Bringing Urban Rivers Back Into the Daylight

"Daylighting" rivers in urban areas is the process of uncovering waterways to beautify cities, support habitats, and aid drainage.

1 minute read

September 15, 2017, 5:00 AM PDT

By Casey Brazeal @northandclark


Cheonggyecheon Daylighting

The Cheonggyecheon daylighting project in central Seoul. | brian kusler / Flickr

In cities where space is at a premium, many rivers are covered and built over. But around the world there's a growing trend among cities to "daylight" or uncover portions of their rivers. A daylighted portion of river can add beauty to an area and make it more friendly to local wildlife. "More recently in the US, $19m was invested to daylight the Saw Mill River in downtown Yonkers, New York. The aim was to regenerate the area and bring back habitat for a range of species including muskrats and snapping turtles," David Cox writes in the Guardian.

Another impetus for daylighting rivers is the earth's warming climate. "Planners hope to utilise the passive cooling provided by rivers to help combat the urban heat island effect, and most of all, offer benefits in terms of flood protection," Cox reports.

Friday, September 8, 2017 in The Guardian

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

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

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

Blue and white Seattle Link light rail train exiting concrete Downtown Bellevue Tunnel in Bellevue, WA.

Why Should We Subsidize Public Transportation?

Many public transit agencies face financial stress due to rising costs, declining fare revenue, and declining subsidies. Transit advocates must provide a strong business case for increasing public transit funding.

April 7, 2025 - Todd Litman

Silhouette of man holding on to back of bicycle ridden by woman with Eiffel Tower in background.

Paris Bike Boom Leads to Steep Drop in Air Pollution

The French city’s air quality has improved dramatically in the past 20 years, coinciding with a growth in cycling.

2 hours ago - Momentum Magazine

Multifamily housing under construction.

Why Housing Costs More to Build in California Than in Texas

Hard costs like labor and materials combined with ‘soft’ costs such as permitting make building in the San Francisco Bay Area almost three times as costly as in Texas cities.

2 hours ago - San Francisco Chronicle

Western coyote looking at camera in grassy field.

San Diego County Sees a Rise in Urban Coyotes

San Diego County experiences a rise in urban coyotes, as sightings become prevalent throughout its urban neighbourhoods and surrounding areas.

4 hours ago - Fox 5