Limit by Geographic Location
Washington (State) (61)
Pacific Ocean (50)
Central Valley (Valley) (Calif.) (48)
Atlantic Coast (U.S.) (39)
New York (State) (27)
West (U.S.) (24)
Pacific Coast (U.S.) (21)
Columbia River (18)
Middle West (18)
Atlantic Ocean (15)
Bering Sea (15)
North Pacific Ocean (15)
Southern States (15)
Bear River Migratory Bird Refuge (Utah) (14)
Great Lakes (North America) (13)
Mexico, Gulf of (13)
Missisquoi National Wildlife Refuge (Vt.) (13)
Central Pacific Basin (12)
Chincoteague National Wildlife Refuge (Va. and Md.) (12)
Galveston Bay (Tex.) (12)
Georges Bank (12)
Oahe, Lake (S.D. and N.D.) (12)
Northwest, Pacific (11)
Erie National Wildlife Refuge (Pa.) (10)
Northeastern States (10)
Quivira National Wildlife Refuge (Kan.) (10)
Bowdoin National Wildlife Refuge (Mont.) (9)
Mississippi River (9)
Ouray National Wildlife Refuge (Utah) (9)
Audubon National Wildlife Refuge (N.D.) (8)
Erie, Lake (8)
Laurel (Md.) (8)
Maine, Gulf of (8)
Malheur National Wildlife Refuge (Or.) (8)
San Francisco Bay (Calif.) (8)
Tennessee River Watershed (8)
Trinity River (Calif.) (8)
Arapaho National Wildlife Refuge (Colo.) (7)
Chesapeake Bay (Md. and Va.) (7)
Crescent Lake National Wildlife Refuge (Neb.) (7)
Delta Region (Calif.) (7)
Eastern Neck National Wildlife Refuge (Md.) (7)
Long Island (N.Y.) (7)
Michigan, Lake (7)
Arrowwood National Wildlife Refuge (N.D.) (6)
Blackwater National Wildlife Refuge (Md.) (6)
Bombay Hook National Wildlife Refuge (Del.) (6)
Chincoteague National Wildlife Refuge (Va.) (6)
Colorado River Watershed (Colo.-Mexico) (6)
Great Lakes Region (North America) (6)
Great Swamp National Wildlife Refuge (N.J.) (6)
Kauai (Hawaii) (6)
Lee Metcalf National Wildlife Refuge (Mont.) (6)
Rachel Carson National Wildlife Refuge (Maine) (6)
Rachel Carson National Wildlife Refuge (Me.) (6)
Seedskadee National Wildlife Refuge (Wyo.) (6)
Turnbull National Wildlife Refuge (Wash.) (6)
Upper Souris National Wildlife Refuge (N.D.) (6)
Yellowstone Lake (Wyo.) (6)
Yellowstone National Park (6)
Alamosa National Wildlife Refuge (Colo.) (5)
Atlantic Coast (United States) (5)
Benton Lake National Wildlife Refuge (Mont.) (5)
California, Southern (5)
Colorado River (Colo.-Mexico) (5)
Flint Hills National Wildlife Refuge (Kan.) (5)
Gulf Coast (U.S.) (5)
Klamath River (Or. and Calif.) (5)
Lake Ilo National Wildlife Refuge (N.D.) (5)
Lostwood National Wildlife Refuge (N.D.) (5)
Mississippi River Delta (La.) (5)
Monte Vista National Wildlife Refuge (Colo.) (5)
Pacific Coast (Calif.) (5)
Prairie Pothole Region (5)
Red Rock Lakes National Wildlife Refuge (Mont.) (5)
Sacramento River (Calif.) (5)
Saint Marys River (Mich. and Ont.) (5)
Appalachian Region (4)
Arctic National Wildlife Refuge (Alaska) (4)
Bristol Bay (Alaska) (4)
Charles M. Russell National Wildlife Refuge (Mont.) (4)
Iroquois National Wildlife Refuge (N.Y.) (4)
Lost Trail National Wildlife Refuge (Mont.) (4)
Middle Atlantic States (4)
Minnesota Valley National Wildlife Refuge (Minn.) (4)
