Lake Mead’s vanishing waters are exposing a long-hidden mountain landscape — as the infamous reservoir creeps within inches of an ominous new record.

The lake’s surface has plunged to just 1,041.84 feet above sea level, putting it less than four inches away from breaking the record low set in July 2022.

As the water disappears, rocky spires, trees and the tops of submerged mesas are remerging from the depths, creating dangerous new obstacles for boaters.

Before the Hoover Dam was completed in 1936, the sprawling area east of Las Vegas was a desert landscape filled with mountains, buttes and other geological formations.

The dam backed up the Colorado River and flooded that rugged terrain, creating the largest reservoir in the US — capable of holding 9.3 trillion gallons when full.

But decades of heavy water use and persistent drought have taken a brutal toll.

Lake Mead now holds only about 27% of its historic capacity, while the waterline has fallen more than 188 feet, according to SFGATE.

And the lake could sink another 16 feet or more before the end of the year, Southern Nevada Water Authority outreach manager Bronson Mack previously told KVVU-TV.

The disappearing water has revealed grisly secrets before.

In 2022, human remains began surfacing as Lake Mead plunged to record lows, including the body of a man who authorities said had been fatally shot decades earlier and stuffed inside a barrel — prompting speculation about a possible mob hit.

“It’s flooded mountain range, so it does have some of those hazards that are below the shore,” Lake Mead National Recreation Area Chief Ranger Mike Garel told the TV station. “Obstacles are not just close to shore.”

Rangers have been installing and repositioning buoys as previously submerged hazards approach the surface, meaning some markers may no longer be where regular visitors expect them.

Officials are urging boaters to carry nautical maps and communication equipment that works without cell service and to use spotters while navigating unfamiliar areas.

The National Park Service is even asking visitors to report newly discovered hazards and provide their GPS coordinates as the lake’s rapidly changing landscape becomes increasingly difficult to track.

The crisis carries especially high stakes for California.

California takes the largest share of Colorado River water of any state, while Southern California’s Metropolitan Water District relies on the river as one of its major sources for a system serving 19 million people across six counties, according to CalMatters.

And with the seven Colorado River states still deadlocked over how to divide the dwindling water supply, the federal government is expect to impose a temporary plan that would slash California’s allocation by an estimated 10% through 2028 — roughly 440,000 acre-feet per year, according to the outlet.

Meanwhile, Lake Mead remains a massive tourist draw despite its disappearing shoreline, attracting 6.14 million visitors in 2025 and ranking among the National Park Service’s 10 most-visited sites.

Download The California Post App, follow us on social, and subscribe to our newsletters