'Reservoir' in the Bible

Nevertheless a spring or a cistern (reservoir) collecting water shall be clean; but whoever touches one of these carcasses shall be unclean.

You also made a reservoir between the two wallsFor the waters of the Old Pool,But you did not look to its Maker,Nor did you recognize Him who planned it long ago.

Oh that my head were watersAnd my eyes a fountain of tears,That I might weep day and nightFor the slain of the daughter of my people!

Therefore thus says the Lord,“Behold, I will plead your caseAnd take full vengeance for you;I will dry up her sea and great reservoirAnd make her fountain dry.