Kīkīaola is a historic irrigation ditch (ʻauwai) located near Waimea on the island of Kauai in the U.S. state of Hawaii.

[2] Hawaiians built many stone-lined ʻauwai to irrigate ponds for growing taro (kalo), but very rarely employed dressed stone to line ditches.

The 120 finely cut basalt blocks that line about 200 feet of the outer wall of the Menehune Ditch make it not just exceptional, but "the acme of stone-faced ditches" in the words of archaeologist Wendell C.

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