This is one of a series of highly successful international conferences organized by ASABE and EARTH University focusing on water quality. Over the last decade there has been a maturing of watershed science with new research findings and modeling approaches. These new solutions have resolved many of the problems that first faced watershed managers in dealing with water quality and quantity issues, but there are also emerging impediments to watershed assessments and achieving water quality goals. This international conference 21st CenturyWatershed Technology: Improving Water Quality and Environment will look at emerging problems and new solutions to managing watersheds to meet water quality and quantity standards.