Rivermatics

USGS Streamgage 11230500

Bear C near Lake Thomas A Edison, CA

Bear C near Lake Thomas A Edison, CA is USGS streamgage 11230500 in California, monitoring river discharge in hydrologic subbasin 18040006. It drains a watershed of about 53 square miles. Discharge records at this site go back to 1921. Typical flow runs near 131 cfs in July and 79 cfs in April, with the higher of the two arriving in July.

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Gauge details

State
California
Drainage area
53 sq mi
Gauge elevation
7,367 ft
Subbasin (HUC-8)
18040006
Coordinates
37.33939, -118.97345
USGS site number
11230500
Records begin
1921-10-01 (105 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 104 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 6.7 18.5 43.4
February 9.9 22.5 38.6
March 16.8 31.7 55.9
April 36.5 79 161.5
May 99 233.6 452.1
June 103.5 308.8 632.4
July 33.3 131 480.6
August 13 37.2 151.9
September 4.8 14.1 52.9
October 4 10.1 32.2
November 5.1 11.6 31.1
December 5.7 14.6 36.8

All values in cubic feet per second (cfs).

Common questions

When does Bear C near Lake Thomas A Edison, CA normally run highest?
June, on the long-term record. The median daily flow that month is about 308.8 cfs, against 10.1 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 Bear C near Lake Thomas A Edison, CA?
It depends on the month. In January, half of days historically fall near 18.5 cfs, with the middle 80% of days between 6.7 and 43.4 cfs. The month-by-month table on this page gives the full range.
How long has Bear C near Lake Thomas A Edison, CA been measured?
Discharge records at USGS site 11230500 begin in 1921, about 105 years, covering roughly 8,821 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Bear C near Lake Thomas A Edison, CA?
The gauge sits at 37.33939, -118.97345, in California, in hydrologic subbasin 18040006, at an elevation of about 7,367 feet, draining roughly 53 square miles.
Can I use Bear C near Lake Thomas A Edison, 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