River WY

First Mesa Ditch

Wyoming • 41.0354, -107.5568

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

10 mi

16 km

Elevation

6,421′ → 6,371′

50 ft drop

Stream Order

Large River

Slope

0.09%

5.0 ft/mi

Drainage

1,003 mi²

2,599 km²

Avg Flow

-- cfs

1.8 mph velocity

Path to Mouth

2,485 mi

3,999 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