Rivermatics

USGS Streamgage 09522000

Colorado River at Nib, above Morelos Dam, AZ

Colorado River at Nib, above Morelos Dam, AZ is USGS streamgage 09522000 in Arizona, monitoring river discharge in hydrologic subbasin 15030108. It drains a watershed of about 246,700 square miles. Discharge records at this site go back to 1950. Typical flow runs near 2,629 cfs in July and 3,252 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Arizona
Drainage area
246,700 sq mi
Gauge elevation
119 ft
Subbasin (HUC-8)
15030108
Coordinates
32.71866, -114.71884
USGS site number
09522000
Records begin
1950-01-01 (76 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 77 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 1,039.5 1,978.1 13,248.4
February 1,374.4 2,426.6 11,965.5
March 2,379 3,094.8 10,638.4
April 2,456.7 3,252 9,721
May 1,289.4 1,812.9 9,270
June 1,586 2,145.7 5,992.7
July 1,733.9 2,629 6,648.7
August 1,379.7 2,439.4 7,412.6
September 1,266.7 1,520 6,996.3
October 728.2 1,018.8 5,471.9
November 758.3 1,394.3 6,812.3
December 1,036.2 1,749 10,149.7

All values in cubic feet per second (cfs).

Common questions

When does Colorado River at Nib, above Morelos Dam, AZ normally run highest?
April, on the long-term record. The median daily flow that month is about 3,252 cfs, against 1,018.8 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Colorado River at Nib, above Morelos Dam, AZ?
It depends on the month. In January, half of days historically fall near 1,978.1 cfs, with the middle 80% of days between 1,039.5 and 13,248.4 cfs. The month-by-month table on this page gives the full range.
How long has Colorado River at Nib, above Morelos Dam, AZ been measured?
Discharge records at USGS site 09522000 begin in 1950, about 76 years, covering roughly 9,094 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Colorado River at Nib, above Morelos Dam, AZ?
The gauge sits at 32.71866, -114.71884, in Arizona, in hydrologic subbasin 15030108, at an elevation of about 119 feet, draining roughly 246,700 square miles.
Can I use Colorado River at Nib, above Morelos Dam, AZ data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Other gauges in this subbasin