Brighton Dam Brighton Dam Howard 312 Sandy Spring
Broadford Dam Broadford Dam Garrett 2415 Deer Park
Browning Dam Browning Dam Garrett 2536 Sang Run
Conowingo Dam Conowingo Dam Cecil 82 Conowingo Dam
Goose Dam Goose Dam Dorchester 0 Taylors Island
Liberty Dam Liberty Dam Baltimore 413 Finksburg
Little Falls Dam Little Falls Dam Montgomery 39 Falls Church
Loch Raven Dam Loch Raven Dam Baltimore 230 Towson
Prettyboy Dam Prettyboy Dam Baltimore 522 Hereford
Savage River Dam Savage River Dam Garrett 1384 Bittinger
Starners Dam Starners Dam Frederick 358 Taneytown
Union Dam Union Dam Baltimore 171 Ellicott City
Lock Number 28 Lock Number 28 Frederick 236 Point of Rocks
Swains Lock Swains Lock Montgomery 174 Rockville
Prettyboy Dam Prettyboy Dam Baltimore 518 Hereford
Liberty Dam Liberty Dam Baltimore 351 Finksburg
Deep Creek Hydro-Electric Dam Deep Creek Hydro-Electric Dam Garrett 2461 Sang Run
Brighton Dam Brighton Dam Montgomery 351 Sandy Spring
Warners Gap Hollow Dam Warners Gap Hollow Dam Washington 1073 Smithsburg
Mdnoname1 Dam Mdnoname1 Dam Washington 886 Smithsburg
Greenbelt Dam Greenbelt Dam Prince George's 171 Beltsville
Big Piney Run Dam Big Piney Run Dam Garrett 2349 Avilton
Pleasant Valley Run Dam Pleasant Valley Run Dam Garrett 2575 Bittinger
Johnson Dam Johnson Dam Wicomico 7 Delmar
Herrington Creek Dam Herrington Creek Dam Garrett 2411 Oakland
Cash Creek Dam Cash Creek Dam Prince George's 151 Laurel
Powellvilles Dam Powellvilles Dam Wicomico 26 Wango
Fishing Creek Dam Fishing Creek Dam Frederick 666 Catoctin Furnace
Broad Creek Dam Broad Creek Dam Harford 239 Delta
Emmitsburg Dam Emmitsburg Dam Frederick 889 Blue Ridge Summit
Johns Hopkins University Dam Johns Hopkins University Dam Howard 364 Clarksville
Rocky Gorge Dam Rocky Gorge Dam Prince George's 430 Clarksville
Lake Linganore Dam Lake Linganore Dam Frederick 404 Walkersville
Little Falls Dam Little Falls Dam Montgomery 43 Falls Church
Morgan Creek Branch Dam Morgan Creek Branch Dam Kent 46 Betterton
Black and Decker Manufacturing Company Dam Black and Decker Manufacturing Company Dam Carroll 607 Littlestown
Shad Point Bridge Dam Shad Point Bridge Dam Wicomico 20 Salisbury
Cranberry Branch Dam Cranberry Branch Dam Carroll 469 Hedgesville
Saint Marys River Watershed Number 1 Dam Saint Marys River Watershed Number 1 Dam Allegany 59 Hollywood
Wye Mills Dam Wye Mills Dam Queen Anne's 30 Wye Mills
Bunting Branch Dam Bunting Branch Dam Worcester 52 Nanjemoy
Little Deer Creek Watershed Site Number 1 Dam Little Deer Creek Watershed Site Number 1 Dam Harford 643 Norrisville
Little Youghiogheny River Site Number 7 Dam Little Youghiogheny River Site Number 7 Dam Garrett 2487 Deer Park
Clear Spring Water Reservoir Dam Clear Spring Water Reservoir Dam Baltimore 164 Baltimore West
Trinity Church Dam Trinity Church Dam Charles 52 Charlotte Hall
Jameson Dam Jameson Dam Charles 138 Hughesville
Chesapeake Ranch Club Dam Chesapeake Ranch Club Dam Calvert 66 Solomons Island
