16th Street South (Swift Roost)
17th Street N. and N. Taylor Street (Mississippi Kite Spot)
Academy Hill Park
Accotink Bay Wildlife Refuge
African American Heritage Memorial Park
Agricultural History Farm Park
Air Force Memorial
Airlie Conference Center (Restricted Access)
Alder Lake
Alexandria National Cemetery
Alexandria Waterfront (DC waters)
Algonkian Nature Preserve--Sanctuary Trail
Algonkian Regional Park
Algonkian Regional Park--Potomac Heritage Trail
All Veterans Park
Altona Marsh
American Bird Conservancy Office
American Legion Bridge
Anacostia Park
Anacostia River Trail (PG Co.)
Anacostia Riverwalk Trail--Navy Yard
Annandale Community Park
Antietam National Battlefield--Snavely Ford Trail
Appalachian Trail--Raven Rocks
Appalachian Trail--Snickers Gap to Bears Den
Arlington National Cemetery
Arrowbrook Park
Arrowhead Park
Ashburn Lake
Ashburn Park
Ashburn Village Lake
Ashby Pond Conservancy Site
Aspen Hill
Aspen Hill Memorial Park
Atoka ponds
Audrey Carroll Audubon Sanctuary
Audubon Naturalist Society - Woodend Sanctuary
Avenel Local Park
Avondale Neighborhood Park
BCC-IWLA (private)
BRCES--Arnold Lane
BRCES--Powerline Cut
BRCES--Sawmill and Butterfly Alley
BRCES--Visitor Center
BRCES--Wood Thrush Trail
Baker Park, Frederick
Baker Street Park
Baldwin Park/Manassas Museum
Ball's Bluff Battlefield Regional Park
Ballenger Creek Park
Ballston Beaver Pond
Banshee Reeks Nature Preserve
Barcroft Park
Barnard Hill Park
Baron Cameron Park
Barrel Oak Winery
Battery Kemble Park
Bayfield Lane Residential Neighborhood (Mississippi Kite Spot)
Beagle Institute Farm
Bears Den Trail Center
Beaverdam Creek Reservoir
Belle Haven Park--Marina
Belle Haven Park--North Parking Area
Belle Haven Park--Picnic Area
Belle's Bird Sanctuary Park
Belmont Bay
Belmont Bay Marina
Belvoir Pond
Ben Brenman Park
Ben Lomond Regional Park
Benjamin Banneker Park
Bennett Creek Conservation Park
Bentley Park Stormwater Ponds
Berman Park
Berrys Boat Ramp
Berryville--Springsury Road Development
Best Buy pond (Bethel)
Bethesda Church Rd. Pond
Bethesda Trolley Trail--Battery La.-Woodmont Ave.
Bethesda Trolley Trail--Tuckerman La.-Nicholson La.
Beverley Park (aka "The Pit")
Big Chimneys Park
Black Hill RP--Boat Ramp area
Black Hill RP--Crystal Rock Trail
Black Hill RP--Little Seneca Lake, Rte.121
Black Hill RP--Ten Mile Creek area, trails and lake
Black Hill Regional Park
Bladensburg Waterfront Park
Bles Park
Blockhouse Point Conservation Park
Blue Mash Nature Trail
Blue Ridge Center for Environmental Stewardship
Bluemont Park
Bohrer Park
Breewood Park
Brentsville Park
Brewer House Rd. Pond
Briar Patch Park
Briggs Animal Adoption Center
Briggs Road
Bright Pond
Bristoe Station Battlefield
Bristow Road Sod Farm
Broad Branch Stream Park
Broadlands Blvd--Forest Trails
Broadlands Wetlands Nature Preserve
Brookfield Park
Brookside Gardens
Brookside Nature Center
Broome Athletic Park
Brunswick Riverside Park
Buck Lodge Park
Bull Run Marina Regional Park
Bull Run Mountains State Natural Area Preserve
Bull Run Post Office Road
Bull Run Regional Park
Burgundy Farm Country Day School
Burke Lake Park
Burr Industrial Park ponds
Burtonsville Park
Buttermilk Creek Trail
Buzzard Point Park
Byrd Park
C&O Canal--Antietam Creek
C&O Canal--Blockhouse Point
C&O Canal--Brickyard Rd. - Marsden Tract
C&O Canal--Brunswick
C&O Canal--Chain Bridge
C&O Canal--Dam #3
C&O Canal--Dargan's Bend
C&O Canal--Edwards Ferry
C&O Canal--Fletcher's Cove (Fletcher's Boathouse)
C&O Canal--Great Falls
C&O Canal--Harpers Ferry
C&O Canal--Lander
C&O Canal--Little Falls
C&O Canal--Lock 34
C&O Canal--Lock 6
C&O Canal--Lock 7
C&O Canal--Lock 8
C&O Canal--Locks 1-4
C&O Canal--Locks 10-12
C&O Canal--Mountain Lock (Lock 37)
C&O Canal--Mouth of the Monocacy (Fred. Co.)
