Waterlands
Alameda C Flood Channel A Union City Ca River
USGS · 11180700
ALAMEDA C FLOOD CHANNEL A UNION CITY CA RIVER
USGS · 11180700LIVE

ALAMEDA C FLOOD CHANNEL A UNION CITY CA

UNION CITY, CA37.5858°N, -122.0483°W Updated 2 hr ago
FLOW RATE
8cfs
GAUGE HT
6.77ft
AIR TEMP
79°F
WIND
8mph NW
FISH INDEX
81SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 30 DAY
8cfs 3.9% vs avg
Optimal band: 913 cfs
PERIOD HIGH
15cfs
PERIOD LOW
6cfs
RUNNABLE
68%
last 30 day in band

Gauge Height

6.77ft
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

14.5in

≈ normal

14.49 in of precipitation so far this year — about average for this point in the season (normal 13.23 in).

YTD Total

14.5in

This year so far

Normal to Date

13.2in

30-yr average

Typical Range

6.0–21.6in

10th–90th pct YTD

Departure

+10%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 3.40" · normal 3.69" (0.8–7.7)
Jan
Feb: 4.88" · normal 3.85" (0.4–7.6)
Feb
Mar: 0.54" · normal 3.03" (0.5–5.9)
Mar
Apr: 5.01" · normal 1.69" (0.3–3.3)
Apr
May: 0.54" · normal 0.78" (0.0–1.6)
May
Jun: 0.11" · normal 0.16" (0.0–0.4)
Jun
Jul: 0.02" (so far)· normal 0.04" (0.0–0.1)
Jul
Aug: normal 0.04" (0.0–0.1)
Aug
Sep: normal 0.09" (0.0–0.2)
Sep
Oct: normal 0.91" (0.0–2.6)
Oct
Nov: normal 1.81" (0.5–3.3)
Nov
Dec: normal 3.35" (0.2–6.3)
Dec
Baseline 19912020 · Source: Open-Meteo23:57 UTC
Your History · ALAMEDA C FLOOD CHANNEL A UNION CITY CA

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Weather Conditions
WEATHER CONDITIONS
TODAY
84°
58°
MON
92°
63°
TUE
82°
65°
WED
86°
60°
THU
81°
60°
FRI
83°
57°
SAT
85°
60°
TIME
MON
2
NOW
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
TUE
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
WED
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
THU
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
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
TEMP
hourly forecast
65°
mild
65°
63°
63°
63°
63°
65°
68°
75°
79°
83°
83°
89°
92°
92°
91°
87°
83°
79°
75°
72°
71°
71°
71°
70°
69°
69°
67°
67°
65°
68°
71°
73°
75°
77°
80°
81°
77°
78°
81°
81°
82°
79°
74°
71°
69°
68°
66°
65°
64°
62°
61°
61°
60°
62°
65°
70°
74°
79°
83°
85°
86°
85°
84°
81°
78°
75°
72°
69°
67°
66°
64°
63°
62°
61°
61°
60°
60°
61°
64°
67°
72°
76°
80°
81°
81°
79°
78°
77°
76°
73°
69°
65°
63°
62°
61°
60°
59°
59°
59°
58°
57°
59°
62°
66°
72°
76°
79°
82°
83°
83°
82°
80°
77°
WIND
mph · gust · dir
3mph S
3
S
2
G3
SW
1
WNW
3
WNW
3
G5
NW
3
G6
NW
2
G4
NW
2
G3
NW
2
G3
WSW
2
G3
SW
4
G5
WNW
7
G9
NW
9
G11
NW
10
G12
NW
10
G13
NW
11
G15
NW
10
G15
NNW
9
G12
NNW
6
G8
NNW
4
G5
NW
3
G4
N
4
NNE
4
G5
NE
5
NE
4
ENE
4
NE
4
G5
NNE
4
G5
NNE
4
G7
N
4
G6
NNE
5
G6
N
2
G3
NNW
5
NW
5
G6
NW
7
G8
NW
9
G11
NW
11
G14
NW
12
G16
NW
11
G15
NW
10
G15
NW
7
G12
WNW
8
G11
WNW
7
G9
WNW
4
G7
WNW
4
G6
W
4
G6
W
3
G5
W
3
G5
W
3
G5
W
3
G5
W
2
G3
WNW
2
G3
WNW
1
G3
W
2
G3
W
2
G3
W
3
G4
W
4
G5
W
5
G6
WNW
6
G7
WNW
8
G9
WNW
9
G11
WNW
10
G12
WNW
9
G13
WNW
10
G15
WNW
9
G15
WNW
7
G13
WNW
5
G9
W
5
G9
W
4
G8
WSW
4
G8
WSW
3
G6
SW
3
G6
SW
3
G6
WSW
3
G5
WSW
3
G5
SW
3
G4
SSW
3
G4
SSW
3
G5
SW
4
G5
WSW
4
G5
WSW
4
G5
WSW
5
G6
W
7
G8
WNW
9
WNW
10
WNW
11
WNW
11
G12
WNW
10
G12
WNW
9
G12
WNW
8
G11
WNW
7
G9
W
6
G7
W
5
G7
WSW
4
G6
WSW
4
G6
SW
3
G5
SW
3
G4
SW
2
G3
SW
2
G3
SW
1
G3
WSW
1
G2
W
2
SW
2
G3
WSW
3
WSW
3
WSW
4
W
5
WNW
7
WNW
9
WNW
9
WNW
10
WNW
10
WNW
9
WNW
PRECIP
chance %
0%
0%
1%
1%
1%
2%
2%
4%
2%
3%
3%
2%
2%
2%
2%
2%
3%
3%
3%
3%
3%
2%
2%
2%
2%
2%
2%
2%
2%
1%
1%
1%
1%
1%
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%
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%
1%
1%
1%
1%
1%
1%
0%
CLOUDS
cover %
100%
overcast
100%
100%
100%
100%
100%
100%
100%
42%
46%
100%
99%
49%
10%
18%
2%
3%
5%
100%
100%
94%
61%
100%
72%
16%
46%
13%
33%
95%
58%
49%
14%
100%
100%
90%
100%
29%
76%
5%
4%
2%
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%
20%
93%
100%
100%
71%
6%
7%
5%
0%
6%
6%
20%
64%
5%
5%
6%
5%
100%
84%
64%
36%
12%
21%
43%
54%
42%
19%
2%
0%
PRESSURE
hPa · trend
1012
1012101310141013101410151016101310141014101210111012101210101010101110121011
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
81
Temperature
Warm
Wind
Light
Pressure
Stable
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
05:57 AM
SUNSET
08:30 PM
14H 33M OF DAYLIGHT
MOON PHASE
New Moon
3% illuminated
PEAK ACTIVITY

Station Location

37.5858, -122.0483
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-13 00:00 UTC
Site #11180700·USGS

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