MEDIAN FLOW RATE · 1 DAY
45.9cfs 50.2% vs avg
Optimal band: 41–55 cfs
PERIOD HIGH
50.2cfs
PERIOD LOW
43.9cfs
RUNNABLE
100%
last 1 day in band
Gauge Height
11.41ft
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
26.1in
-18% vs normal
26.14 in of precipitation so far this year, 18% below the 30-year normal of 31.93 in for this point in the season.
YTD Total
26.1in
This year so far
Normal to Date
31.9in
30-yr average
Typical Range
20.2–55.6in
10th–90th pct YTD
Departure
-18%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 8.65" · normal 9.36" (1.5–16.4)
Feb: 10.43" · normal 8.20" (1.5–15.5)
Mar: 0.47" · normal 7.52" (2.8–14.1)
Apr: 5.26" · normal 4.06" (1.8–7.2)
May: 0.59" · normal 2.09" (0.4–5.6)
Jun: 0.74" · normal 0.71" (0.0–1.5)
Jul: 0.00" (so far)· normal 0.07" (0.0–0.2)
Aug: normal 0.09" (0.0–0.2)
Sep: normal 0.50" (0.0–1.4)
Oct: normal 3.03" (0.2–5.8)
Nov: normal 6.23" (1.9–10.7)
Dec: normal 10.67" (2.5–18.9)
Baseline 1991–2020 · Source: Open-Meteo06:06 AM
Your History · MATTOLE R NR PETROLIA CA
Track your history
Sign in to track your sessions at MATTOLE R NR PETROLIA CA — best days, monthly trends, and time on the water.
Sign inSPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
74°
52°
THU
78°
56°
FRI
79°
53°
SAT
86°
54°
SUN
79°
54°
MON
80°
52°
TUE
78°
50°
FISH INDEX
Temperature
Ideal
Wind
Moderate
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:51 AM
SUNSET
08:50 PM
14H 59M OF DAYLIGHT14H 44M REMAINING
MOON PHASE
Waning Gibbous
94% illuminated
Station Location
40.3132, -124.2834Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-02 06:06 UTC
Site #11469000·USGS
Create a free account to save favorites, set flow alerts, and track conditions
