You have to be very careful. Most jurisdictions do not allow you to drain onto adjacent property. And if the yard is wet all the time, the Government could declare it a wetland, (not joking either).: : My back yard is swampy from water running off a hill to the base of my back yard. what is the best way to drain it off ? would a french drain ran out to the street be the beast way ?? what materials should I use? Pipe gravel, mesh cloth? how deep what type of gravel?HELP new homeowner!!