Deer Flat National Wildlife Refuge, established in 1909, is one of the nation’s oldest refuges. Located southwest of Boise, Idaho, the refuge has two sectors, Lake Lowell and the Snake River Islands. The Lake Lowell sector encompasses 10,588 acres, including the almost 9,000-acre Lake Lowell and surrounding lands. The Snake River Islands sector contains about 800 acres on 101 islands. These islands are distributed along 113 river miles from the Canyon-Ada County Line in Idaho to Farewell Bend in Oregon. Several islands house heron rookeries and gull colonies, and provide feeding and resting spots for migratory birds.