- Camas NWR is 36 miles north of Idaho Falls in southeast Idaho, in the Camas Creek floodplain. Elevation is 4,800 feet. About half of its acreage consists of lakes, ponds, and marshlands; the remainder is grass-sagebrush uplands, meadows, and farm fields. Camas Creek flows for 8 miles through the length of the refuge and is the source of water for many of the lakes and ponds. Tall cottonwood trees along the creek attract a wide variety of songbirds. An extensive system of canals, dikes, wells, ponds, and water control structures is used to manipulate water for the benefit of wildlife.
The refuge is managed to benefit nesting waterfowl; duck species produced in the greatest numbers are redheads, mallards, shovelers, lesser scaup, and blue-winged and cinnamon teal. The refuge also provides resting and feeding habitat for spring and fall migrating ducks, geese, and other waterfowl. During migration, which peaks March-April and October, up to 25,000 ducks and 3,000 geese may be present on the refuge, especially mallards, pintails, gadwalls, wigeon, and Canada geese. Tundra and trumpeter swans peak in the hundreds during migration also, and 2 pairs of trumpeters nest on the refuge. Bald eagles are present in winter, peregrine falcons may occasionally be observed in summer, and the trumpeter swan has begun nesting on the refuge in recent years.