The CUAHSI Hydrologic Information System
The CUAHSI Hydrologic Information System (HIS) is an internet based system for sharing water data. The system employs a service oriented architecture (SOA) that is similar to the way in which many federal government agencies transmit their data and has enabled an unprecendented access to a variety of data sources including the USGS, EPA, NCDC, in addition to academic researchers.
The CUAHSI HIS was originally developed as a research project funded by the National Science Foundation and led by Principal Investigator Dr. David Maidment (Univeristy of Texas at Austin). Co-PI's on this project included David Tarboton (Utah State University), Ilya Zaslavsky (San Diego Supercomputer Center), Daniel Ames (Idaho State University; present affiliation - Brigham Young University), and Jon Goodall (University of South Carolina).
As a system, HIS operates similarly to the way in which most people browse the internet. There is a server that hosts data, a central catalog that mines data and enables discovery (like a search engine such as Google), and a client that allows you to browse data (like a web browser such as Internet Explorer or Google Chrome). HIS employs a family of web services called WaterOneFlow and a strain of XML called WaterML to transfer data between computers over the internet.