Stream MD

Old Man Run

Maryland • 39.2442, -78.4330

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

3 mi

5 km

Elevation

1,348′ → 806′

541 ft drop

Stream Order

Stream

Slope

3.05%

161.2 ft/mi

Drainage

5 mi²

13 km²

Avg Flow

-- cfs

0.7 mph velocity

Path to Mouth

394 mi

634 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