Little Deer Creek Watershed Site Number 3 Dam Little Deer Creek Watershed Site Number 3 Dam Harford 640 Phoenix
Wheaton Regional Park Dam Wheaton Regional Park Dam Montgomery 384 Kensington
Green Brier State Park Dam and Dike Green Brier State Park Dam and Dike Washington 702 Funkstown
Greenbriar State Park Dike Dam Greenbriar State Park Dike Dam Washington 702 Funkstown
Little Youghiogheny Site Number 1 Dam Little Youghiogheny Site Number 1 Dam Garrett 2405 Oakland
Upper Rock Creek Watershed Site Number 5 Dam Upper Rock Creek Watershed Site Number 5 Dam Montgomery 397 Rockville
Unicorn Branch Dam Unicorn Branch Dam Queen Anne's 46 Millington
Smithville Lake Dam Smithville Lake Dam Caroline 49 Hobbs
Great Falls Estate Dam Great Falls Estate Dam Montgomery 272 Rockville
Upper Rock Creek Watershed Site Number 1 Dam Upper Rock Creek Watershed Site Number 1 Dam Montgomery 351 Kensington
Mason-Dixon Sand and Gravel Company of Pennsylvania Dam Mason-Dixon Sand and Gravel Company of Pennsylvania Dam Cecil 217 Havre De Grace
Lake Whetstone Dam Lake Whetstone Dam Montgomery 384 Gaithersburg
Lake Walker Dam Lake Walker Dam Montgomery 384 Gaithersburg
Nirvana Dam Nirvana Dam Montgomery 440 Rockville
Meadow Run Dam Meadow Run Dam Garrett 2621 Avilton
Hunting Creek Dam Hunting Creek Dam Frederick 1027 Blue Ridge Summit
Saefern Recreation Lake Dam Saefern Recreation Lake Dam Anne Arundel 36 Round Bay
Wheately Dam Wheately Dam Charles 121 Charlotte Hall
Blairs Valley Dam Blairs Valley Dam Washington 692 Clear Spring
Pinto Utilities Dam Pinto Utilities Dam Allegany 1073 Cresaptown
Stancills Inc Settling Pond Dam Stancills Inc Settling Pond Dam Cecil 33 Havre De Grace
Clinton Regional Park Dam Clinton Regional Park Dam Prince George's 128 Piscataway
Burba Lake Dam Burba Lake Dam Anne Arundel 128 Odenton
Soldier Lake Dam Soldier Lake Dam Anne Arundel 112 Odenton
Atkisson Dam Atkisson Dam Harford 102 Edgewood
Mezick Farm Pond Dam Mezick Farm Pond Dam Queen Anne's 33 Centreville
Lower Lake Royer Dam Lower Lake Royer Dam Washington 1312 Blue Ridge Summit
Rocky Gap Dam Rocky Gap Dam Allegany 1145 Evitts Creek
Meadowlake Dam Meadowlake Dam Frederick 312 Walkersville
Upper Pinehurst Dam Upper Pinehurst Dam Frederick 436 Walkersville
Nagels Mill Pond Dam Nagels Mill Pond Dam Caroline 30 Hobbs
Haul Road Dam Haul Road Dam Frederick 548 Walkersville
Octoraro Lakes Dam Octoraro Lakes Dam Cecil 138 Conowingo Dam
Barton Debris Basin Dam Barton Debris Basin Dam Garrett 1578 Barton
Potomac River Dam Number Four Potomac River Dam Number Four Washington 308 Shepherdstown
Big Millpond Dam Big Millpond Dam Worcester 3 Girdletree
Contee Main Settling Pond Dam Contee Main Settling Pond Dam Prince George's 256 Beltsville
Northampton Lake Dam Northampton Lake Dam Prince George's 98 Lanham
Edgewater Village Dam Edgewater Village Dam Harford 20 Edgewood
Urbana Dam Urbana Dam Frederick 387 Urbana
