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The East Maui Watershed consists of approximately 120,000 acres and provides the largest harvestedsource of surface water in the state. This watershed services Upcountry residents and farmers from Haiku to Kanaio.
Waikamoi Preserveis at the heart of the East Maui Watershed and is a central component of one of thelargest intact native rain forests in the State. The Nature Conservancy works to protect the source headwaters that supply the majority of drinking water for Upcountry.
Auwahi Forest Restoration Project is located in the southwest slope of Haleakala. Restoration work is focused on 300 acres at the 3000 to 5000-foot elevation including the surrounding 184-acre watershed forest restoration ecological buffer zone that extends into upland watershed areas. AFRP offers a powerful, unique, and influential platform for the Maui community to engage in the protection and restoration of Hawaiian watersheds.
Mauna Kahalawai Watershed Partnership fka West Maui Mountains Watershed Partnership, covers 19,023 acres of the 31,324 actively managed acres as well as the 2,001-acre of DWS land on the northThese side of Waihe’e River and 3,301-acre DWS easement across the Wailuku Water Company’s land. watersheds are drinking water source for Central, South and West Maui.
The 8,600-acre Pu’u Kukui Watershed Preserve is located on the north-west side of Mauna Kahalawai(West Maui Mountain). This critical watershed is a primary recharge area for groundwater and surface water sources in West and Central Maui.
The Honokowai and Wahikuli watersheds are located within Kapunakea Preserve. It is a 1,264-acre preserve held under a perpetual conservation easement granted to The Nature Conservancy. The preserve’s upper elevations are recognized as among the highest quality native areas in the State.
The East Molokai Watershed Partnership’s (EMoWP) South Slope and Pakui Unit encompass 15,600 acres. EMoWP uses a variety of monitoring systems to measure progress and to assess the success of its forest management actions.
The Maui Invasive Species Committee and the Molokai Maui Invasive Species Committee (MISC and MoMISC) work island-wide at a landscape level to target the most serious threats to watershed integrity. Maintaining intact native vegetation in Maui’s forested watersheds is essential to ensure a sustainable supply of fresh water in perpetuity.
The Hawai’i Agriculture Research Center is in the process of developing wilt resistant Acacia Koa for watershed restoration. The primary cause of koa mortality is the fungus Fusarium oxysporum. The result of this project will provide landowners/managers an incentive to modify their land use practices in a way that will directly enhance water recharge through decreased runoff, increased infiltration and increased cloud/mist capture.
The Hawai’i Agriculture Research Center’s Ohia Project aims to develop disease resistant Ohia for watershed protection. Ohia is now seriously threatened by a disease commonly referred to as Rapid Ohia Death (ROD). The introduction of disease resistant ohia will directly benefit the long-term sustainability of Maui County’s water supply.
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