Waipuilani Gulch Slideshow The headwaters of the Waipuilani Stream start high on the slopes of Haleakala, and begin to flow downhill through the Waiohuli gulchWaiohuli gulch feeds water into Waipuilani gulch where it flows from mauka towards the flood-plainWaipuilani Gulch Catchment AreaWaipuilani Gulch flooding near Piilani Hwy bridge 3-13-2021 Photo by Rob WeltmanSoil erosion pollutes stormwater runoff.Soil erosion pollutes stormwater runoff.Water flow through lower Waipuilani GulchDiagram of the proposed subdivision in Waipuilani GulchWaipuilani stream can sometimes overtop this 6-fooot high barrier wallWaipuilani stream culvert at South Kihei RoadWaipuilani stream flows under South Kihei RoadStream flows alongside Luana Kai condos in KiheiTrash and chemicals stored next to wetland streamWaipuilani wetland receiving stormwaterThis is a natural part of the wetland cycle, wetlands can expand and contract in response to changing conditions.Expanding wetlands at Waipuilani ParkCondo workers breaking open the sandplug that was protecting the oceanStormwater from Waipuilani Gulch entering the oceanStormwater runoff from Waipuilani Gulch enters the ocean.