Waterfall Record

Niagara Falls

Niagara Falls is a cataract system on the Niagara River, where Great Lakes outflow crosses the Niagara Escarpment and enters a deeply cut gorge.

Why This Record Matters

A waterfall shaped by escarpment retreat

Niagara is a clear record of resistant caprock, plunge-pool erosion, gorge migration, and Great Lakes drainage concentrated in one short river.

TypeEscarpment cataract

A major drop across layered bedrock.

RiverNiagara River

The channel connects Lake Erie and Lake Ontario.

ProcessGorge retreat

Falling water cuts into weaker layers below caprock.

Linked BasinGreat Lakes

The falls are part of a large freshwater drainage system.

Overview

What Niagara Falls is

Niagara Falls is formed where the Niagara River crosses a bedrock escarpment between two Great Lakes. The system includes separate falls sections and a downstream gorge.

Its physical record is compact, legible, and strongly tied to post-glacial drainage.

Escarpment

Caprock, plunge pools, and gorge migration

Harder rock at the brink overlies weaker material that can be eroded by turbulent falling water. This contrast helps the waterfall edge retreat upstream over time.

Brink

Layered bedrock

Caprock controls the visible edge.

Gorge

Retreat path

The gorge records earlier waterfall positions.

Drainage

Great Lakes outflow

Large lake storage supports persistent river discharge.

Setting

Freshwater corridor between lakes

The Niagara River is short, but it carries major regional drainage between lakes. That concentration of flow gives the falls their scale.