וַיֹּ֕אמֶר כֹּ֖ה אָמַ֣ר יְהוָ֑ה עָשֹׂ֛ה הַנַּ֥חַל הַזֶּ֖ה גֵּבִ֥ים ׀ גֵּבִֽים׃
And he said: ‘Thus saith the LORD: Make this valley full of trenches.
Rashi
and its pools [Heb. וּגְבָאָיו,] like (II Kings 3:16): “This valley will be full of pools.” The בִּצִים are the marshes around it, and the גֵבִים are ditches in which water is gathered.