Waterlands
Matanzas C A Santa Rosa Ca River
USGS · 11466170
MATANZAS C A SANTA ROSA CA RIVER
USGS · 11466170LIVE

MATANZAS C A SANTA ROSA CA

SANTA ROSA, CA38.4388°N, -122.7024°W Updated 62 d ago
FLOW RATE
3cfs
AIR TEMP
54°F
WIND
3mph NE
FISH INDEX
81SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
3cfs 14.1% vs avg
Optimal band: 35 cfs
PERIOD HIGH
401cfs
PERIOD LOW
1cfs
RUNNABLE
27%
last 1 year in band
Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

14.2in

-27% vs normal

14.15 in of precipitation so far this year, 27% below the 30-year normal of 19.31 in for this point in the season.

YTD Total

14.2in

This year so far

Normal to Date

19.3in

30-yr average

Typical Range

8.7–33.6in

10th–90th pct YTD

Departure

-27%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 3.83" · normal 5.71" (0.5–11.7)
Jan
Feb: 4.82" · normal 5.84" (0.3–12.0)
Feb
Mar: 0.30" · normal 4.44" (0.5–10.1)
Mar
Apr: 4.33" · normal 1.94" (0.6–3.6)
Apr
May: 0.88" · normal 1.10" (0.0–2.9)
May
Jun: 0.00" · normal 0.27" (0.0–0.8)
Jun
Jul: 0.00" (so far)· normal 0.01" (0.0–0.0)
Jul
Aug: normal 0.04" (0.0–0.1)
Aug
Sep: normal 0.13" (0.0–0.3)
Sep
Oct: normal 1.34" (0.1–3.2)
Oct
Nov: normal 3.00" (0.7–6.3)
Nov
Dec: normal 5.91" (0.4–11.9)
Dec
Baseline 19912020 · Source: Open-Meteo06:12 AM
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Weather Conditions
WEATHER CONDITIONS
TODAY
80°
46°
THU
78°
49°
FRI
80°
50°
SAT
87°
56°
SUN
84°
54°
MON
82°
53°
TUE
88°
56°
TIME
THU
6
NOW
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
FRI
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SAT
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SUN
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
MON
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
TEMP
hourly forecast
49°
cool
49°
52°
55°
58°
63°
68°
74°
78°
78°
76°
73°
72°
69°
66°
62°
58°
56°
55°
53°
52°
51°
50°
50°
51°
51°
51°
55°
60°
67°
73°
77°
80°
79°
78°
79°
80°
78°
75°
72°
67°
65°
63°
62°
60°
59°
58°
58°
57°
56°
58°
62°
68°
73°
79°
84°
87°
87°
83°
82°
80°
77°
74°
70°
65°
62°
59°
58°
57°
56°
55°
55°
55°
54°
55°
59°
64°
70°
76°
81°
84°
82°
79°
79°
78°
75°
72°
67°
62°
59°
57°
56°
55°
55°
54°
54°
54°
53°
55°
58°
64°
69°
75°
80°
82°
79°
78°
80°
78°
76°
73°
69°
66°
62°
WIND
mph · gust · dir
0mph E
G 2 mph
0
G2
E
1
G3
S
3
G5
W
4
WSW
4
G5
WSW
5
W
5
WSW
8
G9
WSW
10
G12
WSW
11
G13
WSW
10
G11
WSW
8
G10
WSW
9
G12
SW
8
G11
SW
6
G9
SW
5
G7
SW
3
G6
SW
2
G6
SSW
1
G6
SW
1
G5
N
1
G3
N
1
N
1
N
1
G2
W
1
WSW
1
SSW
2
WSW
3
WSW
5
WSW
5
G6
WSW
7
SW
9
G10
WSW
10
G12
WSW
10
G12
WSW
8
G9
SW
7
G9
SW
6
G8
SW
5
G7
SSW
4
G6
SSW
3
G4
SSW
3
SSW
2
SW
2
SW
2
SSW
2
SSW
2
S
1
S
1
G2
SSW
1
SW
1
WSW
2
SW
3
SW
3
SW
4
SW
5
SW
7
SW
11
SW
7
G8
SW
7
G8
SW
7
G9
SW
6
G9
SW
5
G7
SSW
5
G7
SSW
3
G5
SSW
3
SSW
3
G4
SSW
2
G4
SW
2
SW
2
G3
WSW
2
G3
WSW
1
G3
W
2
G3
WSW
2
WSW
2
G3
WNW
3
W
3
WSW
3
SW
3
G4
SW
4
G5
SW
9
WSW
12
SW
7
SW
7
SW
6
G9
SW
6
G9
SSW
6
G8
SSW
5
G7
SSW
4
G6
SSW
4
G5
SSW
3
G4
SSW
3
G4
SSW
3
G4
SSW
3
SSW
3
SSW
2
G3
S
2
SSW
1
SW
1
WSW
2
W
2
WSW
3
SW
4
SW
5
SW
10
SW
11
SW
7
G8
SW
7
G8
SSW
7
SSW
6
G8
S
6
G8
S
5
G7
S
4
G6
S
3
G4
S
PRECIP
chance %
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%
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%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
CLOUDS
cover %
100%
overcast
100%
100%
100%
100%
56%
3%
1%
0%
0%
0%
39%
22%
5%
1%
2%
3%
5%
5%
6%
9%
14%
34%
87%
100%
100%
100%
76%
26%
3%
1%
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%
5%
0%
5%
6%
5%
0%
5%
0%
5%
5%
100%
100%
6%
6%
66%
74%
100%
100%
5%
62%
100%
100%
100%
100%
100%
100%
100%
100%
75%
66%
16%
29%
34%
37%
32%
33%
35%
19%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
PRESSURE
hPa · trend
1005
1005100710061007100710081006100810081007100610081007100610051007100710061005
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
81
Temperature
Ideal
Wind
Calm
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:50 AM
SUNSET
08:38 PM
14H 48M OF DAYLIGHT14H 24M REMAINING
MOON PHASE
Waning Gibbous
94% illuminated

Station Location

38.4388, -122.7024
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-02 06:14 UTC
Site #11466170·USGS

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