Missouri River Watershed (4)
Montezuma National Wildlife Refuge (N.Y.) (4)
North Platte National Wildlife Refuge (Neb.) (4)
Pacific Coast (Mexico) (4)
Parker River National Wildlife Refuge (Mass.) (4)
Pribilof Islands (Alaska) (4)
Sacramento Valley (Calif.) (4)
Selawik National Wildlife Refuge (Alaska) (4)
Tewaukon National Wildlife Refuge (N.D.) (4)
Willamette River (Or.) (4)
Willapa National Wildlife Refuge (Wash.) (4)
Alaska Maritime National Wildlife Refuge (Alaska) (3)
Back Bay National Wildlife Refuge (Va.) (3)
Bandon Marsh National Wildlife Refuge (Or.) (3)
Bonneville Dam (Or. and Wash.) (3)
Browns Park National Wildlife Refuge (Colo.) (3)
Cambridge Region (Md.) (3)
Cape May National Wildlife Refuge (N.J.) (3)
Caribbean Area (3)
Chukchi Sea (3)
Churchill County (Nev.) (3)
Coachella Valley (Calif.) (3)
Dungeness National Wildlife Refuge (Wash.) (3)
Eastern Shore of Virginia National Wildlife Refuge (Va.) (3)
Edwin B. Forsythe National Wildlife Refuge (N.J.) (3)
Hawaii Island (Hawaii) (3)
Horicon National Wildlife Refuge (Wis.) (3)
Humboldt Bay (Calif.) (3)
Innoko National Wildlife Refuge (Alaska) (3)
Lacreek National Wildlife Refuge (S.D.) (3)
Lake Michigan (3)
Lewis and Clark Lake (Neb. and S.D.) (3)
Marquesas Islands (French Polynesia) (3)
McKay Creek National Wildlife Refuge (Or.) (3)
Mississippi River Watershed (3)
Molokai (Hawaii) (3)
Monomoy Wilderness (Mass.) (3)
National Elk Refuge (Wyo.) (3)
Nowitna National Wildlife Refuge (Alaska) (3)
Ohio River Islands National Wildlife Refuge (3)
Pacific Coast (North America) (3)
Prime Hook National Wildlife Refuge (Del.) (3)
Prince William Sound (Alaska) (3)
Rocky Mountain Arsenal National Wildlife Refuge (Colo.) (3)
Ruby Lake National Wildlife Refuge (Nev.) (3)
San Diego County (Calif.) (3)
San Joaquin River (Calif.) (3)
San Joaquin Valley (Calif.) (3)
San Luis National Wildlife Refuge (Calif.) (3)
Sand Lake National Wildlife Refuge (S.D.) (3)
Santa Barbara County (Calif.) (3)
Sashin Creek (Alaska) (3)
Southwestern States (3)
Superior, Lake (3)
Tijuana River Estuary (Calif.) (3)
Tijuana Slough National Wildlife Refuge (Calif.) (3)
Valentine National Wildlife Refuge (Neb.) (3)
Willapa National Wildlife Refuge (Washington (State)) (3)
©ØEtats-Unis (3)
Alaska Peninsula (Alaska) (2)
Alaska Peninsula National Wildlife Refuge (Alaska) (2)
Alturas (Calif.) (2)
Arctic regions (2)
Ash Meadows National Wildlife Refuge (Nev.) (2)
Atlantic Coast (Mass.) (2)
Baja California (Mexico : Peninsula) (2)
Big Boggy National Wildlife Refuge (Tex.) (2)
Blue Ridge Mountains (2)
Buena Vista Marsh (Wis.) (2)
Canaan Valley National Wildlife Refuge (W. Va.) (2)
Central Pacific Basin Region (2)
Central Valley (Calif.) (2)
Chase Lake National Wildlife Refuge (N.D.) (2)
Columbia River Watershed (2)
Contra Costa County (Calif.) (2)
Cook Inlet (Alaska) (2)
Coos County (Or.) (2)
Des Lacs National Wildlife Refuge (N.D.) (2)
Desert National Wildlife Range (Nev.) (2)
