The purpose of the Delta Meadows property, in Sacramento County, is to preserve and protect one of the last remaining areas of the northern Sacramento-San Joaquin River Delta that exhibits remnants of the natural conditions that existed prior to Euro-American settlement. The property's waterways, located on the Pacific flyway and influenced by Pacific Ocean tides through the lower Sacramento River, contain permanent and seasonal water areas, as well as adjacent uplands that support a variety of riparian plant and animal life, including the river otter, the delta smelt and the Sacramento chub. The property contains Native American occupancy sites, as well as remnants of such early farming and ranching activities as slough dredging and levee building.