The purpose of this report is to present and interpret trends in water quality data collected from project inception through September 30, 1982 as part of the Blue Creek Watershed project. This discussion covers 29 month's worth of data. The primary purpose of this monitoring and evaluation project was to determine the actual yield of pollutants from a variety of agricultural practices to downstream receiving water and its effect upon the water quality and reasonable uses of the water resources. Monitoring and evaluation of actual Resource Management System implementation progress on sub-watersheds and yield of pollutants to the major tributary stream and public water supply lake will allow for a determination of nonpoint source yields for the lands requiring treatment to reduce water quality problems, and the impact of Resource Management Systems on both stream and lake quality.