List of Longest Rivers in The United States By State - Maryland

Maryland

1. Susquehanna River – 464 miles (747 km)
2. Potomac River – 302 miles (486 km)
3. Youghiogheny River – 134 miles (216 km)
4. Patuxent River – 115 miles (185 km)
5. North Branch Potomac River – 103 miles (166 km)
6. Conococheague Creek – 80 miles (130 km)
7. Choptank River – 71 miles (114 km)
8. Pocomoke River – 66 miles (106 km)
9. Nanticoke River – 64 miles (103 km)
10. Monocacy River – 58 miles (93 km)

• The Patuxent River is the longest river that is entirely within Maryland.

See also List of rivers of Maryland.