River CA

Middle Fork Cosumnes River

California • 38.5877, -120.5337

Hydrography profile Updated Jan 19, 2026

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USGS and NOAA data is for informational purposes. Source notes

Length

45 mi

72 km

Elevation

7,074′ → 790′

6,284 ft drop

Stream Order

Large River

Slope

2.67%

141.1 ft/mi

Drainage

200 mi²

518 km²

Avg Flow

319 cfs

2.1 mph velocity

Path to Mouth

137 mi

220 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

Rain Radar