River IA

East Fork Grand River

Iowa • 40.6643, -94.2186

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

78 mi

125 km

Elevation

1,261′ → 814′

447 ft drop

Stream Order

Large River

Slope

0.11%

5.7 ft/mi

Drainage

399 mi²

1,034 km²

Avg Flow

-- cfs

1.4 mph velocity

Path to Mouth

1,376 mi

2,215 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