Delevan NWR is part of the Sacramento NWR Complex and is located in the Sacramento Valley of north-central California. The refuge consists of nearly 5,800 acres comprised of seasonal marsh, permanent ponds, watergrass, and uplands in Colusa County. Waterfowl are present from September through March, and hundreds of thousands of ducks and geese from November through January. Numerous birds and mammals are present year round. Recreation - Recreation activities include wildlife observation, study, and photography from perimeter roads. Hunting of ducks, geese, coots, snipe, and pheasants is permitted October through January.
