The Supreme Court ruled last year that rivers that only flow in response to weather events -- called ephemeral streams -- do not fall under the protection of the Clean Water Act. New research suggests ...

The normally dry Rillito River and Tanque Verde Creek have been flowing steadily in recent weeks even though Tucson has had no rain since a mere 0.01 of an inch on Jan. 24. The shallow but persistent ...

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ASHEVILLE - A reader asks how it's possible for streams to continue flowing at the highest peaks of mountains, seemingly defying gravity. Do you have a question for Answer Man or Answer Woman? Email ...

Maui Nui stream flow conditions are shown here on March 3. According to the Hawai‘i Department of Land and Natural Resources, stream flows on Maui are at record lows and that’s a cause for concern ...

In the face of climate change and worsening cycles of drought, California water managers have been increasingly focused on the precise tracking of water resources. Snowpack in the Sierra Nevada is ...