Tinman and his brother, Billy Joe Jack, live in southern California in an area that has a history of constantly being underwater from flooding. Their house has a basement, which means that it isn't really safe from flooding. If they need to displace 10 gallons of water a minute to keep the basement dry, and on average, according to past events, there would be water every day, how much water would they have to displace in a 30 day month?