Groundwater hydrology examines the occurrence, movement and quality of subsurface water within geological formations. Most accessible groundwater resides in aquifers—porous or fractured rock layers ...

In mountain regions like the Rockies, headwater streams make up more than 70% of the river network and support the downstream waterways and communities. These headwaters are also home to many forms of ...

Groundwater is rapidly declining across the globe, often at accelerating rates. Writing in the journal Nature, UC Santa Barbara researchers present the largest assessment of groundwater levels around ...

The numbers are so vast, so enticing that they tantalize like a desert oasis. Deep below the surface in Arizona – roughly a quarter mile underground – sit large volumes of water that are less salty ...