Home | Groundwater Resource Hub

Cosumnes River's Michigan Bar — 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.

Learn More

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

Featured Resources

First-ever Global GDE Map

Visit the first-ever map of groundwater dependent ecosystems in arid regions around the world.
View the map
One Cool Place | The Amargosa

One Cool Place | An Ode to the Amargosa. Excerpts from a poetic tribute to the Amargosa Desert River by Dr. Sophie Parker.
View the video
Thresholds for Ecosystems

Download the Groundwater Thresholds for Ecosystems guide to learn a practicable approach for quantifying groundwater conditions that are protective of GDEs.
Download the Guide

See Where We Work

San Joaquin Valley Delta — San Joaquin Valley Wetlands in the San Joaquin Valley of California. © Lara Weatherly