C&O Canal--Mouth of the Monocacy (Mont. Co.)
C&O Canal--Nolands Ferry
C&O Canal--Old Angler's Inn - Billy Goat Trail Section B
C&O Canal--Old Anglers Inn - Bear Island
C&O Canal--Pack Horse Ford
C&O Canal--Pennyfield Lock
C&O Canal--Point of Rocks
C&O Canal--Potomac Boat Club
C&O Canal--Riley's Lock
C&O Canal--Swains Lock
C&O Canal--Sycamore Landing
C&O Canal--Violette's Lock
C&O Canal--White's Ferry
Cabin John RP--Locust Grove Nature Center
Cabin John RP--McDonnell Campground
Cabin John RP--Power-line Cut
Cabin John Regional Park
Calmes Neck
Cameron Pond (Reston)
Cameron Run
Camp Highroad
Candlewood
Cannon Branch Fort
Cap Stine Road
Capital Crescent Trail at Rock Creek Trail
Capital Crescent Trail--Bethesda
Carderock Recreation Area
Carr Lane
Carter Hall Conference Center
Castlemans Ferry Boat Ramp
Catoctin Creek Park
Cavalier Trail Park
Cavanaugh Dr. - future school site
Cedar Run Wetlands
Cedar and Beech Lakes (Ashburn)
Central Park at One Loudoun
Chaconas Property (Howard Co.)
Champion Lake
Chantilly Park
Chapman DeMary Trail
Cherry Hill Park
Cherry Hill Park (PG Co.)
Chevy Chase Lake Dr
Chinn Park
Chinquapin Park Recreation Center & Aquatics Facility
Chuck Wade Turf Farm
Clark's Crossing Park
Claude Moore Colonial Farm
Claude Moore Park
Claymont Wetland
Clemyjontri Park/Langley Fork Park
Cleveland Park
Clifton Institute (Restricted Access)
Clifton Institute--Adams Pasture (restricted access)
College Park--Cherry Hill Road Community Park
Colmar Manor Park
Colston Road Pond
Columbia Gardens Cemetary
Columbia Gardens Cemetery
Columbia Local Park, Burtonsville
Colvin Lane pond
Colvin Run
Colvin Run Mill Park
Constitution Gardens and Reflecting Pool
Conway-Robinson State Forest
Cool Spring Preserve
Country Club Rd
Crabbs Branch Pond
CraftWorks at Cool Spring
Creighton Road Pond
Croydon Creek Nature Center, Rockville
Cub Run RECenter
Cub Run Stream Valley Park (North)
Cub Run Stream Valley Park (South)
Cub Run Trail--Chantilly Country Club area
Custis Trail
Daingerfield Island
Daisy Road Turf Farm
Dale City Safety Rest Area (Southbound)
Dalecarlia Reservoir - DC portion
Daniels Run Park
Darnestown Rd. ponds
Dickerson Conservation Park
Difficult Run Stream Valley Park (Georgetown Pike)
Difficult Run Stream Valley Park (Great Falls)
Difficult Run Stream Valley Park (Oakton)
Difficult Run Stream Valley Park (Reston/NWF)
Discovery Boulevard Pond
Dogue Creek Bridge
Donald Frady Park
Dora Kelley Nature Park
Doves Landing Park
Dry Seneca Creek Park
Dulles Airport- Snowy Owl Observation Point
Dulles Airport--Pond
Dulles Greenway Wetlands Mitigation Project
Dulles Greenway Wetlands Mitigation Project--South
Dumbarton Oaks Park
Dyke Marsh Wildlife Preserve
Eakin Community Park
Earle Road Pond
East Potomac Park--Hains Pt.
