Fishponds are strongly associated with streams (kahawai) and muliwai (wetlands, esturies). The Kalepolepo fishpond pictured below has no obvious wetland today, because the Menehune Shores hotel was built on top of the wetland. However, the wetland hydrology remains underneath. Springs still flow underneath the ground and into the ocean here. And sometimes when it rains the original spring can burst out of the ground near the beach and take out a mass of sand. After one particular rain event, it took 50 truck loads of sand to “fill the spring back in”.
The Koʻieʻie Wetland shows us that wetlands hydrology is very persistent and is always active although in nay be hidden for long periods.
In the next diagram you can see the flood footprint and the various Kahawai associated with the Kulanihakoi gulch: