Friday Eye Candy: Time-Lapse Shows How Rivers Meander

"No man ever steps in the same river twice, for it's not the same river and he's not the same man." -Heraclitus, as quoted by Plato in Cratylus.

1 minute read

February 6, 2015, 7:00 AM PST

By James Brasuell @CasualBrasuell


Los Angeles River flood

By United States. Army. Corps of Engineers. Engineer Office [Public domain] / Wikimedia Commons

Joseph Stromberg takes inspiration from one of the entries in Time Magazine's Timeleapse project—the satellite images of Ucayali River, which from 1984 to 2012 meandered widely around its corner of Peru.

Stromberg uses the time-lapse as the impetus to explain the physical forces that cause rivers meander. Also there's a point to be made, familiar to cities built along rivers around the world: "We think of rivers as stable features of the landscape: something we can build towns and cities next to, and expect to stay in the same spot permanently. But in reality, they're constantly moving — and as much as we try it's impossible to keep them entirely under control."

Thursday, February 5, 2015 in Vox

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Wastewater pouring out from a pipe.

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage

Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

April 13, 2025 - Inside Climate News

High-rise apartment buildings in Waikiki, Hawaii with steep green mountains in background.

Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss

The plan would reduce visitor accommodation by 25% resulting in 1,900 jobs lost.

April 6, 2025 - Honolulu Civil Beat

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 10, 2025 - Diana Ionescu

A line of white wind turbines surrounded by wheat and soybean fields with a cloudy blue sky in the background.

Wind Energy on the Rise Despite Federal Policy Reversal

The Trump administration is revoking federal support for renewable energy, but demand for new projects continues unabated.

April 15 - Fast Company

Red and white Caltrain train.

Passengers Flock to Caltrain After Electrification

The new electric trains are running faster and more reliably, leading to strong ridership growth on the Bay Area rail system.

April 15 - Office of Governor Gavin Newsom

View up at brick Catholic church towers and modern high-rise buildings.

Texas Churches Rally Behind ‘Yes in God’s Back Yard’ Legislation

Religious leaders want the state to reduce zoning regulations to streamline leasing church-owned land to housing developers.

April 15 - NBC Dallas