Ecovillage Taylorstown
Ed Sears Road
Edgewater Pond
Edwards Ferry Landing Park
Elizabeth Mills Riverfront Park
Elklick Woodlands Natural Area Preserve
Ellanor C. Lawrence Park
Ellerslie Road
Evans Parkway Park
Fairfax Co--Pinewood Greens Subdivision
Fairfax County Parkway Trail--Stream Corridor
Fairfax County--Landfill
Fairfax Hills Park
Fairland Recreational Park
Fairland Regional Park (PG Co.)
Farm Pond at Shepherd's Mill Road and Castleman Road
Fauquier County Landfill
Fauquier Education Farm
Flat Lick Stream Valley Park
Fleetwood Farm Pond Number Two
Florence Rd. Silage Pit
Flowing Springs Park
Folly Lick Stream Valley Park
Fort Bayard Park
Fort Belvoir (restricted access)
Fort Bennet Park
Fort Bunker Hill Park
Fort C.F. Smith Park
Fort Dupont Park
Fort Foote Park
Fort Marcy Park
Fort Reno
Fort Totten Park
Fort Ward Park
Founders Park
Fountain Rock Park and Nature Center
Fountainhead Regional Park
Four Mile Run Park
Fox Haven Farm
Franconia Forest Park
Franconia-Springfield Metro Station
Franklin Farm pond
Franklin Park
Franklintown Road
Fraser Preserve (The Nature Conservancy)
Fred Archibald Audubon Sanctuary
Fred Crabtree Park
Frederick Airport
Frederick Douglass National Historic Site
Frog Pond Early Learning Center
Frying Pan Farm Park
Fulton Pond
Fulton--Lime Kiln and Reservoir Roads Pond
G.R. Thompson State WMA
Gaines Street (Mississippi Kite Spot)
Gambrill SP--High Knob
Gambrill SP--North Frederick Overlook
Gambrill SP--picnic area & campground
Gambrill State Park
Gangplank Marina
Gap Run Road Pond
Gapland Rd. Retention Pond
Gathland State Park
George Hellwig Memorial Park
George Mason Conference Center
George Mason University--Mason Pond
George Mason University--Recreation & Athletic Center Woods
George Washington Memorial Parkway--First Overlook
George Washington Memorial Parkway--Second Overlook
George Washington Parkway Pedestrian Bridge
Georgetown Reservoir
Georgetown Waterfront Park
Germantown Town Center Urban Park
Gerry Connolly Cross County Trail--Pohick Creek and Middle Run
Gilbert's Corner Regional Park
Glade Valley Stream
Glencannon Park
Glencarlyn Park
Glencarlyn Park--Picnic Area
Glencarlyn Park--Sparrow Pond
Glenstone Museum (restricted access)
Glenwood Cemetery
Glover Park
Glover-Archbold Park--North end
Gravelly Point (DC waters)
Gravelly Point Boat Ramp
Gravelly Point Park
Great Falls Chase Recreation Center
Great Falls Library Park
Great Falls Nike Park
Great Falls Park
Great Seneca Park
Great Seneca Stream Valley Park
Great Seneca Stream Valley Park--Greenway Trail
Green Hills Farm Wetland
Green Spring Garden Park
Greendale Golf Course
Greenfield Road
Greenway Trail, Germantown
Greenway Trail--Huntmaster Rd to Brink Rd (Incl. Goshen Park)
Grist Mill Park
Grist Mill Park
Gulf Branch Natural Area
Gunners Lake
Gunston Elementary School
Harper's Ferry NP- - Rapids
Harper's Ferry National Historical Park
Harpers Ferry NHP-- Schoolhouse Ridge -South
Harpers Ferry NHP--Green Blaze Trail
Harpers Ferry NHP--Maryland Heights
Harpers Ferry NHP--Murphy Farm
Harpers Ferry NHP--Schoolhouse Ridge- North
Harpers Ferry NHP-Bolivar Heights Battlefield
