USGS · 11174000

SAN ANTONIO C NR SUNOL CA RIVER

USGS · 11174000LIVE

SAN ANTONIO C NR SUNOL CA

ALAMEDA COUNTY, CA37.5774°N, -121.8577°W Updated 17 hr ago

FLOW RATE

0cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

0cfs NaN% vs avg

Optimal band: 2–2 cfs

PERIOD HIGH

4cfs

PERIOD LOW

1cfs

RUNNABLE

20%

last 1 year in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

13.5in

≈ normal

13.47 in of precipitation so far this year — about average for this point in the season (normal 12.93 in).

YTD Total

13.5in

This year so far

Normal to Date

12.9in

30-yr average

Typical Range

5.8–21.9in

10th–90th pct YTD

Departure

+4%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 2.92" · normal 3.65" (0.8–7.6)

Jan

Feb: 4.59" · normal 3.76" (0.4–7.5)

Feb

Mar: 0.54" · normal 2.99" (0.5–5.8)

Mar

Apr: 4.79" · normal 1.55" (0.3–2.8)

Apr

May: 0.54" · normal 0.78" (0.1–1.5)

May

Jun: 0.10" · normal 0.18" (0.0–0.4)

Jun

Jul: 0.00" (so far)· normal 0.08" (0.0–0.1)

Jul

Aug: normal 0.11" (0.0–0.2)

Aug

Sep: normal 0.11" (0.0–0.3)

Sep

Oct: normal 0.90" (0.0–2.4)

Oct

Nov: normal 1.77" (0.4–3.4)

Nov

Dec: normal 3.27" (0.3–6.3)

Dec

Baseline 1991–2020 · Source: Open-Meteo05:17 PM

Your History · SAN ANTONIO C NR SUNOL CA

Track your history

Station Location

37.5774, -121.8577

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DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC

Site #11174000·USGS

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