יָשֵׂ֣ם נְהָר֣וֹת לְמִדְבָּ֑ר וּמֹצָ֥אֵי מַ֝֗יִם לְצִמָּאֽוֹן׃
He turneth rivers into a wilderness, And watersprings into a thirsty ground;
Rashi on Psalms
He makes rivers into a desert That is to say that He makes the settlements of the nations into ruins.