The Nature Conservancy
Groundwater Resource Hub
Mapping Groundwater Dependent Ecosystems: A first-of-its-kind map of where there are Groundwater Dependent Ecosystems in arid regions around the world.

Michigan Bar View of oak woodlands and riparian habitat along the Michigan Bar in the Cosumnes River watershed, California. © Karen Gregg Elliott
Overview
A Valuable Hidden Resource
Groundwater is our most valuable hidden resource. While largely out of site, it is critical for biodiversity, growing food, providing nearly half the world's drinking water, and other needs for a healthy planet. Visit our 'Groundwater 101' page to learn more.

Dunlin Flocks of Dunlin in flooded rice fields in Colusa, California. © Drew Kelly for The Nature Conservancy