Harpers Ferry NHP-Nash Farm
Harrison Road
Haycock Longfellow Park
Hemlock Overlook Regional Park
Heritage Hunt Golf & Country Club
Herndon Centennial Golf Course
Herndon High School
Heurich Park
Hibler Road field
Hidden Creek Country Club
Hidden Pond Park
Hill Center at the Old Naval Hospital
Hilltop House Overlook
Historic Blenheim
Holmes Run Stream Valley Park
Homestead Farm (restricted access)
Horsepen Run Stream Valley Park
Horsepen Run Trail
Houchens Property--Woodbine Morgan Rd
Howard E. Herman Park
Hoyles Mill Conservation Park
Hughes Hollow - McKee Beshers WMA
Hughes Rd. polo fields
Hughes Road--Hunt View Farm (private)
Hunting Creek Bridge
Huntington Park
Huntley Meadows Park
Huntley Meadows Park--Cedar Trail Loop
Huntley Meadows Park--Hike and Bike Trail
Huntley Meadows Park--Observation Tower
Huntley Meadows Park--Visitor Center Feeder Area
Huntley Meadows Park--Woodcock Meadow
Huntsman Lake
I-70 at East St. storm pond, Frederick
ICC Bikepath--Rt.97 to Layhill Rd.
Ikea Wetlands
Independence Park
Indian Creek marsh, Greenbelt
International Conservation House, 7078 Airlie Road
Isaac Crossman Park at Four Mile Run
Jackson Miles Abbott Wetlands Refuge
James S Long Regional Park
Janelia Farm--Riverside
Jefferson Manor Park
Jennie Dean Park
John Rissler Road
Jones Point Park
Jones Point Park (DC waters)
Joseph D Reading County Park
Kalorama Park
Ken-Gar Palisades Park
Kenilworth Park and Aquatic Gardens
Kenmore Middle School athletic fields
Kershner's Pond
Kinchloe Road
Kincora Wetlands
King Farm Blvd. retention ponds
Kingman Island North - Langston Golf Course
Kingman Island South - Kingman Lake/Heritage Island
Kingstowne Lake
Kingstowne Park
Klingle Valley Trail
LBJ Memorial Grove - Columbia Island Marina
LM Stevens Park
Lacey Woods Park
Lafayette Park
Lake Accotink Park
Lake Anne (Reston)
Lake Artemesia
Lake Ashby
Lake Audubon
Lake Barcroft
Lake Braddock
Lake Brittle
Lake Churchill, Germantown
Lake Cook
Lake Fairfax
Lake Fairfax Park
Lake Frank
Lake Hallowell
Lake Linganore
Lake Manassas
Lake Mercer
Lake Merle
Lake Needwood
Lake Needwood - north end
Lake Newport
Lake Ridge Park
Lake Thoreau
Lake Whetstone
Lamb's Knoll
Lane's Mill Park
Larriland Farm Pond
Laural Hill Park
Laurel Hill Equestrian Area--Workhouse Loop
Laurel Hill Equestrian Center
Layhill Park
Laytonsville Pond
Laytonsville Turf Farm
Leesburg--Morven Park (Ridge Top Trail)
Lenclair Park
Leopold's Preserve
Liberia Plantation House
Lily Pons Rd.
Lilypons Water Gardens
Lincoln Park
Linden Fire Tower
Little Bennett RP--Froggy Hollow Trail
Little Bennett RP--Kingsley Trail
Little Bennett RP--Western Piedmont Trail
Little Bennett RP--Wilson Mill Trail
Little Bennett Regional Park
Little Difficult Run Stream Valley Park
Little Difficult Run Stream Valley Park (Folkstone)
Little Falls Branch Stream Valley Park
Little Falls Parkway - Norwood Park
Little Georgetown of Grace Cemetery
Little Paint Branch Trail
Llewellyn Manor Way
Lockes Boat Ramp
Loftridge Park
Lois Y. Green Conservation Park
Long Branch Nature Center & Park
Long Branch Trail--Carroll Ave.- Piney Branch Rd.