Parker Pond Dam Parker Pond Dam Wicomico 36 Salisbury
Rewastico Pond Dam Rewastico Pond Dam Wicomico 3 Mardela Springs
Pond Number 3 Dam Pond Number 3 Dam St. Mary's 23 Solomons Island
Churchill Town Sector Dam Churchill Town Sector Dam Montgomery 400 Germantown
Cypress Mill Pond Dam Cypress Mill Pond Dam Kent 10 Millington
Lake of the Pines Dam Lake of the Pines Dam Anne Arundel 89 Bowie
Shores of Clvert Dam Number One Shores of Clvert Dam Number One Calvert 39 Lower Marlboro
Don Pleasant Dam Don Pleasant Dam Allegany 902 Flintstone
Hancock Sewage Lagoon Dam Hancock Sewage Lagoon Dam Washington 417 Hancock
Frazers Lake Dam Frazers Lake Dam Cecil 7 Earleville
Fairlee Lake Dam Fairlee Lake Dam Kent 13 Rock Hall
Saint Pauls Millpond Dam Saint Pauls Millpond Dam Kent 3 Rock Hall
Priestford Hills Dam Priestford Hills Dam Harford 276 Bel Air
New Germany State Park Dam New Germany State Park Dam Garrett 2470 Avilton
Lake Bonnie Dam Lake Bonnie Dam Caroline 23 Goldsboro
Pikesville Reservoir Dam Pikesville Reservoir Dam Baltimore 538 Cockeysville
Soil Conservation Service Lake Dam Soil Conservation Service Lake Dam Prince George's 105 Laurel
Redington Lake Dam Redington Lake Dam Prince George's 115 Laurel
Williston Mill Dam Williston Mill Dam Caroline 36 Hobbs
Lake Louise Dam Lake Louise Dam Garrett 2556 Grantsville
Mason Dixon Original Settling Pond Dam Mason Dixon Original Settling Pond Dam Cecil 249 Havre De Grace
North Creek Dam North Creek Dam Montgomery 446 Gaithersburg
Williamsport Power Plant Dam Williamsport Power Plant Dam Washington 328 Williamsport
Broadford Mountain Lake Dam Broadford Mountain Lake Dam Garrett 2402 Deer Park
Baron Pond Dam Baron Pond Dam Wicomico 10 Hebron
Lake Jennifer Dam Lake Jennifer Dam Frederick 554 Libertytown
Allentown Pond Dam Allentown Pond Dam Wicomico 3 Eden
Galestown Millpond Dam Galestown Millpond Dam Dorchester 7 Sharptown
Lake Elkhorn Dam Lake Elkhorn Dam Howard 295 Savage
Higgins Millpond Dam Higgins Millpond Dam Dorchester 0 East New Market
Smithville Lake Dam Smithville Lake Dam Caroline 36 Hickman
Allen Pond Dam Allen Pond Dam Prince George's 108 Bowie
Saint Clair Farm Pond Dam Saint Clair Farm Pond Dam Frederick 584 Damascus
Rising Sun Waste Water Lagoon Dam Rising Sun Waste Water Lagoon Dam Cecil 259 Rising Sun
Beaglin Park Dam Beaglin Park Dam Wicomico 10 Salisbury
Hurlock Oxidation Ponds Dam Hurlock Oxidation Ponds Dam Dorchester 36 Rhodesdale
Annapolis Reservoir Dam Annapolis Reservoir Dam Anne Arundel 20 South River
Damiels Dam Damiels Dam Baltimore 220 Ellicott City
Maryland Noname 3 Dam Maryland Noname 3 Dam Dorchester 13 Preston
Potomac River Dam Number 3 Potomac River Dam Number 3 Washington 266 Charles Town
Little Falls Dam Little Falls Dam Montgomery 249 Washington West
Piney Run Dam Piney Run Dam Carroll 646 Finksburg
Court House Point Disposal Area Dam Court House Point Disposal Area Dam Cecil 39 North East
