Plunge pool vs. Sediment filled (IMAGE) Geological Society of America Caption : Example of sediment filling and evacuation of sediment in a small waterfall plunge pool on Arroyo Seco, San Gabriel Mountains, California. Top: Plunge pool, free of sediment, in June 2006 with swimmer leaping. Bottom: The same plunge pool filled with sediment in March 2010 following a wildfire in 2009 that overwhelmed the pool with sediment. Credit Top photo credit: Kelin X. Whipple, bottom photo credit: Michael P. Lamb. Usage Restrictions Top photo credit: Kelin X. Whipple, bottom photo credit: Michael P. Lamb. 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.