When the man went out eastward with the line in his hand, he measured 1,000 cubits,a and he led me through the water, water that was to the ankles. Bible
1,000 cubits is about 1/3 of a mile

“the man went out eastward.” Today the Mount of Olives is directly east of the Temple in Jerusalem and so water could not flow directly east from the Temple Mount. Today, water from the Temple Mount would flow down from the Temple Mount into the Kidron Valley then flow to the south and through the Judean Wilderness and eventually flow into the Dead Sea. However, when Christ conquers the earth the Mount of Olives will split, with part moving north and part moving south and opening a valley from the Temple to the east so water will be able to flow in a much more direct path from the Temple Mount into the Dead Sea.

Commentary for: Ezekiel 47:3