Don Edwards San Francisco Bay National Wildlife Refuge (Calif.) (2)
Elwha River (Wash.) (2)
Elwha River (Washington (State)) (2)
Fish Springs National Wildlife Refuge (Utah) (2)
Fort Niobrara National Wildlife Refuge (Neb.) (2)
Great Dismal Swamp National Wildlife Refuge (Va. and N.C.) (2)
Great Meadows National Wildlife Refuge (Mass.) (2)
Great Smoky Mountains National Park (N.C. and Tenn.) (2)
Green River (Wyo.-Utah) (2)
Gulf Coast (Fla.) (2)
Gulf Coast (Tex.) (2)
Gulf States (2)
Hart Mountain National Antelope Refuge (Or.) (2)
Hellcat Interpretive Trail (Mass.) (2)
Humboldt Bay National Wildlife Refuge (Calif.) (2)
Humboldt County (Calif.) (2)
Izembek National Wildlife Refuge (Alaska) (2)
J. Clark Salyer National Wildlife Refuge (N.D.) (2)
John Heinz National Wildlife Refuge at Tinicum (Pa.) (2)
Kenai National Wildlife Refuge (Alaska) (2)
Kirwin National Wildlife Refuge (Kan.) (2)
Klamath Basin (Or.) (2)
Klamath River Watershed (Or. and Calif.) (2)
Kootenai National Wildlife Refuge (Idaho) (2)
Koyukuk National Wildlife Refuge (Alaska) (2)
Lake Zahl National Wildlife Refuge (N.D.) (2)
Lewis and Clark National Wildlife Refuge (Wash.) (2)
Little Pend Oreille National Wildlife Refuge (Wash.) (2)
Lower Klamath National Wildlife Refuge (Calif. and Or.) (2)
Lower Rio Grande Valley National Wildlife Refuge (Tex.) (2)
Marais des Cygnes National Wildlife Refuge (Kan.) (2)
Maui (Hawaii) (2)
Medicine Lake National Wildlife Refuge (Mont.) (2)
Midway Islands (2)
Monomoy National Wildlife Refuge (Mass.) (2)
Moosehorn National Wildlife Refuge (Me.) (2)
Narragansett Bay (R.I.) (2)
Nisqually National Wildlife Refuge (Wash.) (2)
Nisqually National Wildlife Refuge (Washington (State)) (2)
North Slope (Alaska) (2)
Occoquan Bay (Va.) (2)
Olympic National Park (Wash.) (2)
Oxbow National Wildlife Refuge (Mass.) (2)
Pacific States (2)
Pahranagat National Wildlife Refuge (Nev.) (2)
Passamaquoddy Bay (N.B. and Me.) (2)
Passamaquoddy region (2)
Petit Manan National Wildlife Refuge (Me.) (2)
Rainwater Basin Wetland Management District (Neb.) (2)
Rio Grande Valley (2)
Rocky Beach Trail (N.Y.) (2)
Rocky Mountains Region (2)
Sacramento River Watershed (Calif.) (2)
Saginaw Bay (Mich.) (2)
Salton Sea Region (Calif.) (2)
San Diego National Wildlife Refuge (Calif.) (2)
San Francisco Bay Area (Calif.) (2)
San Francisco Bay National Wildlife Refuge (Calif.) (2)
San Luis Obispo County (Calif.) (2)
Santa Cruz Mountains (Calif.) (2)
Shasta River Watershed (Calif.) (2)
Silvio Conte National Fish and Wildlife Refuge (2)
Snake River (Wyo.-Wash.) (2)
South Atlantic States (2)
Southwest, New (2)
Stone Lakes National Wildlife Refuge (Calif.) (2)
Stutsman County (N.D.) (2)
Target Rock National Wildlife Refuge (N.Y.) (2)
Tehuantepec, Gulf of (Mexico) (2)
Tetlin National Wildlife Refuge (Alaska) (2)
Tijuana River National Estuarine Research Reserve (Calif.) (2)
Tongass National Forest (Alaska) (2)
Tule Lake National Wildlife Refuge (Calif.) (2)
Turnbull National Wildlife Refuge (Washington (State)) (2)