Pearce Creek Disposal Area Dam Pearce Creek Disposal Area Dam Cecil 39 Earleville
Grove Point Disposal Area Dam Grove Point Disposal Area Dam Cecil 10 Spesutie
Disposal Area 18 Dam Disposal Area 18 Dam Cecil 49 Elkton
Disposal Area Number 19 Dam Disposal Area Number 19 Dam Cecil 43 Elkton
Disposal Area Number 21 Dam Disposal Area Number 21 Dam Cecil 39 Elkton
Pond Number Three Dam Pond Number Three Dam St. Mary's 23 Solomons Island
Lake Kittamaqundi Dam Lake Kittamaqundi Dam Howard 371 Savage
Bloede Dam Bloede Dam Baltimore 59 Savage
Tuckahoe State Park Dam Tuckahoe State Park Dam Caroline 10 Ridgely
Heritage Harbour Site One Dam Heritage Harbour Site One Dam Anne Arundel 102 South River
Lake Waterford Dam Lake Waterford Dam Anne Arundel 26 Round Bay
Lake Lanahen Dam Lake Lanahen Dam Washington 505 Bellegrove
Lake Jenkins Dam Lake Jenkins Dam Washington 482 Bellegrove
McComas Dam McComas Dam Garrett 2395 Oakland
Union Dam Union Dam Baltimore 197 Ellicott City
Leonard Pond Dam Leonard Pond Dam Wicomico 26 Delmar
Upper Lake Royer Dam Upper Lake Royer Dam Washington 1316 Blue Ridge Summit
Bohemia Mills Dam Bohemia Mills Dam Cecil 23 Cecilton
Paul Roeder Farm Pond Dam Paul Roeder Farm Pond Dam Allegany 558 Oldtown
Chestertown Stabilization Pond Number 1 Dam Chestertown Stabilization Pond Number 1 Dam Kent 16 Chestertown
Chestertown Stablization Pond Number Two Dam Chestertown Stablization Pond Number Two Dam Kent 33 Chestertown
Bittinger Farm Pond Dam Bittinger Farm Pond Dam Garrett 2621 Avilton
Damazo Pond Dam Damazo Pond Dam Frederick 535 Harpers Ferry
Bond Farm Pond Dam Bond Farm Pond Dam Frederick 1027 Myersville
Riggs Farm Pond Dam Riggs Farm Pond Dam Howard 453 Woodbine
Black and Decker Manufacturing Company Dam Black and Decker Manufacturing Company Dam Carroll 771 Hampstead
Black and Decker Stormwater Pond Dam Black and Decker Stormwater Pond Dam Carroll 804 Hampstead
Jones Lake Dam Jones Lake Dam Queen Anne's 13 Sudlersville
McAllister Pond Number One Dam McAllister Pond Number One Dam Charles 79 La Plata
Rock Ridge Pond Dam Rock Ridge Pond Dam Harford 413 Delta
Campus Hills Pond Dam Campus Hills Pond Dam Harford 400 Bel Air
Boyd Farm Pond Dam Boyd Farm Pond Dam Talbot 39 Wye Mills
Owings Farm Pond Dam Owings Farm Pond Dam Queen Anne's 36 Chestertown
Watts Farm Pond Dam Watts Farm Pond Dam Kent 59 Betterton
Elgin Farm Pond Dam Elgin Farm Pond Dam Kent 46 Betterton
Talbot Country Club Pond Dam Talbot Country Club Pond Dam Talbot 7 Trappe
Carpenter Farm Pond Dam Carpenter Farm Pond Dam Kent 3 Rock Hall
Scull Farm Pond Dam Scull Farm Pond Dam Caroline 16 Fowling Creek
Ledford Farm Pond Dam Ledford Farm Pond Dam St. Mary's 102 Leonardtown
Panagopulos Farm Pond Dam Panagopulos Farm Pond Dam Cecil 30 Earleville
Myrtle Grove Lake Dam Myrtle Grove Lake Dam Charles 56 Port Tobacco
Easton Primary Sewage Lagoon Dam Easton Primary Sewage Lagoon Dam Talbot 36 Trappe
Easton Secondary Sewage Lagoon Dam Easton Secondary Sewage Lagoon Dam Talbot 36 Trappe
