Rivermatics

USGS Streamgage 11289500

Turlock Cn near La Grange, CA

Turlock Cn near La Grange, CA is USGS streamgage 11289500 in California, monitoring river discharge in hydrologic subbasin 18040009. Discharge records at this site go back to 1899. Typical flow runs near 1,430.3 cfs in July and 986.9 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
California
Gauge elevation
280 ft
Subbasin (HUC-8)
18040009
Coordinates
37.66574, -120.44099
USGS site number
11289500
Records begin
1899-07-01 (127 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Turlock Cn near La Grange, CA. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
656 891 1,056
516 879 1,155
407 779 1,053
386 745 1,031
335 742 1,066
292 733 1,075
321 761 1,130
281 739 1,113
200 683 1,056
227 696 1,067
143 656 1,042
87.1 747 1,188
117 752 1,202
118 679 1,109

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 127 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 9.1 320.2
February 0 18.4 478.6
March 3.4 396.7 1,156.6
April 234.8 986.9 1,733
May 461.2 1,286.8 1,823.9
June 615.2 1,454 1,908
July 453 1,430.3 2,094.5
August 180.2 1,252.6 1,840.6
September 35.9 740.1 1,338.7
October 0.2 204.5 890.4
November 0 2.8 475.6
December 0 7.1 419.3

All values in cubic feet per second (cfs).

Common questions

When does Turlock Cn near La Grange, CA normally run highest?
June, on the long-term record. The median daily flow that month is about 1,454 cfs, against 2.8 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Turlock Cn near La Grange, CA?
It depends on the month. In January, half of days historically fall near 9.1 cfs, with the middle 80% of days between 0 and 320.2 cfs. The month-by-month table on this page gives the full range.
How long has Turlock Cn near La Grange, CA been measured?
Discharge records at USGS site 11289500 begin in 1899, about 127 years, covering roughly 9,130 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Turlock Cn near La Grange, CA?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Turlock Cn near La Grange, CA?
The gauge sits at 37.66574, -120.44099, in California, in hydrologic subbasin 18040009, at an elevation of about 280 feet.
Can I use Turlock Cn near La Grange, 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