Hello...new to this site, hope sombody has an idea to help. I live in NE Ohio, and 6 years ago, the city put in water pipes and completely changed the slope and drainage of my front lawn. If you put a rope from the edge of the road to the front of my porch (approx 80 ft) and pulled taught, there would be a 1 foot "sag" in the lawn, and to make it worse, I have two 30 ft mature black maples right in the middle. I have tried adding dirt/top soil ( about 50 yrds topsoil and 2 dumps of dirt)) but if I add more, the trees would be affected. Now the real problem, I live across from city hall, and all winter extra salt is dumped right in front of my house, it melts and I get a river a street salt all spring and very nice brown riverbeds. Adding dirt every spring and re-seeding gets expensive and redundant...any ideas???