ditch

a long narrow excavation in the earth

any small natural waterway

A trench made in the earth by digging, particularly a trench for draining wet land, for guarding or fencing inclosures, or for preventing an approach to a town or fortress. In the latter sense, it is called also a moat or a fosse.

forsake

throw away

sever all ties with, usually unceremoniously or irresponsibly

make an emergency landing on water

crash or crash-land

cut a trench in, as for drainage

To dig a ditch or ditches in; to drain by a ditch or ditches; as, to ditch moist land.

To dig a ditch or ditches.