Qualla: He'eia Fishpond

He'eia Fishpond: Introduction

Thu, 12 Mar 2026 00:00:00 GMT

Somewhere between the early 1200s and the early 1400s, Hawaiian engineers built a wall across 88 acres of Kaneohe Bay. They used no mortar. The dry-stacked stones, fitted by hand in a technique called Uhau Humu Pohaku, formed a barrier that mixed fresh water flowing from the shore with salt water entering from the bay, creating a brackish environment ideal for raising fish. He'eia Fishpond is the only Hawaiian fishpond fully encircled by a stone wall, a kuapa-style structure that represents one of the most sophisticated aquaculture systems developed anywhere in the pre-industrial world. It was added to the National Register of Historic Places in 1973 and has been the subject of an ongoing restoration effort since 1988.

Read more: He'eia Fishpond on Qualla

He'eia Fishpond: Engineering Without Mortar

Thu, 12 Mar 2026 00:00:00 GMT

The fishpond's wall encloses an area of 88 acres in the southern reaches of Kaneohe Bay on Oahu's windward coast. About a quarter of its perimeter is bounded by the bluffs of the shoreline, where private homes now sit. The rest is open wall rising from the bay floor, constructed ...

Read more: He'eia Fishpond on Qualla

He'eia Fishpond: The Flood and the Mangroves

Thu, 12 Mar 2026 00:00:00 GMT

In 1965, a flood destroyed over 200 feet of the fishpond's wall. The damage was severe, but what followed was worse: decades of neglect during which invasive mangroves colonized the broken sections. Mangrove roots are powerful enough to pry apart stonework from the inside, and th...

Read more: He'eia Fishpond on Qualla

He'eia Fishpond: Paepae o He'eia and the Long Restoration

Thu, 12 Mar 2026 00:00:00 GMT

In 2003, the nonprofit organization Paepae o He'eia became the fishpond's official steward. The restoration work is deliberate and labor-intensive, guided by the same principles that built the pond centuries ago. Volunteers and staff rebuild the wall by hand, fitting stones witho...

Read more: He'eia Fishpond on Qualla

He'eia Fishpond: What the Pond Teaches

Thu, 12 Mar 2026 00:00:00 GMT

He'eia Fishpond is more than an archaeological artifact. It is a working demonstration of sustainable aquaculture, a system that fed communities for centuries without depleting the bay's resources. The kuapa wall creates a controlled environment where brackish water, a mixture of...

Read more: He'eia Fishpond on Qualla