Long Branch Valley Stream Trail
Long Bridge Park
Loudoun County Wetlands and Stream Bank Phase III
Loudoun Water Authority
Lower Cabin John Creek
Lower Four Mile Run
Lower Senate Park
Lubber Run Park
Lucasville Road pond
Lucketts Area
Luria Park
Lyndora Park
MLK Rec. Park
Madison Manor Park
Magruder Branch Trail--Sweepstakes Rd. trailhead
Magruder Branch Trail--Watkins Rd. to Log House Rd.
Magruder Park and environs
Manassas Airport
Manassas National Battlefied Park--Van Pelt
Manassas National Battlefield Park
Manassas National Battlefield Park--Battery Heights
Manassas National Battlefield Park--Brawner Farm
Manassas National Battlefield Park--Brownsville Tract
Manassas National Battlefield Park--Chinn Ridge Area
Manassas National Battlefield Park--Deep Cut Trail
Manassas National Battlefield Park--Maintenance Area
Manassas National Battlefield Park--Matthews Hill/Stone House
Manassas National Battlefield Park--NW Quadrant
Manassas National Battlefield Park--New York Monument
Manassas National Battlefield Park--Portici Area
Manassas National Battlefield Park--Sparrow Alley
Manassas National Battlefield Park--Stuart Hill Visitor Center
Manassas Park Community Center
Manassas Safety Rest Area (Eastbound)
Manassas Safety Rest Area/Welcome Center (Westbound)
Mantua Park
Mark Twain Park
Marymount University
Mason District Park
Mason Neck West Park
Mattie JT Stepanek Park
Maydale Nature Center, Cloverly
Mayne's Tree Farm (private)
McClellan Drive retention ponds
McCrillis Gardens - Woods Academy
McKenny Hills Park
McMillan Res. Grasslands
McMillan Reservoir
McRaes Road Pond Area
Meadowbrook Park (Montgomery Co.)
Meadowlark Botanical Garden--Perimeter Trail.
Meadowlark Botanical Gardens
Meadowood Recreation Area
Meadowood Recreation Area
Meadowood Recreation Area--Mustang Trailhead
Meadowside Nature Center
Melvin Hazen Park
Meridian Hill Park
Merrimac Farm WMA
Merrimac Farm WMA--Pond Trail
Middle Run Stream Valley Park
Middlesex Drive pond
Middletown Park
Millville--Bloomery Rd
Mitchell Park
Monocacy National Battlefield
Monocacy National Battlefield--Ford Loop Trail
Monocacy National Battlefield--Gambrill Mill Trail
Monocacy National Battlefield--Thomas Farm Trail
Monocacy Natural Resources Management Area
Monocacy River Path
Monticello Park
Morven Park
Mount Eccentric Road Stream
Mount Vernon Unitarian Church
Moyer Rd. Park
Mt. Briar Wetlands Preserve
Muddy Branch Greenway Trail--Pennyfield entrance
NFATC (Foreign Service Institute--restricted access)
NIH Animal Center (private)
NIH campus (restricted access; photo i.d. needed)
National Arboretum
National Arboretum--Asian Collection
National Arboretum--Azalea Collection and Mt. Hamilton
National Arboretum--Fern Valley
National Arboretum--Grove of State Trees
National Archives at College Park - Jogging Trail
National Cathedral--Bishop's Garden & Olmsted Woods
National Harbor
National Mall
National Museum of the American Indian
National Zoological Park
Nationals Park
Naval Research Lab
New Bristow Village pond
New Design Road
Nokesville Road Interchange Ponds
North Chevy Chase Park
North Fork Wetlands
North Germantown Greenway
North Point Parks Loop Trail (The Pink Trail)
Northern Fauquier County Community Park
Northern Virginia Community College--Alexandria
Northern Virginia Community College--Annandale
Northern Virginia Community College--Loudoun
Northside Park
Northwest Branch Trail
Northwest Branch Trail--Burnt Mills
Northwest Branch, Anacostia River
Nottoway Park
Oak Marr Park
Oak Spring Garden Foundation
Oaks Landfill (private)
Oakton Community Park
Oakton Ridge Court Resovoir
Oakwood Cemetery
Oatlands Historic House and Gardens
Occoquan Bay NWR
Occoquan Bay NWR--Delta Road
Occoquan NWR--Banding Station
Occoquan Regional Park
Occoquan Sewage Plant (UOSA)
Oland Road
Old Baltimore Road - Ford Area
Olde Izaak Walton Park
Oronoco Bay Park
Ovid Hazen Wells Recreational Park
Ox Hill Battlefield Park
Oxon Hill Farm
Paint Branch Stream Valley Park
Paint Branch Trail (Prince George's County)
Paint Branch Trail North (Montgomery Co.)
