LEVERING, Mich. — By midafternoon the snow had picked up — tiny, innocuous flecks becoming heavy, wet drops — but no one at Camp Anishinaabek seemed to notice. There were logs to split and shelters to insulate. A supply tent was still down after collapsing two weeks earlier during a storm. 

“We’ve got a long winter ahead of us,” a woman said as she spread a sawdust path, “so we’re just trying to prepare as best we can.”

The modest camp in the woods of northern Michigan is the symbolic base for protesters battling an aging oil pipeline that crosses one of the most environmentally critical locations in the country. A short drive up the highway, some 23 million gallons of oil flow daily through the Straits of Mackinac, an iconic waterway that connects Lake Michigan and Lake Huron and the state’s two peninsulas.

Line 5, operated by the Canadian multinational company Enbridge, has been enveloped in controversy for months. And even as calls for a shutdown have increased, Michigan’s outgoing governor has pressed for a new agreement to ensure it continues.

The “water protectors,” as those at the camp call themselves, vow to stay until the pipeline is decommissioned.

“I’m doing it for my people,” said Patrick Deverney, a 39-year-old member of the Grand Traverse Band of Ottawa and Chippewa Indians. “Without that water, we’re going to die.”

Enbridge’s Straits of Mackinac operation represents only a tiny fraction of a 645-mile system that originates at the tar sands of northern Alberta. The network, built in 1953, starts in Superior, Wis., and transports a daily average of 540,000 barrels of light crude and natural gas liquids east and south across Michigan before arriving at a distribution center in the border city of Sarnia, Ontario.

The company provided 102 jobs in Michigan last year, according to Enbridge data, and nearly $62 million in property and other taxes. Line 5’s twin metal pipes also deliver much of the state’s propane, heating thousands of homes in the Upper Peninsula.

But the route primarily serves as a shortcut across the Great Lakes to help meet Canadian demand. “The value of this pipeline almost exclusively goes to Enbridge Energy,” said Mike Shriberg, who heads the National Wildlife Federation’s regional center for the Great Lakes and sits on the Michigan Pipeline Safety Advisory Board. “Yet it’s risking arguably our most valuable asset.”

The stakes could hardly be higher. The larger Great Lakes system supplies drinking water for some 40 million people, sustains thousands of plant and animal species and supports vital industries such as fishing, logging and tourism. (The Straits of Mackinac, where an expanse of dazzling blue freshwater ripples below one of the world’s great suspension bridges, offers one of Michigan’s most famous images.)

And while most state residents feel a special attachment to the Great Lakes, the connection runs particularly deep for Native Americans. Several islands near the Straits are home to ancestral burial grounds, and under the 1836 treaty that led to Michigan’s statehood, the Anishinaabek people ceded some 14 million acres to the U.S. government but retained hunting and fishing rights. The pipeline, indigenous groups argue, threatens not just the environment but a culture.

“What they’re doing is taking away our connection with Mother Earth,” said Cody Bigjohn, an Odawa Indian in camouflage hunting pants, who seems to exude the outdoors. “We use all the things we gather. … So if that gets all poisoned, then we got to go back to the government and ask them, ‘Can we have some food.’”

A spill at the Straits, perhaps the only place in the world where an oil pipeline travels through several miles of freshwater, could be unprecedented. Computer models predict a major rupture would release tens of thousands of barrels of oil, potentially contaminating more than 1,000 square miles of water and hundreds of miles of shoreline. The area has strong and frequently shifting currents. In winter, the lakes often freeze, which would dramatically complicate any cleanup effort.

“Every spill is devastating,” said Guy Meadows, director of the Great Lakes Research Center at Michigan Technological University, who led a state-commissioned risk analysis released in September. “There is no single worst-case scenario.”

To read more on this story and see related reporting, follow this link to the Washington Post website.  https://www.washingtonpost.com/national/health-science/a-submerged-oil-pipeline-triggers-a-winter-of...