John Day River (image) University of Washington Share Print E-Mail Caption Fish species in many river systems, including the John Day River pictured, will face the challenge of coping with warmer waters in the future. Credit University of Washington Usage Restrictions Photo credit required. Share Print E-Mail 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.