River MD

Western Branch Saint Marys River

Maryland • 38.2686, -76.5507

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

7 mi

12 km

Elevation

120′ → 15′

105 ft drop

Stream Order

Stream

Slope

0.27%

14.2 ft/mi

Drainage

11 mi²

28 km²

Avg Flow

-- cfs

0.7 mph velocity

Path to Mouth

114 mi

184 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

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Data from USGS & NOAA for informational purposes only. Read source and safety notes

Rain Radar