River CO

Thompson Arroyo

Colorado • 37.9458, -103.4520

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

9 mi

14 km

Elevation

4,454′ → 4,030′

423 ft drop

Stream Order

Medium River

Slope

0.93%

49.1 ft/mi

Drainage

9,256 mi²

23,973 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

1,129 mi

1,816 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