Rivermatics

USGS Streamgage 11085000

San Gabriel River below Santa Fe Dam near Baldwin Pk, CA

San Gabriel River below Santa Fe Dam near Baldwin Pk, CA is USGS streamgage 11085000 in California, monitoring river discharge in hydrologic subbasin 18070106. It sits on the San Gabriel River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 236 square miles. Discharge records at this site go back to 1942. Typical flow runs near 0 cfs in July and 0 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.

View live conditions & forecast →

Gauge details

State
California
Drainage area
236 sq mi
Gauge elevation
402 ft
Subbasin (HUC-8)
18070106
Coordinates
34.11223, -117.96951
USGS site number
11085000
Records begin
1942-10-01 (84 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for San Gabriel River below Santa Fe Dam near Baldwin Pk, 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
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0

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 84 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 0 124.3
February 0 0 236
March 0 0 340.2
April 0 0 197
May 0 0 215.2
June 0 0 44.2
July 0 0 6.5
August 0 0 2.9
September 0 0 0
October 0 0 0
November 0 0 0
December 0 0 18.8

All values in cubic feet per second (cfs).

Common questions

When does San Gabriel River below Santa Fe Dam near Baldwin Pk, CA normally run highest?
January, on the long-term record. The median daily flow that month is about 0 cfs, against 0 cfs in January, 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 Gabriel River below Santa Fe Dam near Baldwin Pk, CA?
It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 124.3 cfs. The month-by-month table on this page gives the full range.
How long has San Gabriel River below Santa Fe Dam near Baldwin Pk, CA been measured?
Discharge records at USGS site 11085000 begin in 1942, about 84 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 Gabriel River below Santa Fe Dam near Baldwin Pk, 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 Gabriel River below Santa Fe Dam near Baldwin Pk, CA?
The gauge sits at 34.11223, -117.96951, in California, in hydrologic subbasin 18070106, at an elevation of about 402 feet, draining roughly 236 square miles.
Can I use San Gabriel River below Santa Fe Dam near Baldwin Pk, 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 Gabriel River

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

Other gauges in this subbasin