Parris Island waging battles to fight back climate change
PARRIS ISLAND, S.C. — Rising seas are encroaching on one of America’s most storied military installations, where thousands of recruits are molded into Marines each year amid the salt marshes of South Carolina’s Lowcountry region.
Marine Corps Recruit Depot Parris Island is vulnerable to flooding, coastal erosion and other impacts of climate change, a Defense Department-funded “resiliency review” noted last month. Some scientists project that by 2099, three-quarters of the island could be under water during high tides each day.
Military authorities say they’re confident they can keep the second-oldest Marine Corps base intact, for now, through smallscale changes to existing infrastructure projects.
Maj. Marc Blair, Parris Island’s environmental director, describes the strategy as “the art of the small,” a phrase he attributes to the base’s commanding general, Brig. Gen. Julie Nethercot. It means such things as raising a culvert that needs to be repaired anyway, limiting development in low-lying areas and adding floodproofing measures to firing range upgrades.
Others advocate much larger and more expensive solutions, such as building huge seawalls around the base, or moving Marine Corps training away from the coast altogether.
Parris Island has an outsized role in military lore and American pop culture as a proving ground for Marines who have served in every major conflict since World War I. But the rising sea is proving to be a formidable enemy.
Salt marsh makes up more than half of the base’s 8,000 acres, and the depot’s
highest point is just 13 feet above sea level. It is linked to the mainland by a single road that’s already susceptible to flooding.
Low-lying areas on the island and the nearby Marine Corps air station already flood about 10 times a year, and by 2050, “the currently flood-prone areas within both bases could experience tidal flooding more than 300 times annually and be underwater nearly 30 percent of the year given the highest scenario,” according to the Union of Concerned Scientists.
Military reports have long acknowledged threats from climate change to national security, as wildfires, hurricanes and floods have prompted evacuations and damaged bases. A Pentagon document published last fall, after President Joe Biden ordered federal agencies to revamp their climate resilience plans, says the Department of Defense has “a comprehensive approach to building climate-ready installations” and cites an adaptation and resilience study undertaken by Parris Island.
But day-to-day disruptions are growing, from nuisance flooding on roads to rising temperatures and higher humidity that when combined, limit the human body’s ability to cool down with sweat.
Those wetter, hotter days could limit outdoor training. Over 500 people on Parris Island suffered from heat stroke and heat exhaustion between 2016 and 2020, putting the base among the top 10 U.S. military installations for heat illnesses, according to the Armed Forces Health Surveillance Branch.
All the training at Parris Island could be replicated on cooler, drier land somewhere else, said retired Brig. Gen. Stephen Cheney, who served as commanding general at the base from 1999 to 2001.
But Cheney doesn’t foresee any appetite in Congress for closing the base and relocating, which means the government needs to start investing in structural solutions to protect its crucial components such as the firing ranges near the water, he said.