Gordon Farm Pond Dam Gordon Farm Pond Dam Calvert 98 Prince Frederick
Bowens Farm Pond Dam Bowens Farm Pond Dam Calvert 85 Prince Frederick
Oliver Co Dam Oliver Co Dam Washington 774 Clear Spring
Foreman Branch Dam Foreman Branch Dam Queen Anne's 538 Clarksville
Riley Mill Pond Dam Riley Mill Pond Dam Kent 7 Millington
Back Creek Dam Back Creek Dam Cecil 0 Elkton
Briar Ridge Farm Pond Dam Briar Ridge Farm Pond Dam Harford 646 Phoenix
Inspiration Lake Dam Inspiration Lake Dam Montgomery 374 Rockville
Lake Placid Dam Lake Placid Dam Montgomery 341 Rockville
Kemp Farm Pond Dam Kemp Farm Pond Dam Garrett 1831 Friendsville
Pocomoke City Sewage Lagoon Number One Dam Pocomoke City Sewage Lagoon Number One Dam Worcester 20 Pocomoke City
Pocomoke City Sewage Lagoon Number Two Dam Pocomoke City Sewage Lagoon Number Two Dam Worcester 26 Pocomoke City
Forks Pond Dam Forks Pond Dam Wicomico 23 Salisbury
Morris Mill Pond Dam Morris Mill Pond Dam Wicomico 20 Salisbury
Lake Walker-Pond Number Two Dam Lake Walker-Pond Number Two Dam Montgomery 387 Gaithersburg
Columbia Lng Secondary Dam Columbia Lng Secondary Dam Calvert 82 Cove Point
Mason-Dixon Settling Pond Number One Dam Mason-Dixon Settling Pond Number One Dam Cecil 322 Havre De Grace
Mason-Dixon Settling Pond Number Two Dam Mason-Dixon Settling Pond Number Two Dam Cecil 325 Havre De Grace
Mason-Dixon Settling Pond Number Three Dam Mason-Dixon Settling Pond Number Three Dam Cecil 325 Havre De Grace
Mason-Dixon Settling Pond Number Four Dam Mason-Dixon Settling Pond Number Four Dam Cecil 344 Havre De Grace
Mason-Dixon Settling Pond Number Five Dam Mason-Dixon Settling Pond Number Five Dam Cecil 344 Havre De Grace
Mason-Dixon Settling Pond Number Six Dam Mason-Dixon Settling Pond Number Six Dam Cecil 367 Havre De Grace
Cranberry Branch Dam Cranberry Branch Dam Carroll 692 Westminster
County Home Farm Pond Dam County Home Farm Pond Dam Carroll 745 Westminster
Cascade Lake Dam Cascade Lake Dam Carroll 722 Westminster
Little Youghiogheny River Site Number 2 Dam Little Youghiogheny River Site Number 2 Dam Garrett 2507 Oakland
Little Youghiogheny River Site Number 5 Dam Little Youghiogheny River Site Number 5 Dam Garrett 2411 Oakland
Maple Dam (historical) Maple Dam (historical) Dorchester 0 Cambridge
Pecks Branch Dam Pecks Branch Dam Baltimore (city) 364 Baltimore West
Lake Roland Dam Lake Roland Dam Baltimore 223 Cockeysville
Guilford Reservoir Dam Guilford Reservoir Dam Baltimore (city) 348 Baltimore East
Lake Montebello Dam Lake Montebello Dam Baltimore (city) 171 Baltimore East
Lake Ashburton Dam Lake Ashburton Dam Baltimore (city) 335 Baltimore West
Druid Hill Lake Dam Druid Hill Lake Dam Baltimore (city) 135 Baltimore West
Montebello Waste Water Lake Dam Montebello Waste Water Lake Dam Baltimore (city) 187 Baltimore East
Savage Dam Savage Dam Howard 171 Savage
Lock Number 29 Lock Number 29 Frederick 233 Point of Rocks
