Simplify the following text for a Grade 8 native English-speaking person.
Original: Due to the high water table in the new location , the cathedral was built on only four feet of foundations , and by 1258 the nave , transepts and choir were complete .
Simplified: Due to the high water level in the new location , the cathedral was built on only four feet of foundation . By 1258 the nave , transepts and quire ( choir ) were complete .