Which preposition to use with backwaters

of Occurrences 16%

There in a quiet backwater of traffic a small crowd gathers round a shabbily-dressed Panjabi, who, producing a roll of pink papers and waving them before his audience, describes them as the Prayer-treasure of the Heavenly Throne ("Duai Ganjul Arsh"), Allah's greatest gift to the Prophet.

Which preposition to use with  backwaters