BT Git 73a(21) :לסוף אפיקו בה נהרא‏ : they finally diverted a canal into it
See the entire entry for nhar, nahrā n.m. river

BT Git 73a(21) :לסוף אפיקו בה נהרא‏ : some time later they diverted a canal through it [i.e. the field]
See the entire entry for npq vb. to go out