HO'OWAIWAI Watershed
Maui, Hawaii

Maliko Gulch: 20.92912, -156.33634; Launiupoko: 20.84498, -156.65068

Protecting coastal watersheds through riparian restoration and regenerative agriculture

The Island of Maui is rich in plant and animal biodiversity and historically has served as a model ecosystem for living sustainably in harmony with the land. In recent decades, however, parts of Maui have faced neglect and are in need of restoration. 

In the HO’OWAIWAI Watershed Project (pronounced as "ho-oh-vye-vye"), SeaTrees and Regenerative Education Centers will restore and regenerate critical coastal watershed systems, known in the Hawaiian language as an Ahupua'a (pronounced ahoo-poo-ah-ah). We will focus on two Mokus (or districts) within these Ahupua’a, Maliko Gulch and Launiupoko.  

Regenerative Education Centers restores and maintains the land by direct restoration of the stream bed and regenerative agricultural practices, which then serves the community as a source of regenerative organic produce, erosion prevention, and protection for the neighboring reefs.

A Fragile Ecosystem

Degraded after years of neglect

Regenerative Education Centers now stewards the land in Maliko Gulch and Launiupoko, setting an example for what sustainable watershed restoration looks like. The restoration efforts will focus specifically on removing trash and invasive species (plant and animal), and growing native and voyaging plant species (a mix of trees, shrubs, and grasses) in critical areas within the watershed. This will in turn reduce soil erosion and sedimentation into the streams, resulting in direct improvements and protection of the reef systems that are located at the end of the watershed.

Reintroducing native species

After removing invasive species from the restoration sites, REC replants the area with native and voyaging plants. A few of these native and voyaging species used in this restoration site include:

- Trees: ‘Ulu (Breadfruit), Niu (Coconut), Pu hala (Pandanus), Kou, Milo, Loulu Palm, Hawaiian Kamani, 

- Shrubs: Naupaka (Heliotropes) and Pohinahina (Vitex)

- Grasses: Pili, and Vetiver


SeaTrees has partnered with Regenerative Education Centers (“REC”), a nonprofit organization founded in 2018 in Hawaii and California focused on regenerative lifestyles and solutions. REC has decades of experience rehabilitating natural ecosystems in Hawaii. 

Learn More about REC

Definition of


The Hawaiian word for fresh water is "Wai". Water holds so much value in Hawaiian culture, that the word HO'OWAIWAI means “the wealth, enrichment and prosperity that is water”.

SeaTrees has named its efforts in honor of "HO'OWAIWAI", because we hope to restore the real wealth of the land (ʻĀina) back to the local communities.

Thank you to the Kimokeo Foundation for their guidance on Hawaiian etymology.

Photo: Daniel Sinoca