Roughly 5 miles southeast of La Grande, in central Union County. Ladd Marsh is a group of wetlands, grasslands, shrub and conifer habitats totaling over 6,000 acres in the southwest Grande Ronde Valley.
This 6,020 acre wildlife area is one of the largest remaining wetlands in NE Oregon, and includes a variety of wetland types (open water, emergent wetland, scrub shrub, and wet meadow) as well as prairie grassland, upland shrub, and conifer habitats. Because this area is intended to protect nesting and migrating waterfowl, public access is limited, but several county roads offer good viewing, especially with a spotting scope.
Ladd Marsh is one of the largest remaining wetlands in northeast Oregon. During spring migration 15,000 to 20,000 ducks and geese are typically present including hundreds of Greater White-fronted Geese and small numbers of Snow Geese and Ross's Geese. During June and July, Black-necked Stilts and American Avocets nest on the area, making it one of the only sites in northeast Oregon where these shorebirds nest. The area also hosts nesting Black-crowned Night-Herons, Sandhill Cranes and long-billed Curlews.