The objective of this project is restore habitat for native Hawaiian waterbirds and migratory shorebirds in Hamakua Marsh, Kailua, Oahu and to involve local organizations, businesses, schools and county, state and federal agencies in the process in order to integrate the wildlife sanctuary in to the fabric of the community. David G. Smith, Oahu Wildlife Manager State of Hawaii - Division of Forestry and Wildlife

The wildlife habitat value of the area is constrained by a lack of water. Hamakua Marsh is currently dependent upon rainfall for its water, and the native bird populations fluctuate with water levels. As the area floods with season al rains, the bird populations increase. But as the area dries out, foraging area decreases, active nests are threatened, and birds are forced to go elsewhere.

The project area is located in Honolulu County and covers 22.7 acres. Hamakua Marsh lies downstream from Kawai Nui Marsh, the largest remaining wetland in the State. Kawai Nui stream was the primary drainage for Kawai Nui Marsh and ran past the project site as it mades its way to Kaelepulu Pond and into Kaelepulu Stream which then empties to Kailua Bay. In the early 1960's, the Army Corps of Engineers constructed a flood control levee, which cut off upstream flow from Kawai Nui Marsh to Kawai Nui Stream. Hamakua Marsh then became dependent on rainfall runoff and saltwater backed up from Kailua Bay. The stagnant Kawai Nui Stream has minimal water turnover, and the resulting anaerobic conditions result in poor water quality. A brackish water source is needed to restore water flow in the marsh, increase reliable foraging and nesting habitat for Hawaiian waterbirds, and improve water quality in Kawai Nui Stream.