Skip to main content
U.S. flag

An official website of the United States government

Drone shot of Cow Creek near Riddle, OR

Detailed Description

This aerial image was captured during a drone flight for drone-based surface velocimetry, which is a method for measuring the speed of water at the surface of a river or stream using video footage and computer software. This technique measures how fast water is moving by analyzing how visible features on the water surface (like foam, leaves, or small ripples) travel over time.

Sources/Usage

Public Domain.

Was this page helpful?