| Potomac River At Edwards Ferry Near Poolesville,Md |
| Potomac River At Hancock, MD |
| Potomac River At Point Of Rocks, MD |
| Powder Mill Run Near Lochearn, MD |
| Sallie Harris Creek Near Carmichael, MD |
| Sand Spring Run At Frostburg, MD |
| Savage River Below Savage River Dam Near Bloomington, MD |
| Savage River Near Avilton, MD |
| Savage River Near Barton, MD |
| Sawmill Creek At Glen Burnie, MD |
| Scotts Level Branch At Rockdale, MD |
| Seneca Creek At Dawsonville, MD |
| Sideling Hill Creek Near Bellegrove, MD |
| Sligo Creek Near Takoma Park, MD |
| Soper Branch At Hyattstown, MD |
| South Fork Jabez Branch At Millersville, MD |
| St Clement Creek Near Clements, MD |
| St Marys River At Great Mills, MD |
| Stony Run At Ridgemede Road At Baltimore, MD |
| Susquehanna River At Conowingo, MD |
| Swan Creek At Swan Creek, MD |
| Ten Mile Creek Near Boyds, MD |
| Ten Mile Creek Near Clarksburg, MD |
| Three Bridges Branch At Centreville, MD |
| Tonoloway Creek Near Hancock, MD |
| Town Creek Near Oldtown, MD |
| Tributary To Dead Run Tributary At Woodlawn, MD |
| Tuckahoe Creek Near Ruthsburg, MD |
| Turkey Branch Near Rockville, MD |
| Unicorn Branch Near Millington, MD |
| West Branch Herring Run At Idlewylde, MD |
| Western Branch At Upper Marlboro, MD |
| Western Run At Western Run, MD |
| Wheel Creek Near Abingdon, MD |
| Whitemarsh Run At White Marsh, MD |
| Whitemarsh Run Near Fullerton, MD |
| Wills Creek At Ellerslie, MD |
| Wills Creek Near Cumberland, MD |
| Winters Run Near Benson, MD |
| Youghiogheny River At Friendsville, MD |
| Youghiogheny River At Hoyes, MD |
| Youghiogheny River Near Oakland, MD |
| Zekiah Swamp Run Near Newtown, MD |
