Maybe. Some math whiz here should be able to calculate the amount needed to fill this thing from the dimensions given.
My guess is we're talking something with an extremely large capacity here.
Maybe. Some math whiz here should be able to calculate the amount needed to fill this thing from the dimensions given.169 cubic miles is 704 cubic kilometers.
In comparison:
Lake Tahoe - 469 ckm
Dead Sea - 810 ckm
I really doubt this thing was ever filled.