Abstract : Under NSIP, the database and software systems for receiving and processing streamflow data will move from District-based computers to a centralized multi-server system that takes advantage of the Internet to provide high reliability and economy of scale. Collection and review of the data can occur at locations remote from the locations used for storage and access. The Database System will contain separate components, one each for data collection, review, routing, and archiving, and access. The functions of both data collection and review will be performed at Data Processing Centers, whereas archiving and access functions will be centralized at Data Access Centers, which deliver streamflow information to the public through associated Internet interfaces.