Half of the water flowing through regional river basins starts in so-called ephemeral streams. Last year, the Supreme Court curtailed federal protections for these waterways. By Brad Plumer Last year, ...

After years of essentially being drained dry and left for dead, two legendary streams on the Hawaiian island of Maui came back to life this week, thanks to the work of Earthjustice. The streams were ...

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 small mountain streams that feed many of the West's rivers may face a much drier future. A new study led by NAU researchers found that groundwater-fed streamflow, known as base flow, has been ...

According to hydrologists with the Hawai'i Commission on Water Resource Management, stream-flow measurements are extremely low for this time of year on Maui. "This stream is flowing at record low ...

Small streams, including those that don’t flow all of the time, make up the majority of the country’s waters. They could be a drizzle of snowmelt that runs down a mountainside crease, a small ...

Ephemeral streams – temporary streams that only flow after rainfall or snowmelt – contribute more than 50% of the flow in downstream river systems and likely have a major influence on water quality ...