The CUAHSI Hydrologic Information System

HIS Triangle

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.

About the CUAHSI Water Data Center

The CUAHSI Water Data Center (WDC) is a facility funded by the National Science Foundation to enable access to water data holdings, create and maintain data discovery tools, and provide archival and data publishing capabilities. The WDC is funded by NSF grant number 1248152. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.