Hydroclimatology data collections contain data that are specifically suitable for the study of surface-water conditions, and are focused primarily on North America. What about the two CD's are we going to archive them? See THIS LINK.

The ORNL DAAC Hydroclimatology Collections Data archive includes the following data products:

• Surface Water Elevation and Quality, Peace-Athabasca Delta, Canada, 2006-2007
• USGS Hydro-climatic data network (HCDN): Monthly Climate Database, 1951-1990

The following Hydroclimatology Collections resources are maintained by the ORNL DAAC:

• Search Regional and Global Sources for Hydroclimatology Collections data