Paint Branch Trail--Jackson Rd. access
Palisades Park
Partnership Rd. Farm Pond
Patton Turf Farm
Patuxent River SP--Annapolis Rock Rd
Patuxent River SP--Hipsley Mill Rd. (Howard Co.)
Patuxent River SP--Hipsley Mill Rd. (Montgomery Co.)
Patuxent River SP--Howard Chapel Rd
Patuxent River SP--Long Corner Rd
Patuxent River SP--Mullinix
Patuxent River SP--Rte. 97 (Montgomery Co.)
Penderbrook Golf Club--Pond No. 1
Penderbrook Golf Club--Ponds No. 3 & 4
Peter Burr Farm
Pev's Paintball Fields
Philip A. Bolen Memorial Park
Philips Farm
Piedmont Community (gated community/restricted access)
Pimmit Run Stream Valley Park
Pimmit Run--Mouth
Pinecliff Park
Pinecrest Golf Course
Pleasant Valley Golf Course
Pohick Bay Golf Course
Pohick Bay Regional Park
Pohick Bay Regional Park--Boat Ramp
Point of Rocks Bridge
Polk Avenue Park
Poplar Ford Park
Poplar Spring Animal Sanctuary (private)
Poplar Springs Park
Poplar Tree Park
Potomac Falls Home Depot Pond
Potomac Greens Park
Potomac Heritage Trail
Potomac Overlook Regional Park
Potomac River--Rt. 340 bridge
Potomac Yard ponds
Prince William Co.--Landfill
Prince William County, rural - Aden, Nokesville, Brentsville
Quade (Private)
Quincy Park
RFK Stadium Parking Lot
Rachel Carson Conservation Park
Rady Park
Ralph Rd. retention pond
Ranger Road Park
Ray's Meadow Local Park
Reagan National Airport
Rectortown Road Bridge
Rectortown--Short-eared Owl fields
Red Door Store Historical/Cultural Park
Red Rock Wilderness Overlook Regional Park
Regency Golf Course & Nature Trail
Reno Monument
Resthaven Memorial Cemetery
Reston Association--Public Path
Reston National Golf Course
Reston Town Center (Peregrine Falcon spot)
Reston Walking Trail--Fieldthorn Drive Access
Retreat Rd.
Rickman/Woodstock Equestrian Park
Riderwood Village (restricted access)
Ridge Rd. Recreational Park
River Bend Park
River Creek
River Mill Park
Riverbend Park
Roaches Run Waterfowl Sanctuary
Rock Creek Cemetery
Rock Creek Golf Course
Rock Creek Park
Rock Creek Park -- Conn. Ave. to National Zoo
Rock Creek Park Community Garden
Rock Creek Park Trail - Q St. NW
Rock Creek Park--Beach Drive - Park Rd.
Rock Creek Park--Beach Drive east of Kensington Parkway
Rock Creek Park--Beach Drive west of Kensington Parkway
Rock Creek Park--Chevy Chase
Rock Creek Park--Dog Run
Rock Creek Park--Fort DeRussy
Rock Creek Park--Klingle Mansion
Rock Creek Park--Maintenance Yard
Rock Creek Park--Mass. Ave. - Conn. Ave.
Rock Creek Park--Melvin C. Hazen Trail
Rock Creek Park--Nature Center area
Rock Creek Park--Peirce Mill
Rock Creek Park--Ross Drive
Rock Creek Park--Sherrill Drive
Rock Creek Park--The Ridge
Rock Creek Park--Valley-Pine-Holly loop.
