs, tax revenue, energy production, lower transport costs for Bakken oil
Federal regulators (2026 decision)	Easement granted with additional conditions after environmental impact statement
Civil liberties and medical groups	Concerns about force used against protesters and press freedom

What Happened Legally After the Protests?

Courts later found the pipeline’s environmental review inadequate and ordered further study, and litigation over its permits and operation has continued for years even as oil flows. Legal battles extended beyond the pipeline permit. Energy Transfer sued environmental organizations it accused of orchestrating unlawful protest activity. In 2025, a North Dakota jury ordered Greenpeace organizations to pay hundreds of millions of dollars in damages; Greenpeace disputed the claims, called the case an attempt to silence protest, and pursued appeals and a countersuit in Europe under laws targeting lawsuits meant to suppress public participation. Several states passed laws increasing penalties for trespassing or damaging critical infrastructure such as pipelines, which supporters described as protecting public safety and critics described as chilling peaceful protest. These developments continue to shape how environmental protests are conducted.

What Are the Lessons From Standing Rock?

Standing Rock highlighted the importance of meaningful consultation with Indigenous nations, thorough environmental review, and recognizing water as central to health and rights in infrastructure decisions. The Dakota Access case raised questions about how major infrastructure projects are reviewed. The courts found that the federal government should have conducted a full environmental impact statement before approving the Lake Oahe crossing, yet the pipeline operated for nearly nine years while that review took place. Tribes argued that consultation came too late and that their concerns about spill risk and treaty rights were not adequately addressed. Industry argued that lengthy reviews create uncertainty for projects that have already been built. Many observers concluded that early, meaningful consultation with affected communities, and completing environmental reviews before construction, could prevent conflicts like Standing Rock.

Pipelines, Climate, and Energy

For many participants, the protest was also about climate change and the continued expansion of fossil fuel infrastructure. Supporters of the pipeline argue that oil will be produced and transported regardless, and that pipelines are the safest way to move it. Critics argue that new long-lived infrastructure locks in fossil fuel use for decades. These debates continue across many pipeline projects in North America, including Keystone XL, which was canceled in 2021, and Line 3 in Minnesota, which was completed despite protests.

Health Care at the Camps

The camps operated their own medical tents staffed by volunteer physicians, nurses, herbalists, and medics, many from Native communities. They treated injuries from confrontations, cold-weather illnesses, and everyday health problems among thousands of residents living in tents, tipis, and temporary structures through a harsh North Dakota winter. Sanitation, clean water, food safety, and heating were constant challenges. The experience highlighted how large gatherings in extreme climates require planning for public health, and how communities organized care when official services were limited or distrusted.

Mental Health and Community

Participants described the camps as places of deep community, ceremony, and pride, especially for Native youth who helped launch the movement with a long-distance run to Washington. At the same time, confrontations, arrests, and the eventual clearing of the camps caused distress and trauma for many. Research on Indigenous health emphasizes the importance of cultural connection, community, and self-determination for well-being. For many participants, Standing Rock was both a source of strength and a reminder of historical patterns of land loss.

What Communities Near Pipelines Can Do

Residents living near pipelines can learn the route and emergency response plans from pipeline operators and local emergency management agencies. Knowing the signs of a leak, such as unusual odors, dead vegetation, or bubbling in water, and reporting them immediately is important. Communities that rely on surface water can ask utilities about spill response plans and alternative water sources. Tribal and local governments can participate in regulatory reviews, request consultation, and monitor water quality independently.

A Balanced View

The Dakota Access Pipeline has operated since 2017 without a major spill at the Lake Oahe crossing, and federal regulators concluded in 2026 that it could continue with additional conditions. The Standing Rock Sioux Tribe and its supporters remain concerned that a spill could threaten their water and that their rights were not adequately respected. Research on oil spills, crowd-control weapons, and historical trauma helps explain why the conflict was experienced as a health issue, not only an environmental or legal one. Reasonable people can weigh energy needs, economic benefits, and environmental and cultural risks differently, but the case shows the costs of consultation and review that come too late.

Practical Takeaways

Learn whether pipelines cross near your water sources and how emergencies would be handled. Support early and meaningful consultation with affected communities on major projects. Be aware of the injury risks of crowd-control weapons if you participate in protests, and know where medical help is available. Follow regulatory processes and comment periods for projects that affect your community.