Two Ponds National Wildlife Refuge (Colo.) (2)
Umatilla National Wildlife Refuge (Or. and Wash.) (2)
Upper Mississippi River National Wildlife and Fish Refuge (2)
Ventura County (Calif.) (2)
Wallkill River National Wildlife Refuge (N.J.) (2)
Warblers' Loop Trail (N.Y.) (2)
Washington, Lake (Washington (State)) (2)
Wenatchee River (Washington (State)) (2)
Wertheim National Wildlife Refuge (N.Y.) (2)
West Indies (2)
Willamette River Watershed (Or.) (2)
Yampa River (Colo.) (2)
Yukon Delta National Wildlife Refuge (Alaska) (2)
Abrams Creek (Tenn.) (1)
Abstracts (1)
Adirondack Mountains Region (N.Y.) (1)
Aleutian Islands (Alaska) (1)
Alexander Archipelago (Alaska) (1)
Alligator River National Wildlife Refuge (N.C.) (1)
American Falls (Idaho) (1)
American River Watershed (Calif.) (1)
Animas Mountains (N.M.) (1)
Antioch Dunes (Calif.) (1)
Antioch Dunes National Wildlife Refuge (Calif.) (1)
Apalachicola River Watershed (Fla.) (1)
Aransas National Wildlife Refuge (Tex.) (1)
Arctic National Wildlife Range (Alaska) (1)
Argus Range (Inyo County, Calif.) (1)
Arkansas River Watershed (1)
Arvada (Colo.) (1)
Ash Meadows, Nye County, Nevada (1)
Assabet River (Mass.) (1)
Atlantic Coast (R.I.) (1)
Atlantic Coast (South Atlantic States) (1)
Atlantic States (1)
Atlantic coast (U.S.) (1)
Baja California (Mexico) (1)
Beadle County (S.D.) (1)
Bear Lake National Wildlife Refuge (Idaho) (1)
Beaver Creek Watershed (Ky.) (1)
Beaverhead County (Mont.) (1)
Beaverhead National Forest (Mont.) (1)
Becharof National Wildlife Refuge (Alaska) (1)
Bennett County (S.D.) (1)
Benton Lake Wetland Management District (Mont.) (1)
Big Cypress National Preserve (Fla.) (1)
Big Muddy National Fish and Wildlife Refuge (Mo.) (1)
Bonners Ferry (Idaho) (1)
Box Elder County (Utah) (1)
Brewster County (Tex.) (1)
Bristol Bay Region (Alaska) (1)
Broome County (N.Y.) (1)
Buldir Island (Alaska) (1)
Bull Shoals Lake (Ark. and Mo.) (1)
Cache River Watershed (Ark.) (1)
Cache Valley (Utah) (1)
California (United States) (1)
California Channel Islands (Calif.) (1)
California Desert National Conservation Area (Calif.) (1)
California, Gulf of (Mexico) (1)
California, Northern (1)
Caloosahatchee River Watershed (Fla.) (1)
Cambridge (Md.) (1)
Canaan Valley National Wildlife Refuge (proposed) (1)
Cape Meares National Wildlife Refuge (Or.) (1)
Cape San Lucas, Lower California (1)
Carolina Bays (1)
Caroline Atoll (1)
Caroline Islands (1)
Carp River, Mich (1)
Carpinteria Marsh (1)
Cascade Range (1)
Cedar Island National Wildlife Refuge (N.C.) (1)
Cedar Keys National Wildlife Refuge (Fla.) (1)
Cedar River (Washington (State)) (1)
Central Idaho Wilderness (Idaho) (1)
Charles M. Russell Wildlife Refuge (Mont.) (1)
Charlotte County (Va.) (1)
Chase Lake Wetland Management District (N.D.) (1)
Chattahoochee River Watershed (1)
Chehalis River Watershed (Wash.) (1)
Chelan County (Washington (State)) (1)
Chesapeake Bay (1)
Chilkat River Valley (Alaska) (1)
