Researchers Follow the Water (IMAGE) University of California - Berkeley Caption David Dralle of Sacramento State University investigates water emerging from a spring. Researchers at the Eel River Critical Zone Observatory, led by UC Berkeley geomorphologist William Dietrich, have used hillslope-scale insights into how water is stored below ground to explain state-wide patterns of plant drought response. Credit Jesse Hahm, UC Berkeley Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.