Creek IA

Threemile Creek

Iowa • 41.0911, -94.2274

Hydrography profile Updated Dec 26, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

34 mi

54 km

Elevation

1,258′ → 1,036′

223 ft drop

Stream Order

Medium River

Slope

0.13%

6.6 ft/mi

Drainage

99 mi²

257 km²

Avg Flow

19 cfs

0.9 mph velocity

Path to Mouth

2,147 mi

3,455 km to ocean

Classification

Headwater

Source Stream

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

Access Sites on Threemile Creek

There are 3 boat ramps, launches, and public access points on Threemile Creek.