Here is a reference to a few GIS-related web sites for you to explore:

Natural Hazards Sites:

• Tsunami Hazard Map Viewer

Free Tools and Scripts:

• ArcExplorer by ESRI (Free GIS Data Viewer)
• GeoMedia Viewer by Intergraph (Free GIS Data Viewer)
• Top Ten Arc Scripts

Hawaii GIS and Geography Sites:

• City and County of Honolulu GIS
• ESRI Oahu User Group
• ESRI Hawaii Island User Group
• ESRI Maui User Group
• ESRI Kauai User Group
• Hawaii Geographic Information Coordinating Council (HIGICC)
• Dept of Urban and Regional Planning, University of Hawaii
• Hawaii Coastal Erosion Website
• Hawaii Coastal Geology Group – Data Resources Index
• Hawaii Biodiversity and Mapping Program
• Hawaii/Pacific Islands Liaison (NODC/NCDDC) Datasets
• Hawaii State Data Center Reports and Tables (DBEDT-READ)
• Asia Pacific Natural Hazards Information Network (PDC)
• TMK Plat Maps from County Websites:
  • C&C of Honolulu
  • County of Kauai
  • County of Maui
  • County of Hawaii
• Rainfall Atlas of Hawaii (U.H. Geography Dept.)
• West Maui Coastal Uses Participatory Mapping Project
• Kipuka Database (Office of Hawaiian Affairs)

Other Geography & GIS Sites:

• Census Bureau – TIGER Products
• Digital Coast – NOAA Coastal Services Center
• FGDC – Federal Geographic Data Committee
• NASA – Remote Sensing Data and Information
• National Center for Geographic Information and Analysis
• NOAA’s National Ocean Service
• Pacific Disaster Center
• Open GIS Consortium
• U.S. Geological Survey