The Yolo Bypass Wildlife Area is located within the Yolo Bypass in Yolo County, California. The wildlife area is managed by the California Department of Fish and Wildlife with the intent of restoring and managing a variety of wildlife habitats in the Yolo Basin, a natural basin in the north part of the Sacramento-San Joaquin River Delta. The creation of the wildlife area was spearheaded by the Yolo Basin Foundation. The California Department of Fish and Wildlife and Yolo Basin Foundation are the core partners in the operation of this unique community resource. Located at 38°33′02″N 121°37′35″W / 38.550515°N 121.626291°W
The wildlife area was open to the public in 1997 after extensive restoration efforts completed by Ducks Unlimited with federal funds appropriated through the United States Army Corps of Engineers. In 1999, this 3,700-acre (15 km2) restoration project was named the Vic Fazio Yolo Wildlife Area in honor of congressman Vic Fazio who lobbied hard for the funds needed to build the project. In 2001 the wildlife area expanded to over 16,000 acres (65 km2) with the acquisition of the Glide and Los Rios properties. These acquisitions included the 10,000-acre (40 km2) Tule Ranch, a working cattle ranch with extensive vernal pool areas.
Most wetland on the wildlife area are managed as seasonal wetlands. They go through an extensive dry period during the spring and summer months. Typically these ponds are drained April 1 to stimulate the germination of Swamp Timothy. They may receive a brief summer irrigation and then are flooded in September to provide wetland habitat for migratory waterfowl and shorebirds.