Niagara Falls is slowly eroding backward toward Lake Erie

Niagara Falls flows over 400-million-year-old layered rock

The falls cut through distinct layers of ancient rock: a hard cap of Lockport Dolomite sits atop softer layers of Rochester and Queenston Shale. This structure allows the falls to maintain a steep vertical drop as erosion undercuts the caprock.

Water from four Great Lakes feeds Niagara Falls

Niagara Falls is powered by water from Lakes Superior, Michigan, Huron, and Erie. The Great Lakes basin spans over 260,000 square miles and holds nearly 20% of the world's surface freshwater—about two-thirds of which passes over the falls.

Whirlpool Rapids formed in a matter of days during the last ice age

Niagara Falls' dramatic whirlpool rapids were created in a matter of weeks when the retreating Falls intersected a buried ice age riverbed—generating North America's largest standing waves.

Engineers shut off Niagara's American Falls for six months in 1969

In June 1969, the US Army Corps of Engineers diverted the Niagara River to halt flow over the American Falls. The dry riverbed allowed geologists to study erosion and remove dangerous rock buildup.

Niagara’s bedrock holds 440-million-year-old coral fossils

The Lockport Dolomite that caps Niagara Falls is composed of fossilized coral reefs from a tropical sea that once covered the region 440 million years ago.

Niagara's flow is changed artificially to accommodate tourists and power generation

The natural wonder is also the site of great engineering feats, from the Welland Dam that first allowed ships to travel from the upper lakes to the St. Lawrence Seaway, to one of the first hydroelectric dams.

Niagara Falls stopped flowing for a full day in 1848 due to ice

In March 1848, ice jams halted the Niagara River entirely for over 24 hours, allowing people to walk on the riverbed—a rare event that drew international headlines.

The US Army Corps of Engineers once stopped water from flowing into Niagara Falls to prevent long-term erosion.

Niagara Falls generates its own microclimate

Constant mist from the Falls produces localized weather effects, including rare ice formations that can rise over 100 feet high in winter.

Niagara Falls consists of three different waterfalls

The famous landmark is made up of the American, Canadian, and Bridal Veil falls. Of the three, Bridal Veil is the smallest and forms the other boundary of a small slice of area known as Luna Island, where tourists can view the scene.

The Great Lakes hold almost 20% of the world's surface freshwater

Formed by retreating glaciers, the Great Lakes system feeds Niagara Falls through the Niagara River. Together, the lakes contain about 23 quadrillion liters (5,400 cubic miles) of water, enough to cover the land portion of the continental US to a depth of 3 meters (9.84 feet).

Niagara Falls is New York State’s biggest electricity producer

The Robert Moses Niagara Power Plant and Lewiston Pump-Generating Plant together produce up to 2.6 million kilowatts—providing about 20% of New York State’s hydropower and supplying electricity to over 3 million homes.

The Canadian side of Niagara Falls has many tourist attractions

The Canadian side features Ripley's Believe it or Not, Louis Tussaud's Waxworks, tunnels behind the Falls and more. A short walk from the falls leads to Clifton Hill, packed with arcades, mini golf, haunted houses, and carnival-style attractions.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Niagara’s frozen river once hosted winter carnivals

Before a 1912 collapse, winter ice bridges across the river were so thick that entrepreneurs built bars, photo studios, and entire carnival midways on the frozen surface.

Niagara Falls was a key Underground Railroad crossing point

In the mid-1800s, the Suspension Bridge near Niagara Falls connected the US to Canada and served as a frequent crossing location for people escaping slavery via the Underground Railroad.

You can take a boat ride directly into the mist of Niagara Falls

The Maid of the Mist takes passengers on a thrilling boat ride to the very base of Horseshoe Falls—surrounding them with roaring water and thick mist.

Niagara’s honeymoon tourism was influenced by Napoleon's brother

Niagara falls was once dubbed the “honeymoon capital of the world.” This tradition partially began with a visit by Napoleon's brother Jerome and his wife in 1804.