Chincoteague National Wildlife Refuge (Va. and Md.) (Va.) (1)
Choptank River (Del. and Md.) (1)
Choptank River (Del.) (1)
Choptank River (Md.) (1)
Clear Lake (Tex.) (1)
Clearwater County (Idaho) (1)
Clearwater River Region (Jefferson County, Washington (State)) (1)
Cold Bay (Alaska) (1)
Coleharbor Region (N.D.) (1)
Colorado Desert (Calif. and Mexico) (1)
Colorado Monte Vista National Wildlife Refuge (1)
Colorado River (Colo. and Mexico) (1)
Colorado River Valley (Colo.-Mexico) (1)
Colorado River Watershed (1)
Columbia River Basin (1)
Columbia River Gorge (Or. and Wash.) (1)
Columbia River Gorge National Scenic Area (Or. and Wash.) (1)
Connecticut River (1)
Copper River (Alaska) (1)
Coquille River (Or.) (1)
Corpus Christi Bay (Tex.) (1)
Creedman Coulee National Wildlife Refuge (Mont.) (1)
Croatan National Forest (N.C.) (1)
Crotan National Forest (N.C.) (1)
Cumberland River (Ky. and Tenn.) (1)
Cumberland River Watershed (Ky. and Tenn.) (1)
DeSoto National Wildlife Refuge (Iowa and Neb.) (1)
Del Norte County (Calif.) (1)
Delaware River (N.Y.-Del. and N.J.) (1)
Delta (Miss. : Region) (1)
Delta National Wildlife Refuge (La.) (1)
Deschutes County (Or.) (1)
Deuel County (S.D.) (1)
Dryden Dam (Washington (State)) (1)
Dryden Dam Region (Washington (State)) (1)
East (U.S.) (1)
East Bay Municipal Utility District (Calif.) (1)
East China Sea (1)
Eel River Basin (Calif.) (1)
Elizabeth A. Morton National Wildlife Refuge (N.Y.) (1)
Elizabeth Hartwell Mason Neck National Wildlife Refuge (Va.) (1)
Elk Grove (Calif.) (1)
Elko County (Nev.) (1)
Ennis (Mont.) (1)
Environmental aspects (1)
Erie Canal (N.Y.) (1)
Essex County (Vt.) (1)
Eureka Valley (Calif.) (1)
Farallon National Wildlife Refuge (Calif.) (1)
Finns Point (Pennsville, N.J.) (1)
Flathead County (Mont.) (1)
Flint River Watershed (Ga.) (1)
Florida Bay (Fla.) (1)
Florida Panhandle (Fla.) (1)
Fort McClellan (Ala.) (1)
Four Corners region (1)
Fox River (Columbia County-Brown County) (Wis.) (1)
Fox River Valley (Columbia County-Brown County) (Wis.) (1)
Friant (Calif.) (1)
Fundy, Bay of (1)
Galveston Island (Tex.) (1)
Gardnerville (Nev.) (1)
Gila River (N.M. and Ariz.) (1)
Glenwood Region (Washington (State)) (1)
Grace and Robert Miller Ranch (Wyo.) (1)
Grands Lacs (1)
Grays Harbor National Wildlife Refuge (Wash.) (1)
Grays Lake National Wildlife Refuge (Idaho) (1)
Great Lakes Region (1)
Green River Watershed (Wyo.-Utah) (1)
Guadalupe-Nipomo Dunes National Wildlife Refuge (Calif.) (1)
Guam National Wildlife Refuge (Guam) (1)
Gulf Coast (Mexico) (1)
Gulf Region (Miss.) (1)
Gunnison River (Colo.) (1)
Gunnison River Watershed (Colo.) (1)
Harney County (Or.) (1)
Headquarters Site (Or.) (1)
Heber Springs (Ark.) (1)
Horicon Marsh (Wis.) (1)
Houston (Tex.) (1)
Hudson River (N.Y. and N.J.) (1)
Humboldt County (Nev.) (1)
Huron Wetland Management District (S.D.) (1)
Huron, Lake (Mich. and Ont.) (1)
Iliamna National Resource Range (Proposed) (Alaska) (1)
Illinois River (Ill.) (1)
Indian Creek (Tenn.) (1)
Inyo County (Calif.) (1)