Alexandria Waterfront (DC waters)
Algonkian Regional Park
American Bird Conservancy Office
Anacostia Riverwalk Trail--Navy Yard
Ashby Pond Conservancy Site
Audubon Naturalist Society - Woodend Sanctuary
Baker Park, Frederick
Barcroft Park
Belle Haven Park--North Parking Area
Ben Brenman Park
Benjamin Banneker Park
Bethesda Church Rd. Pond
Beverley Park (aka "The Pit")
Blue Mash Nature Trail
Broadlands Wetlands Nature Preserve
Brookside Gardens
Brookside Nature Center
Bull Run Marina Regional Park
Bull Run Regional Park
Burr Industrial Park ponds
C&O Canal--Fletcher's Cove (Fletcher's Boathouse)
C&O Canal--Lock 34
C&O Canal--Locks 10-12
C&O Canal--Pennyfield Lock
C&O Canal--Riley's Lock
C&O Canal--Sycamore Landing
C&O Canal--Violette's Lock
Cabin John Regional Park
Cameron Run
Claymont Wetland
Clifton Institute (Restricted Access)
Columbia Gardens Cemetery
Constitution Gardens and Reflecting Pool
Conway-Robinson State Forest
Croydon Creek Nature Center, Rockville
Darnestown Rd. ponds
Discovery Boulevard Pond
Dulles Airport--Pond
Dumbarton Oaks Park
Dyke Marsh Wildlife Preserve
Eakin Community Park
East Potomac Park--Hains Pt.
Fort C.F. Smith Park
Fort Reno
Fort Totten Park
Fountain Rock Park and Nature Center
Four Mile Run Park
Frying Pan Farm Park
George Mason University--Mason Pond
George Washington Parkway Pedestrian Bridge
Georgetown Reservoir
Glencarlyn Park
Glover Park
Great Falls Park
Green Spring Garden Park
Gulf Branch Natural Area
Hibler Road field
Hidden Creek Country Club
Homestead Farm (restricted access)
Hughes Hollow - McKee Beshers WMA
Hughes Rd. polo fields
Hunting Creek Bridge
Huntley Meadows Park
Huntley Meadows Park--Observation Tower
Huntley Meadows Park--Visitor Center Feeder Area
Huntsman Lake
Jefferson Manor Park
John Rissler Road
Jones Point Park
Kenilworth Park and Aquatic Gardens
Kingman Island North - Langston Golf Course
LBJ Memorial Grove - Columbia Island Marina
Lake Accotink Park
Lake Artemesia
Lake Churchill, Germantown
Lake Fairfax
Lake Frank
Lake Needwood
Laurel Hill Equestrian Area--Workhouse Loop
Leopold's Preserve
Lilypons Water Gardens
Little Bennett Regional Park
Loftridge Park
Lower Four Mile Run
Lower Senate Park
Manassas National Battlefield Park
Manassas Park Community Center
Meadowbrook Park (Montgomery Co.)
Meadowlark Botanical Garden--Perimeter Trail.
Meadowlark Botanical Gardens
Meadowood Recreation Area
Merrimac Farm WMA
Monticello Park
NIH campus (restricted access; photo i.d. needed)
National Harbor
National Mall
National Museum of the American Indian
National Zoological Park
New Bristow Village pond
Nokesville Road Interchange Ponds
Nottoway Park
Occoquan Bay NWR
Oronoco Bay Park
Oxon Hill Farm
Prince William Co.--Landfill
Reagan National Airport
Rectortown Road Bridge
Regency Golf Course & Nature Trail
Riverbend Park
Rock Creek Golf Course
Rock Creek Park
Rock Creek Park--Dog Run
Rock Creek Park--Maintenance Yard
Rock Creek Park--West End
Royal Lake Park
Rust Nature Sanctuary
Schooley Mill Park
Scott's Run Nature Preserve
Shenandoah University River Campus at Cool Spring Battlefield
Silver Lake Regional Park
Sligo Creek Park--Wayne Ave. to south end
Sligo Creek Park--north end to Dennis Ave.
South Germantown Recreational Park
Sunrise Valley Park (Herndon Monroe Wetland Preserve)
Theodore Roosevelt Island
Tide Lock Park (DC waters)
Tuckahoe Park
Tuscarora Creek Development
U.S. Botanic Garden and Bartholdi Park
University of Maryland--McKeldin Mall
Vienna Reservoir
Walker Nature Center--Reston
Walter Pierce Park
Washington Sailing Marina (DC waters)
Waterfront Park
West Potomac Park--Tidal Basin
Wheaton Claridge Park
Wheaton Regional Park
Willard Avenue Neighborhood Park
Wolf Trap National Park
Woodbridge Veterans Memorial Park
Woodglen Lake
Woottons Mill Park