Summer Streamflow and Fish Survival
Oversummer flow and survival study
Since 2010, CA Sea Grant has conducted a study to correlate flow and environmental conditions with oversummer survival of juvenile coho, through a collaboration known as the Russian River Coho Water Resources Partnership. The Partnership, formed in 2009, is working to improve streamflow for fish and water supply reliability for landowners in five Russian River tributaries deemed critical to coho salmon recovery: Dutch Bill, Green Valley, Mark West, Mill and Grape creeks. Partners work with landowners to develop streamflow enhancement projects to augment or forebear streamflow during the dry summer months. Sea Grant's role is to evaluate whether survival of juvenile coho is increasing as a result of those projects and to contribute to a better understanding of how much water coho need to survive throughout the dry summer months. Follow these links to learn more about our methods and study outcomes.
The Partnership has also developed Streamflow Improvement Plans for Mill, Grape and Dutch Bill creeks, and is currently working on one for Green Valley Creek. This effort is funded by the National Fish and Wildlife Foundation, with additional support from the Sonoma Water.