Sea ice data has significant scientific value for climate studies, environmental impact studies, and engineering studies for the construction of facilities in Arctic waters, as well as support for tourism and fishing planning. Large collections of such data are acquired, compiled, produced and maintained by national and international agencies such as the Canadian Ice Service (CIS). However, current data dissemination and distribution practices do not foster an easy access to and use of the data, especially given the huge amount of archived sea ice data and the nature of their spatial changes and frequent temporal variations. This paper reports an effort in developing a web-based ice information system using geographical information system (GIS) technology. The system provides web-based tools to facilitate the exploration, visualization, analysis and downloading of historical sea ice data. The CIS Archive and related services are examined for the system design and development.