Rivermatics

USGS Streamgage 11274000

San Joaquin River near Newman, CA

San Joaquin River near Newman, CA is USGS streamgage 11274000 in California, monitoring river discharge in hydrologic subbasin 18040002. It sits on the San Joaquin River, alongside 10 other gauges Rivermatics tracks on the same river. It drains a watershed of about 9,520 square miles. Discharge records at this site go back to 1868. Typical flow runs near 374.5 cfs in July and 841.2 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

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Gauge details

State
California
Drainage area
9,520 sq mi
Gauge elevation
2 ft
Subbasin (HUC-8)
18040002
Coordinates
37.35047, -120.97711
USGS site number
11274000
Records begin
1868-01-02 (158 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for San Joaquin River near Newman, 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
167 182 198
155 184 222
150 187 250
146 189 279
143 190 298
140 192 329
139 194 353
136 194 360
131 193 365
123 189 334
118 186 319
118 191 344
118 195 362
118 195 367

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 83 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 366.9 819.6 5,486.5
February 387.4 983 6,844.5
March 349.9 1,089.5 8,428.1
April 297.1 841.2 12,140
May 250.9 782.1 10,706.5
June 162.9 547.2 7,377.7
July 127 374.5 2,123.9
August 126.5 380.5 1,028.4
September 116.1 408.9 1,282.7
October 134.1 487.2 1,509.4
November 204.5 536.3 1,133.7
December 240.3 612.4 1,755.8

All values in cubic feet per second (cfs).

Common questions

When does San Joaquin River near Newman, CA normally run highest?
March, on the long-term record. The median daily flow that month is about 1,089.5 cfs, against 374.5 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for San Joaquin River near Newman, CA?
It depends on the month. In January, half of days historically fall near 819.6 cfs, with the middle 80% of days between 366.9 and 5,486.5 cfs. The month-by-month table on this page gives the full range.
How long has San Joaquin River near Newman, CA been measured?
Discharge records at USGS site 11274000 begin in 1868, about 158 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 San Joaquin River near Newman, 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 San Joaquin River near Newman, CA?
The gauge sits at 37.35047, -120.97711, in California, in hydrologic subbasin 18040002, at an elevation of about 2 feet, draining roughly 9,520 square miles.
Can I use San Joaquin River near Newman, 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.

Upstream and downstream on the San Joaquin River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the San Joaquin River in full.

Other gauges in this subbasin