Elizabeth ClarkLinksData & Data DescriptionsUniversity of Maryland Global   Landcover Data Global Runoff Data Centre (GRDC) USGS & EPA National Hydrography Dataset (NHDViewer): Hydrography   data at 1:1,000,000   scale. Downloaded using EPA sub-basins, USGS Quad indices,   or 108th Congressional   District U.S. Reservoir Sedimentation Survey Database Computing LinksUpdated version of Jenny's Tutorial Additional   computing   notes Common conversions and calculations GNU Make page For use in GMT: RGB Color List ModelsProfessional OrganizationsLast updated 01/14/2008   by Elizabeth Clark |