Rivermatics

USGS Streamgage 11169800

Coyote C near Gilroy, CA

Coyote C near Gilroy, CA is USGS streamgage 11169800 in California, monitoring river discharge in hydrologic subbasin 18050003. It drains a watershed of about 109 square miles. Discharge records at this site go back to 1960. Typical flow runs near 0.3 cfs in July and 13.7 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
California
Drainage area
109 sq mi
Gauge elevation
790 ft
Subbasin (HUC-8)
18050003
Coordinates
37.07769, -121.49434
USGS site number
11169800
Records begin
1960-10-01 (66 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 66 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 0.4 11.4 485.1
February 2.1 18.7 474.2
March 2.4 27.6 320.7
April 1.3 13.7 164.1
May 0.6 3.7 24.5
June 0.2 1 7.3
July 0 0.3 1.6
August 0 0 0.4
September 0 0 0.1
October 0 0 0
November 0 0 6.6
December 0 2.2 120.4

All values in cubic feet per second (cfs).

Common questions

When does Coyote C near Gilroy, CA normally run highest?
March, on the long-term record. The median daily flow that month is about 27.6 cfs, against 0 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Coyote C near Gilroy, CA?
It depends on the month. In January, half of days historically fall near 11.4 cfs, with the middle 80% of days between 0.4 and 485.1 cfs. The month-by-month table on this page gives the full range.
How long has Coyote C near Gilroy, CA been measured?
Discharge records at USGS site 11169800 begin in 1960, about 66 years, covering roughly 7,975 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Coyote C near Gilroy, CA?
The gauge sits at 37.07769, -121.49434, in California, in hydrologic subbasin 18050003, at an elevation of about 790 feet, draining roughly 109 square miles.
Can I use Coyote C near Gilroy, 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