Water Residence Times (IMAGE) University of Washington Caption The team's model of water residence times in the northwest portion of Willapa Bay. Blue and turquoise indicate residence times of less than one tidal cycle. Red and orange show residence times of 5 or more tidal cycles. Credit Wheat, Banas and Ruesink, 2019, <em>Estuarine, Coastal and Shelf Science</em> Usage Restrictions Must include credit 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.