River CO

South Boulder Canyon Ditch

Colorado • 40.0177, -105.0905

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

12 mi

19 km

Elevation

5,395′ → 5,212′

183 ft drop

Stream Order

Medium River

Slope

0.29%

15.2 ft/mi

Drainage

155 mi²

402 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

18 mi

29 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