Rock Creek Park--West End
Rock Creek Park--Western Ridge Trail
Rock Creek Park--upper Beach Drive
Rock Creek Trail--Linthicum St. Trailhead
Rock Hill District Park
Rock Spring Park
Rocky Gorge Reservoir--Browns Bridge (Howard County)
Rocky Gorge Reservoir--Browns Bridge (Montgomery County)
Rocky Run Park
Rocky Run Stream Valley
Rokeby Farm (PRIVATE)
Rose Hill Power Lines
Roundtree Park
Route 621 Stream Crossing
Route 688 Leeds Manor Road
Royal Lake Park
Runnymede Park
Russia Branch Trail
Rust Nature Sanctuary
Sandy Run Regional Park
Schooley Mill Park
Scott's Run Nature Preserve
Seneca Creek Greenway Trail--Brink Road to Watkins Mill Road
Seneca Creek Greenway Trail--Huntmaster Road to Watkins Road
Seneca Creek SP--Clopper Lake
Seneca Creek SP--Riffle Ford Rd.
Seneca Creek SP--Visitor Center Area
Seneca Creek State Park
Seneca Ridge Trail--Black Rock Mill
Seneca Trailhead Park/Seneca Tract
Serpentine Barrens Conservation Park
Shannondale Lake
Shannondale Springs WMA
Shenandoah River-Bloomery Rd.--Millville-Rt 115
Shenandoah University River Campus at Cool Spring Battlefield
Shirlington Park
Signal Hill Park
Silver Lake Regional Park
Sky Meadows SP
Sky Meadows SP--Ambassador Whitehouse Trail
Sky Meadows SP--Appalachian Trail
Sky Meadows SP--Boston Mill Road section of Gap Run Trail
Sky Meadows SP--Bridle Trail
Sky Meadows SP--Entrance road pond
Sky Meadows SP--Farm Ponds/Barn Area
Sky Meadows SP--Fishing Pond area
Sky Meadows SP--Gap Run Trail
Sky Meadows SP--North Ridge Trail
Sky Meadows SP--Old Trail
Sky Meadows SP--Piedmont Overlook Trail
Sky Meadows SP--Rolling Meadow Trail
Sky Meadows SP--Shearman's Mill Loop
Sky Meadows SP--Snowden Trail
Sky Meadows SP--South Ridge Trail
Sky Meadows SP--Visitor Center area
Sky Meadows SP--Walnut Grove area
Sleepy Hollow Park
Sleeters Lake
Sligo Creek Park--Dennis Ave. to Wayne Ave.
Sligo Creek Park--Wayne Ave. to south end
Sligo Creek Park--north end to Dennis Ave.
Smithfield Farm
Smithsonian Institution
Snakeden Branch
Snickers Gap Hawk Watch
Soapstone Valley Park
South Capitol St. Bridge
South Germantown Recreational Park
South Lakes High School
South Run Stream Valley Trail--South Run Park to Burke Lake
Spout Run Park
Spring Valley Park
Springdale Drive Quarry
St. Louis Road fields
Stanton Park
Stanton Park--Park Ave
Stone Bridge Area Trails
Stonegate Scenic Easement
Stratton Woods Park
Stream Valley Park
Stringfellow Soccer Park
Sugarland Crossing #1
Sugarland Run Trail
Sugarloaf Mt.
Sugarloaf Mt. Rd.
Sully Historic Site
Sully Woodlands
Summer Lake
Summit Hall Turf Farm (private)
Sundown Rd. Park
Sunrise Valley Park (Herndon Monroe Wetland Preserve)
Suzanne R. Kane Nature Preserve and woods behind ODV
Swift Shoals Road
Sycamore Lake
Sycamore Landing Rd. fields
Tackett's Mill Pond
Tamarack Bog
Tamarack Park
Temple Hall Regional Farm Park
Tenerife Road
Terraset Trail
The Ellipse
The Field School
The George Washington Masonic National Memorial
The Pentagon (restricted access)
The Pink Trail--North Hills Picnic Pavilion
The Turner Farm/Observatory Park
The Turquoise Trail
The White House
The Yards Park
Theodore Roosevelt Island
Thompson Boat Center
Thompson WMA- Thompson Lake Area
Thompson WMA--Appalachian Parking Area
Thompson WMA--Trillium Trail
Thoreau Middle School
Three Sisters Islands
Tide Lock Park
Tide Lock Park (DC waters)
Tilden Woods Park
Town of Occoquan
Tregaron Conservancy
Triadelphia Reservoir (Howard County)
Triadelphia Reservoir--Big Branch
Triadelphia Reservoir--Big Branch trail
Triadelphia Reservoir--Brighton Dam (Howard County)
Triadelphia Reservoir--Brighton Dam (Montgomery County)
Triadelphia Reservoir--Cattail Creek
Triadelphia Reservoir--Greenbridge Rd.
