Q. On question 2069 you mention that Horav Miller permits to shovel a path in the snow during Shabbos when in need. Does that mean that one is allowed to shovel the snow into the grass area of the house, now covered with snow?
A. Regarding pouring water (not during winter) into concrete slabs or a paved ground, when the water may eventually reach grass, Poskim tend to be lenient when there is no need for watering the grass and one does not have that intention. (See Piskei Teshuvos (336: 9-10). One may argue that pouring snow into an already snow covered grass patch during the winter when the ground is likely frozen or soaking wet, does not constitute watering plants or trees. However, Horav Shlomo Miller’s Shlit’a opinion is that preferably the snow should be placed on paved ground or similar if possible.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a