It was originally thought the demise of Egyptian authority abroad during the Twentieth Dynasty of Egypt made the city less significant, leading to its abandonment as a royal residence. It is now known that the Pelusiac branch of the Nile began silting up c. 1060 BCE, leaving the city without water when the river eventually established a new course to the west now called the Tanitic branch. [http://www.tingroom.com/lesson/flcs/67971.html] The Twenty-first Dynasty of Egypt moved the city to the new branch, establishing Djanet (Tanis) on its banks, to the north-west of Pi-Ramesses, as the new capital of Lower Egypt. The pharaohs of the Twenty-first Dynasty transported all the old Ramesside temples, obelisks, stelae, statues and sphinxes from Pi-Ramesses to the new site. The obelisks and statues, the largest weighing over 200 tons, were transported in one piece while major buildings were dismantled into sections and reassembled at Tanis. Stone from the less important buildings was reused and recycled for the creation of new temples and buildings.