For general information, see the ADCIRC site, ADCIRC FAQ, or the ADCIRC Wikipedia page. For model documentation not yet available on the wiki, see the ADCIRC site. New content is being continuously added to the ADCIRCWiki, and material from the main ADCIRC site will be gradually transitioned over to the wiki.
The fort.13 file contains nodal properties which are constant in time but spatially variable. This file is only read when NWP > 0 in the Model Parameter and Periodic Boundary Condition File (fort.15 file). Information on available nodal attributes can be found on the nodal attribute page.
See fort.13 file format for details.