Homepage for tsunami research with links to information and images on basics, tsunamis in the Pacific Northwest, the 1998 Papua New Guinea tsunami, research on specific tsunamis, and animations in various formats.
USGS water resources home page for Washington State with links to detailed hydrologic studies and real-time data on streamflow, ground and surface water, water use, and water quality, plus GIS data, district and publications information.
Description of bryophytes (mosses, liverworts, and hornworts) and lichens (dual organisms of a fungus and an alga or a cyanobacterium) that are part of forest ecosystems in the Pacific Northwest with information on habitat and conservation.
Educational volcano site providing answers to frequently asked volcano questions with links to other general information on volcanoes and to information on specific volcanoes including the Cascade Range volcanoes.
The Puget Sound Basin is a National Water Quality Assessment (NAWQA) Program study unit for studying the status, trends, and changes affecting the nation's water quality. Site links to data, publications, and results.
Links to geologic information on western states: Alaska, Arizona, California, Hawaii, Idaho, Nevada and Oregon including information on coastal and marine geology, mineral resources, earthquakes, landslides, earthquake hazards and geologic maps.