The Most Endangered Rivers in the United States

American Rivers has announced their annual list of the most endangered rivers in the country.

1 minute read

April 17, 2019, 5:00 AM PDT

By James Brasuell @CasualBrasuell


Gila National Forest

Traveller70 / Shutterstock

The 2019 list of "America's Most Endangered Rivers" raises alarms and calls for actions about the threats facing ten rivers, including some of the most famous and picturesque rivers in the country (previous "Endangered River coverage on Planetizen).

Leading the list is the Gila River in New Mexico, facing threats from a diversion project expected to release an environmental impact statement under the National Environment Policy Act this month. Heather Hansman provides detailed coverage of the Gila River for the Outside magazine, timed to promote and detail the announcement of the list.

Hansman writes: "Whatever part of water use you might think is most important—from farms to fish to floating—the Gila is a stronghold, but right now its tenability as a habitat and a water source is threatened by nature and by humans. This year is a tipping point."

Here is the complete list:

  1. Gila River, New Mexico
  2. Hudson River, New York
  3. The Upper Mississippi River (multiple states)
  4. Green-Duwamish River, Washington
  5. Willamette River, Oregon
  6. Chilkat River, Alaska
  7. South Fork Salmon River, Idaho
  8. Buffalo National River, Arkansas
  9. Big Darby Creek, Ohio
  10. Stikine River, Alaska

Risks facing rivers are numerous, ranging between climate change, environmentally insensitive infrastructure development, illegal levees, mines, and water pollution from industrial and agriculture operations.

Tuesday, April 16, 2019 in American Rivers

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

Overlapping highways

The state-sanctioned urbicide of Austin

People don’t kill cities. Freeways do.

September 8, 2026 - Benjamin Schneider

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

Skyscrapers in Jersey City.

New Jersey’s second-largest city bans standalone data centers

Jersey City will continue to allow co-location facilities, such as those meant for research institutions that store their own data.

September 4, 2026 - The Cool Down

A New Jersey train approaches people waiting at the station.

Amtrak not solely to blame for New Jersey commuter rail's unreliability, report finds

A new study from the Garden State Initiative found that NJ Transit’s budget grew 20% across a 4 year period, but reliability declined significantly over the same period.

September 15 - Mass Transit

A tall, gray power plant billows smoke into a blue sky.

EPA erases limits on planet-warming pollution from power plants

Under Monday’s plan, power plants would still have some limits on how much mercury, arsenic and other contaminants they can emit.

September 15 - New York Times

A white RAPID bus. The lower half is light blue, and says RAPID in purple text. The bus is half visible, appearing from the left side of the image.

Phoenix announces new on-demand transit service, more frequent RAPID buses

Both new services will launch in October, and are part of Phoenix's Project Effective Access Solutions for Easing Congestion.

September 15 - KJZZ

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.