USGS stream gauge 09421500 · Nevada

Colorado River below Hoover Dam, Az-nv, NV

As of Oct 28, 2026, 2:10 AM PDT, this gauge read a gage height of 40.90 ft. Over the past 7 days the water level rose 0.58 ft. Data from the USGS.

Updated Oct 28, 2026, 5:26 AM EDT (USGS Water Data snapshot)

Gage height

40.90 ft

7-day range 40.08–48.33 ft

Discharge

—

Latest reading

17 min ago

Oct 28, 2026, 2:10 AM PDT

Readings are provisional USGS data and may be revised. Rivers can rise fast after rain upstream. For flood warnings, check weather.gov and follow local authorities.

Gage height, past 7 days

39.4241.8144.2046.6048.99Oct 21Oct 22Oct 23Oct 24Oct 25Oct 26Oct 27
Gage height (ft), hourly, past 7 days. Low 40.08 · High 48.33.

Chart dates are in Nevada local time (America/Los Angeles).

Reading this gauge

Gage height is the water surface level above this station's own reference point, so 40.90 ft is not the river depth and cannot be compared with other gauges. Discharge, the volume of water flowing past each second, is the better number for comparing conditions over time and between rivers.

Station details
USGS site number09421500
Official nameCOLORADO RV BLW HOOVER DAM, AZ-NV
StateNevada
Drainage area171,700 sq mi
Gage datum elevation675.5 ft above sea level
Coordinates36.0153° N, 114.7386° W

Source: USGS Water Data for the Nation, site 09421500. Parameters 00065 (gage height) and 00060 (discharge).

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