Professional Societies Useful Data Repositories Useful Open-Source Software Professional Societies American Physical Society American Geophysical Union American Society of Civil Engineers American Shore and Beach Preservation Association Coasts, Oceans, Ports, Rivers Institute North American Lake Management Society American Society of Limnology and Oceanography Useful Data Repositories National Climatic Data Center National Buoy Data Center Data Center for Digital Bathymetry Shoreline / Coastline Data USGS Streamflow Data Useful Open-Source Software ADCIRC - Finite-element shallow-water hydrodynamic model. FVCOM - Finite-volume coastal ocean model. BATTRI - Matlab-based two-dimensional grid generator. OPNML - Useful Matlab routines from the UNC Ocean Processes Numerical Modeling Laboratory. REFDIF - Refraction / diffraction model for water wave propagation. PIVSleuth - PIV interrogation software. CleanVec - PIV validation software.  MATPIV - Matlab toolbox for PIV. Miktex - Windows implementation of LaTeX. Ghostview - Useful for viewing / converting postscript files.