MEDIAN FLOW RATE · 7 DAY
1cfs 10.9% vs avg
Optimal band: 1–1 cfs
PERIOD HIGH
2cfs
PERIOD LOW
1cfs
RUNNABLE
75%
last 7 day in band
Precipitation History
Precipitation · YTD
WetWetter than normal
2026 to date
15.3in
+20% vs normal
15.32 in of precipitation so far this year, 20% above the 30-year normal of 12.77 in for this point in the season.
YTD Total
15.3in
This year so far
Normal to Date
12.8in
30-yr average
Typical Range
5.4–20.8in
10th–90th pct YTD
Departure
+20%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 3.21" · normal 3.67" (0.7–7.7)
Feb: 5.10" · normal 3.85" (0.4–7.3)
Mar: 0.71" · normal 2.95" (0.4–6.2)
Apr: 5.58" · normal 1.44" (0.3–3.2)
May: 0.62" · normal 0.72" (0.0–1.4)
Jun: 0.09" · normal 0.13" (0.0–0.3)
Jul: 0.01" (so far)· normal 0.03" (0.0–0.0)
Aug: normal 0.06" (0.0–0.1)
Sep: normal 0.08" (0.0–0.2)
Oct: normal 0.84" (0.0–2.5)
Nov: normal 1.79" (0.6–3.5)
Dec: normal 3.27" (0.4–6.4)
Baseline 1991–2020 · Source: Open-Meteo04:17 PM
Your History · SAN LORENZO C A HAYWARD CA
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Station Location
37.6855, -122.0644Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC
Site #11181000·USGS
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