As you may already know, Prague is currently bracing itself for its heaviest flooding in recent memory. In preparation, the city has shut down large portions of its subterranean Metro system and has added temporary tram and bus services to compensate. This map, obviously produced in a hurry, outlines those service changes with a minimum of fuss. It also shows which tram lines have been cancelled until further notice. With events like this, informing the public of service changes as quickly and effectively as possible is paramount, as recent events like Hurricane Sandy show. 

Source: Official DPP website – link no longer active