On July 12, 2007 the Water Science and Technology Board plans to organize and host a colloquium that airs and addresses key water quality, water quantity, and related land resources implications of biofuel production in the United States. For different scenarios for growth in biofuel demand, the form of biomass used for biofuel production, emerging technologies and other factors, the following issues will be addressed:* How much water and land might be required to grow different kinds of biomass in different regions? Where is water availability likely to be a limiting factor? * What are the possible, or likely, water quality effects associated with increases in production of different kinds of biomass? * What are the water requirements of existing and proposed production plants, and what water quality problems may be associated with them? * What promising agricultural practices and technologies might help reduce water use or minimize water pollution associated with biofuels production? * What policy, regulatory, and legal changes might help address some of these water-use and water-quality issues? The project is sponsored by the McKnight Foundation, Energy Foundation, National Science Foundation, Environmental Protection Agency, and the National Research Council Fund.The approximate start date for the project is February 1, 2007.A short report and derivative brochure are expected to be released at the end of the project in approximately 9 months.