OMG!! that really sucks! where i live here in ny is north of nyc in the suburbs and its also watershed area. our reservoirs feed nyc and the five boroughs. in the winter all they do is throw down gravel, and lots of it. i love the sound of my car being sandblasted every winter. i also added glass insurance to my policy for just that reason. its nice to know that if a rock flies up and breaks my windshield, the glass people come to me and repair it. cracks, chips, totally broken, whatever. its worth the extra $200.00 per year.