River MD DC PA VA WV

Potomac River

Maryland • 38.7500, -77.0667
Length
469 mi
755 km
Elevation
520′ → -2′
522 ft drop
Stream Order
8
Major River
Slope
0.02%
1.1 ft/mi
Drainage
14,158 mi²
36,669 km²
Avg Flow
11,498 cfs
2.8 mph velocity
Path to Mouth
371 mi
598 km to ocean
Classification
Tributary
Mid-reach
Elevation Profile
Data from USGS & NOAA for informational purposes only. More

Water Level Gauges on Potomac River

There are 8 USGS water level monitoring stations on Potomac River providing real-time flow and stage data.

Access Sites on Potomac River

There are 29 boat ramps, launches, and public access points on Potomac River.