The 2025 water year took a big step forward in February after atmospheric rivers delivered rain and snow to California.

Conventional knowledge in California about whether significant rainfall is in store for any given year has largely been tied up in the climate patterns of El Niño and La Niña. But a new study ...

"polar vortex" usually refers to the gigantic circular upper air weather pattern in the Arctic region, enveloping the North ...

Water sharing between Canada and the United States has long been a contentious issue. In 2005, former Alberta premier Peter ...

Southern California faces the continued risk of rock and mudslides on wildfire-scarred hillsides after heavy rains sent debris across several roadways ...

Nine years ago this week I visited Yosemite National Park in the Sierra Nevada of California. I had one goal: photograph ...

Last month’s wildfires in California destroyed thousands of homes, killed at least 29 people and will likely cost hundreds of ...

Scientists generally classify streams in one of two groups. Perennial streams flow year-round, while others dry out ...