Carve Gulf

You cause a solid surface within range to shift and break apart, creating a chasm. You can make the chasm up to 5 miles long, 500 feet wide, and 100 feet deep. This spell splits earth and stone, but can’t manipulate artificial construction. Man-made structures in the area of the chasm shift to accommodate the new terrain, moving harmlessly to whichever side of the chasm it is closer to.

When complete, the chasm then fills with your choice of saltwater or freshwater, forming a gulf.