Treaty Rights and History

The Standing Rock Sioux Tribe’s arguments drew on treaties signed with the United States in the 19th century, including the Fort Laramie treaties of 1851 and 1868, which recognized large territories for the Great Sioux Nation. Over the following decades, much of that land was taken through later legislation and actions, including the seizure of the Black Hills. In the 20th century, dams built on the Missouri River under federal flood control and power programs flooded bottomlands where tribal communities lived, farmed, and gathered food and medicine. This history shaped the tribe’s view that the pipeline continued a pattern of decisions made without its consent.

How Pipelines Are Regulated

Interstate oil pipelines in the United States are regulated for safety by the Pipeline and Hazardous Materials Safety Administration (PHMSA), which sets standards for construction, inspection, leak detection, and emergency response. Crossings of federal land and waterways require permits from agencies such as the Army Corps of Engineers, and those decisions trigger environmental reviews under NEPA. Operators must maintain spill response plans. Critics argue that leak detection systems often miss smaller leaks and that penalties are low, while industry points to declining incident rates per mile. The Lake Oahe easement conditions added in 2026 were intended to address some spill and response concerns.

Journalists and Free Speech

Several journalists and filmmakers covering the protests were arrested or charged, raising concerns among press freedom organizations. In one prominent case, charges against a national broadcast journalist who filmed a confrontation between security guards and protesters were dismissed by a judge. The protests also generated debates about the role of private security firms, which used surveillance and counterintelligence tactics, as later reported by journalists who obtained internal documents. These issues remain relevant to how protests on public and private land are policed.

Standing Rock After the Protests

In the years after the camps closed, the Standing Rock Sioux Tribe pursued legal challenges while also investing in community priorities, including renewable energy projects intended to reduce reliance on fossil fuels and generate income. The movement inspired other Indigenous-led environmental campaigns and increased public awareness of tribal consultation and treaty rights. Many participants continued organizing on issues such as water protection, climate, and missing and murdered Indigenous people.

Looking Ahead

With the 2026 record of decision, the regulatory fight over the Lake Oahe crossing has largely ended, though further litigation remains possible. Pipeline safety at the crossing will depend on monitoring, maintenance, and emergency preparedness under the new conditions. Broader questions raised at Standing Rock, about tribal consultation, environmental review timing, protest rights, and the future of fossil fuel infrastructure, continue to shape policy debates across the country. Whatever one’s view of the pipeline itself, the experience at Standing Rock showed that environmental decisions affecting water and land are also decisions about health, culture, and trust between governments and the communities they serve.

Pipelines Versus Rail and Truck

Before Dakota Access, much Bakken crude moved by rail, and a series of oil train derailments, including the 2013 disaster in Lac-Mégantic, Quebec, which killed 47 people, highlighted the dangers. Industry analyses and government data generally show that pipelines have fewer incidents per barrel-mile than rail or trucks, though pipeline spills can release larger volumes when they occur. Supporters of Dakota Access cited these comparisons to argue the pipeline improved safety overall. Opponents responded that the relevant question was not pipelines versus rail, but whether the specific crossing under the tribe’s water source was justified and properly reviewed.

Responding to a Spill Under Ice

One concern raised during the environmental review was the difficulty of responding to a spill beneath Lake Oahe in winter, when ice covers the reservoir for months. Oil trapped under ice is hard to locate and recover, and cold conditions slow cleanup and endanger responders. Tribes and environmental groups argued that earlier spill risk analyses underestimated these challenges. The added conditions in the 2026 easement were intended to strengthen spill preparedness, though the tribe said they did not resolve its concerns.

Social Media and the Movement

Standing Rock was one of the first major environmental protests to unfold largely through social media and livestreams. Participants broadcast confrontations in real time, and more than a million people checked in to the Standing Rock reservation on Facebook in a show of solidarity. Social media amplified the movement’s reach and drew donations and volunteers, while also spreading unverified claims on all sides. The protests became a model for later movements that combined on-the-ground organizing with digital communication.

Questions to Ask About Major Infrastructure Projects

Has the full environmental review been completed before construction begins? Were affected communities, including tribes, consulted early and meaningfully? What are the risks to drinking water and food sources, and how would emergencies be handled? Are alternatives, including different routes, adequately considered? Who benefits economically, and who bears the risks? These questions, central to the Standing Rock dispute, apply to pipelines, mines, dams, and other projects that affect communities and natural resources.

Common Myths

“The pipeline was never built.” It has operated since 2017.

“The courts permanently shut down the pipeline.” A 2020 shutdown order was not upheld on appeal; the pipeline kept operating during review.

“Less-lethal weapons are harmless.” A systematic review found deaths and permanent disabilities among injured people.

“The protest was only about oil.” Water, treaty rights, sacred sites, and self-determination were central.

