Integrated water resources planning was conducted for Olowalu Town, a proposed development in western Maui, Hawaii. Total water needs, which can be supplied by a combination of diverted surface water, well water, recycled water and captured stormwater, are estimated at between 1 and 2 mgd. The Olowalu development will generate approximately 0.5 million gallons per day (mgd) of municipal wastewater. That wastewater can be recycled for beneficial use and irrigate between 80 and 120 acres depending on the amount of storage provided and the type of water reuse.