Triadelphia Reservoir--Pigtail Branch
Triadelphia Reservoir--Triadelphia Lake Rd.
Triadelphia Reservoir--Triadelphia trail
Tuckahoe Park
Tucker Lane, Ashton
Turkey Run Park
Tuscarora Creek Development
Twin Branches Trail
U.S. Botanic Garden and Bartholdi Park
US Marine Corps War Memorial (Iwo Jima)
University of Maryland--McKeldin Mall
University of Maryland--Technology Dr. marsh
University of Maryland--XFINITY Center meadow
Upper Snakeden Stream Valley, Reston VA
Upper Watts Branch Park
Upton Hill Regional Park
Valley View Park
Van Dyck Park
Veirs Mill Park
Verizon ponds (Ashburn)
Victory Lakes
Vienna Reservoir
Vint Hill Farms Park
Virginia Chase County Park
Wakefield Park
Walker Nature Center--Reston
Walter Pierce Park
Waples Mill Elementry School
Waples Mill Meadow Park
Warfield's Pond Park
Warrenton Aquatic & Recreation Facility
Warrenton Reservoir
Washington & Old Dominion Trail--Hunter Mill Road
Washington & Old Dominion Trail--Vienna Town Green
Washington &Old Dominion Trail--Van Buren to Herndon Parkway
Washington Grove Forest Preserve
Washington Hilton (NAOC 2016)
Washington Sailing Marina (DC waters)
Waterfront Park
Watermelon Park and Campground
Watkins Ponds - King Farm Stream Park
Weather Service Road
Webb Nature Sanctuary
Wentworth Green Walking Trail
West Potomac Park--Tidal Basin
Western Regional Park
Westgrove Park
Weston WMA
Westwood Country Club
Weverton
Wheaton Branch Stormwater Ponds
Wheaton Claridge Park
Wheaton Regional Park
Wheaton Regional Park--mini-train tracks/Pine Lake
White Ground Road
White Oaks Park
White's Ford Regional Park
White's Mill Trail
Whitehaven Park
Whittier Lake Park
Whittier Woods Park
Wildcat Mountain Natural Area (restricted access)
Wiles Branch Park, Middletown
Willard Avenue Neighborhood Park
Willingham Knolls Park
Willow Ponds Park
Willowsford's Everfield Community Park
Wilson Bridge (Prince George's Co.)
Windmill Hill Park
Winkler Botanical Preserve
Wolf Trails Park
Wolf Trap National Park
Wolftrap Creek Boardwalk
Woodbridge Veterans Memorial Park
Woodglen Lake
Woodlawn Manor Cultural Park
Woodmar Farm (private)
Woodrow Wilson Memorial Bridge (PG Co.)
Woottons Mill Park
Zachary Taylor Nature Area
Zion Rd. Pond
stakeout Ash-throated Flycatcher, Montgomery County (2016)
stakeout Black-throated Gray Warbler, AU Park (2016-17)
stakeout Henslow's Sparrow, Brookeville (2013)
stakeout Mississippi Kite, Golden Meadows Rec Center (2018)
stakeout Prairie Falcon, Alexandria Power Plant (2017)
stakeout Shiny Cowbird, Bethesda (2017)
stakeout Snowy Owl, Springfield Mall (2014)
stakeout Summer Tanager, Gaithersburg (2015)
stakeout Swallow-tailed Kite, Bull Run Post Office Road (2017)
stakeout Swallow-tailed Kite, Legard Farm (2018)
stakeout Trumpeter Swan, Fairview Street Northwest (2018)
stakeout Varied Thrush, Bennett Farms Court (2010)
stakeout White-winged Dove, Monrovia (2011)