The Erie Canal runs 363 miles from Albany to Buffalo

Mostly using the low elevations of the Mohawk River Valley, the canal project connected the Great Lakes to the Atlantic seaboard for the first time. This site has a series of old and new maps of the canal.

Niagara Falls helped decide the battle between AC and DC power

In the 1890s, Niagara Falls became the proving ground for alternating current (AC) when Tesla and Westinghouse built the first large-scale AC hydroelectric plant—defeating Edison’s push for direct current (DC) in the US electrical system.

Reflections on the Erie Canal’s 200-year history

Reflections on the Erie Canal traces the waterway from its 1825 opening to its evolving role today. Each short video in this 10-part series explores a different aspect of the canal and its legacy today.

The world's first AC hydroelectric power plant incorporated Tesla's engineering

Built at Niagara Falls, New York, the plant alternating current electricity was hailed as the future of power generation. Tesla's fascination with Niagara Falls is traced to his seeing a photo of the waterfalls when he was still a child.

Niagara power helped electrify early New York City

Tesla's AC system at Niagara Falls was so successful that electricity generated there lit up Broadway theaters and powered NYC's subway system in the early 1900s.

The original canal had 83 different hand-operated locks

Locks are gated chambers that raise and lower boats between stretches of water at different levels. On the Erie Canal, 83 such locks managed a 565-foot elevation change from the Hudson River to Lake Erie.

The Love Canal disaster exposed the dangers of buried toxic waste

In the late 1970s, residents of Niagara Falls, New York, discovered their neighborhood was built atop 20,000 tons of chemical waste. Leaking toxins caused illness and birth defects, sparking nationwide outrage and leading to the creation of the EPA's Superfund cleanup program in 1980.

Travel the 363-mile Erie Canal, the waterway that cut freight costs by 90% and opened the American frontier.

The Erie Canal was opened Oct. 25, 1825, with a group of boats from Buffalo to NYC

The unlikely engineering project connecting the Midwest to the Atlantic saw a ceremonious opening as Governor Dewitt Clinton rode with a flotilla of boats from Buffalo on Lake Erie to New York City.

Learn more about Niagara’s death-defying daredevils

This podcast from the Niagara Falls Daredevil Museum explores 19th‑ and early 20th‑century Niagara daredevils—like tightrope walker Charles Blondin, barrel-stunter Annie Edson Taylor, and Sam Patch—detailing their feats, dangers, and public spectacle.

Infrastructure projects in New York are much more difficult today

The Erie Canal was one of the most ambitious infrastructure projects in American history. Many have said such an effort would be impossible today. This article explores why that is the case and ponders the future of large-scale American infrastructure development.

Some invasive species can provide benefits to ecosystems over time

In the 1990s, round gobies were introduced into the Great Lakes, rapidly spreading and competing with local sculpin and logperch. However, Lake Erie watersnakes, which were on the endangered species list, shifted their diet to be almost entirely made up of the plentiful round gobies, contributing to their loss of endangered status in 2011.

The Erie Canal fueled a surge in westward settlement

By providing cheap, reliable transport to the interior, the canal made western lands more accessible. Farmers, traders, and immigrants moved into the Great Lakes region, accelerating population growth.

DeWitt Clinton’s “Big Ditch” gamble transformed New York

Mocked as “Clinton’s Folly” and “Clinton’s Big Ditch,” New York Gov. DeWitt Clinton championed the Erie Canal against skeptics. His political drive secured funding for the project in 1817.

The Erie Canal was built without a single dollar of federal funding

After President Madison and Congress rejected the project, New York State financed the 363-mile Erie Canal entirely on its own—authorizing $7M in bonds in 1817.

Hurricane Helene dumped enough water to fill Lake Tahoe

Alongside a rainstorm that moved into the region ahead of it, the hurricane released an unprecedented 40 trillion gallons of rain on the southeastern US, causing catastrophic flooding and at least 100 deaths. Meteorologists suggest climate change is exacerbating the severity of such events.

