Must the partition walls built for the stream extend across the full width of the breach, or only enough to reduce the opening to 10 tefachim?

When a stream of water (amat hamayim) passes through a yard and is 10 tefachim deep and 4 tefachim wide, may one draw water from it on Shabbat?

6 opinions

When the partition walls at the stream's entry/exit are built from the sides but not fully connected (gap left for water to flow), how large a gap is permissible?

4 opinions

Does a stream passing through a yard render the yard itself forbidden for carrying (even apart from drawing water from the stream)?

3 opinions

When a tongue (lashon) of the sea enters a yard through a breach, and the breach is less than 10 tefachim wide and not the full width of the wall, may one draw water and bring it into the house?

3 opinions

When the breach is more than 10 tefachim wide or spans the full wall width, and remnant walls (gidudim) remain at the breach site that are 10 tefachim tall but covered by water, may one draw water in the yard or bring it into the house?

4 opinions

When the breach is more than 10 tefachim wide or spans the full wall, and no remnant walls (gidudim) remain at all, may one draw water in the yard?

3 opinions

If the entry/exit openings of a stream into the yard are less than 3 tefachim wide, is any partition required?

3 opinions