Methodology

ChasingFalls is a reference to 293 named U.S. waterfalls across 46 states. Every page is built from public records, and every waterfall links back to the sources behind its facts. Here is exactly how the data is compiled and verified.

Where the data comes from

We start from the USGS Geographic Names Information System (GNIS), the federal government’s official register of place names. GNIS provides each waterfall’s official name, the state and county it falls in, and its coordinates. We then pair each waterfall with documented details from the agency that manages the land — the National Park Service, the U.S. Forest Service, or a state park system — plus established references such as the World Waterfall Database for height and form.

How we choose a height

Reported waterfall heights frequently disagree, and the disagreement is usually honest. Some sources report a single vertical drop; others report the cumulative fall of a long, stepped cascade. Remote falls are also genuinely hard to survey. Where sources differ, we use the best-documented figure and note the uncertainty on the waterfall’s page rather than presenting a single number as settled fact. Close rankings on our tallest waterfalls list should be treated as approximate.

Seasonal flow and timing

A waterfall’s “best season” depends on its water source. We describe peak-flow windows from documented patterns — spring snowmelt for high-country falls, rain-fed peaks elsewhere — and point readers to the live USGS streamflow gage on the feeding stream where one exists. We never claim a personal visit; timing guidance is derived from data and land-manager information.

How content is produced and reviewed

ChasingFalls is produced by an AI-augmented editorial team. Research and first drafts are AI-assisted, but every waterfall’s facts are compiled from the public records above and reviewed by the responsible desk editor against those sources before publication. We describe places from documented facts and cited sources, not from personal experience. See our Editorial Policy and Fact-Checking Policy for the full standards, and our Corrections Policy to report an error.

Limitations

This guide is not exhaustive — it covers documented, notable waterfalls and grows over time. Coordinates point to the feature, not necessarily a trailhead or legal parking. Access, fees, permits, and conditions change; the managing agency’s current page is always the authority. Please follow Leave No Trace principles and heed posted safety closures — moving water near a waterfall is dangerous.