Grassland Ecological Area

The Grassland Ecological Area, also known as the Grasslands Ecological Area is a designated Ramsar Site (wetland of international importance) in Central California. It covers an area of 650 km2 along the San Joaquin River in California's Central Valley. The wetlands are on the Pacific Flyway, and are an important habitat for resident and migratory waterbirds.

It consists of several federal and state protected areas. The federal protected areas are managed together as the San Luis National Wildlife Refuge Complex.
 * National wildlife refuges, managed by the United States Fish and Wildlife Service (USFWS):
 * San Luis National Wildlife Refuge
 * Merced National Wildlife Refuge
 * San Joaquin River National Wildlife Refuge


 * Federal wildlife management areas, managed by private owners with conservation easements by the USFWS:
 * Grasslands Wildlife Management Area


 * State wildlife areas, managed by the California Department of Fish and Wildlife:
 * North Grasslands Wildlife Area (Salt Slough, China Island, Gadwall)
 * Volta Wildlife Area
 * Los Banos Wildlife Area (Los Banos, Mud Slough)


 * California State Parks, managed by the California Department of Parks and Recreation:
 * Great Valley Grasslands State Park