The moon is moving 3.8 centimeters farther away from Earth each year

Driven by tidal forces, the effect is minimal and slow, ensuring stable tidal patterns and lunar cycles. Earth's rotation slows down as the Moon gains orbital momentum, slowly lengthening the day over time.

The 1975 sinking of the Edmund Fitzgerald spurred a number of maritime changes

One of the worst Great Lakes shipwrecks in modern history, the freighter sank during an intense storm on Lake Superior that reportedly produced 50-foot waves. The exact cause remains unknown, and the disaster remains in public consciousness today.

Local limestone made waterproof cement for the Erie Canal

In 1818, engineer Canvass White discovered that limestone near Chittenango, New York, could be processed into hydraulic (or waterproof) cement. This breakthrough replaced costly European imports, enabling watertight locks and aqueducts and revolutionizing American construction.

The Erie Canal reduced freight costs by 90%

Before the canal, shipping goods overland cost about $100 per ton. After its completion in 1825, rates fell to just $10—making western farm products competitive in eastern markets for the first time.

How is climate change reshaping the Great Northern Wilderness?

This article focuses on how climate change is drastically altering Kluane National Park in Canada and nearby areas in Alaska. Glaciers are struggling: One large glacier is melting so fast that it has redirected a river's flow, a phenomenon that...

Mapping Michigan's shipwrecks

For centuries, the Great Lakes have provided vital access to the Midwest from the Atlantic Ocean, allowing the establishment of key trading outposts and ultimately the growth of major cities in the region. An estimated 6,000 vessels were lost on the Great Lakes with approximately 1,500 of these ships located in Michigan waters. Explore the deadly legacy of the region with resources pulled together by the Michigan History Center.

Side-by-side shots of once-dry California lakes now filled

In late 2022, much of California was in drought; by early 2023, after a series of downpours from atmospheric rivers, much of the state's reservoirs had been re-filled. See the dramatic difference in this series of photos.

Although the term 'glacial pace' is associated with the slow movement of glaciers, during glacier surging, these massive bodies of ice can move over 60 meters (200 feet) a day.

Rising sea levels due to climate change may be slowing Earth's rotation

A 2024 PNAS study found that from 2000 to 2020, the length of a day increased at a rate of 1.33 milliseconds per century, an unprecedented amount in the 3.6 million years of day-length changes reconstructed from an analysis of benthic foraminifera fossils. Researchers suggest the slowing comes from changing ice sheets redistributing planetary mass.

The average eruption cycle of the Yellowstone supervolcano is 735,000 years

Eruptions a little over 2 million, 1.3 million, and 630,000 years ago indicate that the eruption is not imminent, though the sample size is small. Recent analysis reveals magma pockets are not interconnected, reducing eruption risk.

Many believe a cataclysmic volcanic eruption is imminent at Yellowstone, though experts say it is unlikely

Mike Poland, a scientist at the Yellowstone Volcano Observatory, estimates the likelihood of the event at one in a million. He cautions, though, that the park poses other potential dangers, including steam explosions and earthquakes.

Hurricanes can grow by replacing their eyewall

A second outer eyewall can form around the primary eyewall surrounding a hurricane's eye. During an eyewall replacement cycle, the outer wall can weaken, collapse, and replace the inner wall, temporarily weakening the storm before it strengthens and grows.

Explore the technical side of the Erie Canal

Listen to this podcast from Northwestern University exploring the canal’s groundbreaking infrastructure—from locks and aqueducts to its role as America’s first large-scale engineered waterway.

Leaning Italian tower could fall after nine centuries

Italian officials have secured the area around one of two 12th Century towers in Bologna, fearing its leaning could lead to collapse. Could it fall? Read up on the city's efforts to secure it here.

If, not when: An earthquake is destined to destroy the Pacific Northwest.

When the Cascadia fault line ruptures, it could be North America’s worst natural disaster in recorded history. Read a deep dive into the history of the region and the potential impact of the eventual seismic boom.

Before dynamite was invented, Erie Canal builders blasted rock with gunpowder

Constructed decades before the invention of dynamite, the Erie Canal’s toughest obstacles were blasted through using black powder charges.