River IA

Monona Harrison Ditch

Iowa • 41.9558, -95.9882

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

1 mi

2 km

Elevation

1,023′ → 1,021′

2 ft drop

Stream Order

Large River

Slope

0.04%

2.4 ft/mi

Drainage

838 mi²

2,171 km²

Avg Flow

-- cfs

1.4 mph velocity

Path to Mouth

2,782 mi

4,477 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