A Direct Line From Forest Management to Water Supply

Urban water suppliers have had to learn quickly that fire ecology is a major concern in maintaining a secure water supply system.

March 15, 2019, 11:00 AM PDT

By James Brasuell @CasualBrasuell


Sangre de Cristo Mountains

arak7 / Shutterstock

Jasques Leslie begins this story about the connections between watershed and fire protection with an anecdote from the 2011 Las Conchas Fire in New Mexico, which tripled the size of the previously largest wildfire in state history.

"But the fire’s full impact didn’t register until nearly two months later, when a thunderstorm in the Jemez Mountains washed tons of ash and debris into the Rio Grande River, the water source for half of New Mexico’s population and for a major agricultural area. Only an inch of rain fell, but the debris flows the storm generated turned the river black and dumped ash, sediment, and tree and shrub remnants into a major reservoir, requiring a costly cleanup."

According to Leslie, New Mexico is far from alone in learning this lesson: "megafires in similarly dry and overgrown watersheds have ended up contaminating downstream water supplies in numerous areas throughout the western United States, including Phoenix; Denver; Flagstaff, Arizona; and Fort Collins, Colorado. Downstream water managers serving millions of urban residents have learned that the security of their water supplies is tied to the health of upland watersheds that may be hundreds of miles away."

Now, the safety of the water supply is an outcome of for management—just as historic droughts and insect infestations have required completely new approaches to forest management.

Turning attention back to New Mexico after the Las Conchas Fire, residents in the Rio Grande watershed worked with the The Nature Conservancy to establish the Rio Grande Water Fund. That public-private partnership comprises 73 contributing members, including "government agencies at all levels, foundations and other NGOs, local water utilities, and local businesses and residents."

"Together they raised enough money for a 20-year program to restore 600,000 forest acres — enough to support the resilience of the entire central and northern New Mexico portion of the Rio Grande watershed. They have already restored 108,000 acres, and are racing to complete the job before another megafire occurs," according to Leslie.

Tuesday, February 19, 2019 in Yale Environment 360

Street-level view of sharrow symbol on asphalt with parked car in background

How Sharrows Became Cycling’s Most Hated Symbol

Originally designed as a low-cost way to encourage safer road sharing between bikes and cars, the sharrow has become a symbol of the lack of commitment to protected bike infrastructure in many cities.

August 2, 2022 - Denverite

A image of the World's Columbian Exposition overlayed with a picture of Keanu Reeves in the rain from the movie Point Break.

Keanu Reeves Set to Play Daniel Burnham in ‘The Devil in the White City’

Planning is going to get a new level of star power as a limited series adaptation of The Devil in the White City gets ready for television screens in 2024.

August 8, 2022 - Reel Chicago

View from middle of street in downtown Telluride, Colorado with mountains in background

Marrying Urban Identity and Economic Prosperity

A new book posits that truly successful communities have a strong economic base and a firmly rooted sense of place.

August 5, 2022 - Governing

Dallas Freeways

A How-To for ‘Freeway Fighters’

Ten recommendations for effective freeway removal advocacy.

44 minutes ago - Strong Towns

Rendering of elevated rail ine

Miami Rapid Transit Project Moves Forward

The county completed the draft environmental impact study for a monorail and people mover planned as part of its rapid transit system.

1 hour ago - The Next Miami

Cars lined up on a street with fire burning in background

Fire Evacuation Planning at the Community Level

Wildfire planning often focuses on individual buildings, but little guidance exists for effective citywide evacuation planning.

August 10 - The Atlantic

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Hand Drawing Master Plans

This course aims to provide an introduction into Urban Design Sketching focused on how to hand draw master plans using a mix of colored markers.