Rivermatics

USGS Streamgage 09527000

Pilot Knob Powerplant and Wasteway near P.K., CA

Pilot Knob Powerplant and Wasteway near P.K., CA is USGS streamgage 09527000 in California, monitoring river discharge in hydrologic subbasin 15030107. Discharge records at this site go back to 1939. Typical flow runs near 1,443.9 cfs in July and 1,995.7 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
California
Gauge elevation
150 ft
Subbasin (HUC-8)
15030107
Coordinates
32.73755, -114.71634
USGS site number
09527000
Records begin
1939-04-26 (87 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 88 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 0 312.6 4,828.4
February 0 905.7 2,910
March 0 1,884.2 3,321.9
April 0 1,995.7 3,506
May 0 209.5 2,126.5
June 0 1,046.8 2,749.7
July 0 1,443.9 3,689.7
August 0 1,135.6 3,854.5
September 0 0 3,307
October 0 0 1,983.5
November 0 0 2,382.3
December 0 7.9 4,151.6

All values in cubic feet per second (cfs).

Common questions

When does Pilot Knob Powerplant and Wasteway near P.K., CA normally run highest?
April, on the long-term record. The median daily flow that month is about 1,995.7 cfs, against 0 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Pilot Knob Powerplant and Wasteway near P.K., CA?
It depends on the month. In January, half of days historically fall near 312.6 cfs, with the middle 80% of days between 0 and 4,828.4 cfs. The month-by-month table on this page gives the full range.
How long has Pilot Knob Powerplant and Wasteway near P.K., CA been measured?
Discharge records at USGS site 09527000 begin in 1939, about 87 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 Pilot Knob Powerplant and Wasteway near P.K., CA?
The gauge sits at 32.73755, -114.71634, in California, in hydrologic subbasin 15030107, at an elevation of about 150 feet.
Can I use Pilot Knob Powerplant and Wasteway near P.K., CA 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