This is a sources sought announcement for market research to identify potential sources for monitoring and evaluating Russian River Coho Salmon, including juvenile and adult survival, spawning success, and abundance trends. The work will be performed primarily in Sonoma County at the Don Clausen Fish Hatchery and tributaries such as Willow, Dutch Bill, Green Valley, and Mill creeks. The anticipated period of performance is one base year with three option years. No budget amount or solicitation is currently available; interested parties must submit a statement of capability and relevant experience.