King County conducted physical and biological monitoring between 2010 and 2013 in the Lake Washington/Cedar/Sammamish (WRIA 8) watershed using common survey protocols and a probabilistic survey design. Hydrologic monitoring was also conducted at several locations to supplement physical and biological monitoring. The objectives of the project were to: (1) characterize conditions in small salmon streams using a spatially balanced, probabilistic sampling approach; (2) investigate relationships between landscape, hydrologic, biological and habitat metrics; (3) inform adaptive management actions recommended by the WRIA 8 Chinook Salmon Conservation Plan; and (4) communicate findings, methods and analytical approaches to local and regional forums. Data collected included habitat, fish composition, macroinvertebrate composition, hydrology, temperature, and land cover. Results included precision estimates (consistency of repeated measurements) of common habitat indicators, status and trend assessments, an analysis of land-cover/hydrology/habitat/biology relationships, and trend detection power analysis.