Temperature Map (IMAGE) University of Washington Caption The Wood River basin, slightly bigger than the state of Rhode Island, is dotted with streams with different average temperatures – in Fahrenheit, 40 to 55 degrees – meaning salmon return to spawn at different times. Stream are close enough that animals like brown bears can have salmon for most of the summer by moving between streams Credit University of Washington Usage Restrictions Credit required 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.