In 4E, Ebe is the nation and Ur Draxa was the capital city of Ebe.
On the Timeline of Athas has this entry:
The great cities of Ebe, Waverly, and Arala were swallowed by the expanding Silt Sea, though later it receded from Waverly. The nearby city of Bodach was spared, but became surrounded by silt.
The “nearby city of Bodach” probably means nearby Waverly, but it could also mean that Ebe is near those 2 ruins as well.