Omaha Sees More Sinkholes Than Midwest Peers

Eastern Nebraska's geology makes the city prone to cave-ins, though most don't go viral like the recent Pacific Street collapse.

Apr. 9, 2026 at 8:54pm

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A highly textured, abstract painting in muted earth tones depicting a complex web of intersecting geometric shapes and organic patterns, conceptually representing the complex geological forces and underground infrastructure challenges contributing to Omaha's sinkhole-prone landscape.Omaha's geology and aging infrastructure create a hidden network of vulnerabilities beneath the city's streets, leading to a constant battle against sinkholes and cave-ins.Omaha Today

A Flatwater Free Press analysis found that over the last five years, Omaha city work crews reported more than 2,100 'cave-ins' ranging from small dips in the pavement to gaping chasms. Though most are minor, Omaha sees more cave-ins than several other Midwestern cities due to its fine-grained sediment called loess that can be easily carried away by water, leaving behind gaps underground. The recent high-profile Pacific Street sinkhole that swallowed two vehicles quickly went viral, but most Omaha sinkholes don't attract the same attention.

Why it matters

Omaha's susceptibility to sinkholes highlights the challenges cities face in maintaining aging infrastructure built on unstable soil types. While massive, neighborhood-swallowing sinkholes are rare in the region, the frequency of smaller cave-ins strains municipal resources and raises concerns about public safety.

The details

Omaha's sinkholes are generally shallower and often result from human-made infrastructure interacting with the fine-grained sediment that blankets eastern Nebraska. When a pipe breaks or a sewer leaks, water can carry away loess or fill dirt underground. Omaha's hilly topography aids that movement. The recent Pacific Street sinkhole likely started as a small leak in a water main that went undetected, eventually creating a huge cavity that collapsed under the weight of two vehicles.

  • In February 2026, a sinkhole opened up on Pacific Street in Omaha, swallowing a pickup truck and Jeep.
  • Over the last five years, Omaha city work crews have reported more than 2,100 'cave-ins' ranging from small dips to large sinkholes.

The players

Harmon Maher

A retired geology professor who noticed sediment in a nearby creek before the Pacific Street sinkhole opened up.

Austin Rowser

Omaha's City Engineer, who theorized the Pacific Street sinkhole started with a small water main leak that went undetected.

Matt Joeckel

Nebraska's state geologist and a professor at the University of Nebraska-Lincoln, who explained that Omaha's sinkholes are generally shallower than the massive sinkholes seen in other regions.

Ashlee Dere

A geology professor at the University of Nebraska at Omaha, who said it's surprising Omaha doesn't see more sinkhole problems given its soil type, human-altered topography, and aging infrastructure.

Matt Forir

The geologist for Greene County, Missouri, which includes Springfield and has about 8,000 documented sinkholes, many predating human settlement.

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What they’re saying

“I was sorry I wasn't still teaching. I would've probably spent (time) in class saying, 'Look, here's the relevance. Here's geology in action. Here's a sinkhole.'”

— Harmon Maher, Retired geology professor

“It's great for growing corn, but terrible for building roads.”

— Austin Rowser, Omaha City Engineer

“We're not going to have a situation in which a giant sinkhole suddenly appears … and continues to grow and eat up a neighborhood.”

— Matt Joeckel, Nebraska State Geologist

“It's surprising in that it doesn't cause more problems.”

— Ashlee Dere, UNO Geology Professor

“It would be great if you could see what was going on below the surface before something happened.”

— Matt Joeckel, Nebraska State Geologist

What’s next

The city of Omaha is exploring new ways to diagnose underground infrastructure problems, including using fiber optic cables to detect water line leaks and conducting geological surveys to identify potential trouble spots before sinkholes form.

The takeaway

Omaha's frequent sinkholes and cave-ins, while mostly minor, highlight the challenges cities face in maintaining aging infrastructure built on unstable soil types. While catastrophic, neighborhood-swallowing sinkholes are rare in the region, the constant need to repair smaller cave-ins strains municipal resources and raises concerns about public safety that city leaders are working to address through new detection and prevention methods.