River MD

Downey Branch

Maryland • 39.5449, -77.8068

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

3 mi

5 km

Elevation

486′ → 320′

166 ft drop

Stream Order

Headwater

Slope

0.94%

49.5 ft/mi

Drainage

3 mi²

9 km²

Avg Flow

-- cfs

0.5 mph velocity

Path to Mouth

289 mi

465 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