River IA

Spoon River

Iowa • 40.6320, -90.2629

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

147 mi

237 km

Elevation

659′ → 439′

221 ft drop

Stream Order

Large River

Slope

0.03%

1.5 ft/mi

Drainage

1,829 mi²

4,736 km²

Avg Flow

-- cfs

1.8 mph velocity

Path to Mouth

1,465 mi

2,358 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