The Hawaii state government has a sizable repository of GIS data that could be useful to import into OSM: http://hawaii.gov/dbedt/gis/. I have contacted a manager in the GIS department by telephone and verified that this GIS data is in the public domain, and therefore available for import into OSM.
Hawaii has pretty good road coverage from a import of 2007 TIGER data on O'ahu, and an ongoing import of 2009 TIGER data for the remaining islands, so the roads data provided by the GIS department probably doesn't need to be considered. But there is a lot of other data available that isn't currently in OSM, such as: * Streams, waterfalls, dams, and canals (Does the National Hydrography Dataset cover Hawaii?) * Coral reefs * Offshore islets * Mile markers * Trails * Parks * Schools * Hotels * Assorted administrative boundaries * Land use categorization. * etc. There has been relatively little mapping activity in Hawaii outside of O'ahu, so these data sets are unlikely to conflict with much existing work on the neighbor islands. More careful consideration would have to be given for data imports for O'ahu. I have not made any investigation into the accuracy of any of this data yet, and honestly, I'm not sure what sort of tools or techniques would be useful for evaluating the accuracy. -Scott -- Scott Atwood The hill isn't in the way, it is the way.
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