“The 2026 decision ended all opposition.” The tribe said the conditions did not address its concerns.

Key Terms

Easement: A legal right to use land owned by another, here federal land at Lake Oahe.

Environmental impact statement: A detailed federal review of a project’s environmental effects required by NEPA.

NEPA: The National Environmental Policy Act, which requires federal agencies to assess environmental impacts.

Kinetic impact projectiles: Rubber bullets, bean bag rounds, and similar crowd-control weapons.

Historical trauma: Collective trauma from events such as forced relocation that may affect health across generations.

The Bottom Line

The Standing Rock protests of 2016 and 2017 brought national attention to the Dakota Access Pipeline’s crossing under Lake Oahe, the Standing Rock Sioux Tribe’s drinking water source. Protesters faced rubber bullets, water cannons in freezing weather, and chemical agents, weapons that a systematic review found can cause death and permanent disability. The pipeline has operated since 2017; courts required a full environmental review, which the Army Corps completed in December 2025, and in May 2026 the Corps granted the easement with additional conditions. Research on oil spills and on historical trauma helps explain why the tribe viewed the pipeline as a threat to health as well as land and culture. The case remains a landmark in debates over water protection, tribal consultation, and protest rights.

Frequently Asked Questions

Is the Dakota Access Pipeline still operating?

Yes. The Dakota Access Pipeline began carrying oil in 2017 and continues to operate. However, its legal status has remained contested for years. Courts found that the federal environmental review was inadequate and ordered additional study, and litigation over its permits has continued, leaving a cloud of legal uncertainty over the pipeline even as oil keeps flowing beneath the Missouri River.

What was the Standing Rock protest about?

The Standing Rock protest, which peaked in 2016, opposed building the Dakota Access Pipeline beneath the Missouri River just upstream of the Standing Rock Sioux reservation. Indigenous “water protectors” and thousands of supporters feared an oil spill would contaminate drinking water and that construction threatened sacred and burial sites. It became one of the largest Indigenous-led environmental movements in recent U.S. history.

Why were people worried about the pipeline and water?

The pipeline crosses under the Missouri River immediately upstream of the Standing Rock reservation, which relies on that water for drinking and other needs, as do millions of people downstream. Oil pipelines can and do leak, and a spill at that location could contaminate the water supply. Protesters argued the risk was unacceptable and that the route unfairly burdened a Native nation.

Were protesters hurt during the demonstrations?

Yes. Confrontations between demonstrators and security personnel and police led to injuries. Tactics used against protesters included water cannons in subfreezing temperatures, pepper spray, rubber bullets, and concussion grenades, and hundreds of people were arrested over the course of the protests. The physical and psychological toll on participants was significant, and the events drew national and international attention.

What happened to the land and water rights issues after Standing Rock?

The protests did not stop the pipeline, but they brought lasting attention to Indigenous treaty rights, environmental justice, and the adequacy of environmental reviews. Courts ordered further environmental analysis, and the case influenced later debates over pipelines and Indigenous consultation. For many, Standing Rock became a symbol of the broader struggle over water, land, and the rights of Native nations in the United States.

References

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2. Laffon B, Pásaro E, Valdiglesias V. Effects of exposure to oil spills on human health: Updated review. Journal of Toxicology and Environmental Health, Part B. 2016;19(3–4):105–128. PMID 27221976
3. D’Andrea MA, Reddy GK. Health risks associated with crude oil spill exposure. American Journal of Medicine. 2014;127(9):886.e9–886.e13. PMID 24859637
4. Lowe SR, Kwok RK, Payne J, et al. Mental health service use by cleanup workers in the aftermath of the Deepwater Horizon oil spill. Social Science and Medicine. 2015;130:125–134. PMID 25697635
5. Otten JG, Williams L, Refsnider JM. Survival outcomes of rehabilitated riverine turtles following a freshwater diluted bitumen oil spill. Environmental Pollution. 2022;311:119968. PMID 35977636
6. Walters KL, Mohammed SA, Evans-Campbell T, et al. Bodies don’t just tell stories, they tell histories: Embodiment of historical trauma among American Indians and Alaska Natives. Du Bois Review. 2011;8(1):179–189. PMID 29805469
7. Harvard Law School Environmental and Energy Law Program. The Dakota Access Pipeline (DAPL) regulatory tracker. eelp.law.harvard.edu
8. North Dakota Monitor via KOTA. Army Corps grants final approval for Dakota Access Pipeline, 9 years after oil began flowing. May 2026. kotatv.com

Last updated: October 6, 2026