The North

By the Coast line, including the Islands adjacent thereto.

The East

By the coast line, including the islands adjacent thereto.

The West

By the coast line, including the islands adjacent thereto.

The South

By the River Hurunui to its source, thence by a right line drawn to the point where the River Kotu-urakaoka issues out of Lake Brunner, thence by the River Kotu-urakaoka to its junction with the River Grey, thence by the River Grey to its mouth.