The Internet-driven evolution of communication and science technologies coincides with a parallel evolution in environmental policy and natural resource management. Resource managers must deal increasingly with land use and conservation plans applied at large spatial scales (watersheds, landscapes, states, regions) involving multiple interacting agencies and stakeholders. Many federal, state, and private organizations have similar objectives, questions, and data and analysis needs. This is motivating the development of community-supported watershed databases and analysis systems of common structure and function across large geographic areas. Numerous state and regional analysis systems are targeting natural resource issues involving management of forests, freshwater fishes, wildlife, and water quality and supply.