Lock 30 Lock 30 Frederick 243 Harpers Ferry
Lock 26 Lock 26 Montgomery 210 Poolesville
Lock 25 Lock 25 Montgomery 203 Sterling
Lock 22 Lock 22 Montgomery 180 Seneca
Lock 23 Lock 23 Montgomery 194 Seneca
Lock 24 Lock 24 Montgomery 190 Seneca
Lock 15 Lock 15 Montgomery 128 Falls Church
Lock 16 Lock 16 Montgomery 135 Falls Church
Lock 17 Lock 17 Montgomery 138 Falls Church
Lock 18 Lock 18 Montgomery 144 Falls Church
Lock 19 Lock 19 Montgomery 154 Falls Church
Lock 5 Lock 5 Montgomery 46 Washington West
Lock 7 Lock 7 Montgomery 62 Falls Church
Lock 8 Lock 8 Montgomery 69 Falls Church
Lock 9 Lock 9 Montgomery 66 Falls Church
Lock 10 Lock 10 Montgomery 75 Falls Church
Lock 11 Lock 11 Montgomery 92 Falls Church
Lock 12 Lock 12 Montgomery 98 Falls Church
Lock 13 Lock 13 Montgomery 108 Falls Church
Lock 14 Lock 14 Montgomery 115 Falls Church
Lock 6 Lock 6 Montgomery 52 Washington West
Guard Lock Number 8 Guard Lock Number 8 Allegany 614 Cumberland
Lock 57 Lock 57 Allegany 443 Bellegrove
Lock 72 Lock 72 Allegany 574 Patterson Creek
Lock 73 Lock 73 Allegany 581 Patterson Creek
Lock 74 Lock 74 Allegany 574 Patterson Creek
Lock 58 Lock 58 Allegany 505 Paw Paw
Lock 59 Lock 59 Allegany 466 Paw Paw
Lock 60 Lock 60 Allegany 466 Paw Paw
Lock 61 Lock 61 Allegany 459 Paw Paw
Lock 67 Lock 67 Allegany 535 Oldtown
Lock 68 Lock 68 Allegany 545 Oldtown
Lock 69 Lock 69 Allegany 541 Oldtown
Lock 70 Lock 70 Allegany 568 Oldtown
Lock 71 Lock 71 Allegany 568 Oldtown
Lock 51 Lock 51 Washington 407 Hancock
Lock 52 Lock 52 Washington 397 Hancock
Lock 53 Lock 53 Washington 423 Hancock
Lock 55 Lock 55 Washington 443 Bellegrove
Lock 56 Lock 56 Washington 443 Bellegrove
Dam Number 5 Dam Number 5 Washington 348 Hedgesville
Guard Lock Number 5 Guard Lock Number 5 Washington 338 Williamsport
Guard Lock Number 5 Guard Lock Number 5 Washington 348 Hedgesville
Lock Number 45 Lock Number 45 Washington 367 Hedgesville
Lock 45 Lock 45 Washington 331 Williamsport
Lock Number 46 Lock Number 46 Washington 364 Hedgesville
Lock Number 47 Lock Number 47 Washington 377 Hedgesville
Lock Number 48 Lock Number 48 Washington 381 Hedgesville
Lock Number 49 Lock Number 49 Washington 397 Hedgesville
Lock Number 50 Lock Number 50 Washington 407 Hedgesville
Lock 54 Lock 54 Washington 430 Great Cacapon
Dam Number 3 Dam Number 3 Washington 266 Charles Town
Dam Number 4 Dam Number 4 Washington 308 Shepherdstown
Lock 31 Lock 31 Washington 253 Harpers Ferry
Lock 32 Lock 32 Washington 249 Harpers Ferry
Lock 33 Lock 33 Washington 256 Harpers Ferry
Lock 34 Lock 34 Washington 269 Harpers Ferry
Lock Number 35 Lock Number 35 Washington 282 Charles Town
Lock Number 36 Lock Number 36 Washington 292 Charles Town
Lock 37 Lock 37 Washington 292 Keedysville
Lock 38 Lock 38 Washington 308 Shepherdstown
Lock 39 Lock 39 Washington 299 Shepherdstown
Lock 40 Lock 40 Washington 318 Shepherdstown
Piedmont Dam Piedmont Dam Garrett 1257 Barton
Piedmon Dam Piedmon Dam Garrett 1260 Barton