Geography Tool Shed : Potomac River

United States Rivers

States	District of Columbia (12 mi), Maryland (292 mi), Virginia (188 mi), West Virginia (116 mi)
Length	304.3 miles
Watershed Length^*	3,803 miles
Mouth	Chesapeake Bay ⤏ Atlantic Ocean
GNIS	597915

Tributaries

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Name	Distance from Mouth (miles)	Length (miles)	Watershed Length (miles)
Accotink Creek	107	28	43
Anacostia River	123	9	34
Antietam Creek	197	42	90
Aquia Creek	83	29	29
Back Creek	244	60	92
Broad Run	156	19	19
Cacapon River	266	81	201
Catoctin Creek	179	30	30
Catoctin Creek	176	14	47
Conococheague Creek	228	80	172
Difficult Run	140	16	16
Fifteenmile Creek	273	20	20
Goose Creek	158	54	109
Lick Run	249	57	77
Little Cacapon River	299	25	25
Little Conococheague Creek	234	12	12
Little Monocacy River	169	10	10
Mattawoman Creek	97	31	31
Monocacy River	170	59	280
Neabsco Creek	100	17	17
Nomini Creek	39	17	17
Occoquan River	100	30	166
Opequon Creek	219	66	66
Piscataway Creek	113	20	20
Potomac Creek	81	18	33
Potomac River - North Branch	304	103	366
Potomac River - South Branch	304	139	357
Powells Creek	95	17	17
Quantico Creek	94	14	26
Rock Creek	127	33	33
Seneca Creek	150	7	42
Shenandoah River	188	57	693
Sideling Hill Creek	269	25	49
Sleepy Creek	251	44	74
St. Marys River	19	27	27
Tonoloway Creek	255	31	52
Town Creek	302	42	42
Upper Machodoc Creek	59	21	21
Wicomico River	46	20	42

— Watercourse ‐ ‐ ‐ Watershed

* Note: Watershed is mostly rivers/streams 15+ miles in length.

Data from United States Geological Survey