הָאֹמֵ֥ר לַצּוּלָ֖ה חֳרָ֑בִי וְנַהֲרֹתַ֖יִךְ אוֹבִֽישׁ׃
װאָס זאָגט צו דער טיפֿעניש: װער טרוקן, און דײַנע טײַכן װעל איך אױסטריקענען;
Ibn Ezra
מצולה═צולה (Jon. 2:4) The deep. A figurative expression, signifying Babylon, that was full of men and wealth like the deep of the sea.46Which is full of water.
Rashi
and I will dry up your rivers Since it is situated on rivers, he compares the slaying of its population to the drying up of rivers.