Waterlands
Alameda C Bl Welch C nr Sunol Ca River
USGS · 11173575
ALAMEDA C BL WELCH C NR SUNOL CA RIVER
USGS · 11173575LIVE

ALAMEDA C BL WELCH C NR SUNOL CA

ALAMEDA COUNTY, CA37.5405°N, -121.8563°W Updated 9 hr ago
FLOW RATE
8cfs
AIR TEMP
56°F
WIND
9mph WSW
FISH INDEX
75SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
8cfs 6.9% vs avg
Optimal band: 1115 cfs
PERIOD HIGH
594cfs
PERIOD LOW
5cfs
RUNNABLE
31%
last 1 year in band
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

13.3in

≈ normal

13.35 in of precipitation so far this year — about average for this point in the season (normal 13.12 in).

YTD Total

13.3in

This year so far

Normal to Date

13.1in

30-yr average

Typical Range

5.8–22.1in

10th–90th pct YTD

Departure

+2%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 2.91" · normal 3.73" (0.8–7.6)
Jan
Feb: 4.90" · normal 3.80" (0.4–7.6)
Feb
Mar: 0.42" · normal 3.09" (0.5–6.4)
Mar
Apr: 4.50" · normal 1.57" (0.3–3.0)
Apr
May: 0.59" · normal 0.80" (0.1–1.5)
May
Jun: 0.03" (so far)· normal 0.18" (0.0–0.4)
Jun
Jul: normal 0.08" (0.0–0.1)
Jul
Aug: normal 0.10" (0.0–0.2)
Aug
Sep: normal 0.11" (0.0–0.3)
Sep
Oct: normal 0.91" (0.0–2.4)
Oct
Nov: normal 1.80" (0.4–3.7)
Nov
Dec: normal 3.29" (0.3–6.3)
Dec
Baseline 19912020 · Source: Open-Meteo05:04 AM
SPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
78°
55°
WED
78°
54°
THU
84°
53°
FRI
74°
53°
SAT
69°
55°
SUN
82°
48°
MON
87°
49°
TIME
TUE
10
NOW
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
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
TEMP
hourly forecast
63°
mild
63°
67°
72°
75°
77°
78°
78°
77°
73°
69°
64°
60°
58°
57°
56°
55°
54°
54°
54°
54°
54°
54°
56°
59°
64°
68°
73°
76°
78°
77°
77°
75°
72°
69°
65°
61°
59°
57°
57°
57°
56°
55°
55°
54°
53°
57°
62°
67°
72°
76°
80°
83°
84°
80°
75°
74°
73°
69°
64°
59°
58°
56°
56°
55°
54°
55°
53°
53°
53°
57°
60°
63°
67°
69°
72°
73°
74°
74°
74°
73°
70°
67°
64°
61°
61°
61°
60°
57°
56°
55°
57°
57°
57°
58°
59°
60°
63°
67°
68°
69°
69°
69°
67°
66°
64°
61°
58°
57°
57°
55°
53°
51°
WIND
mph · gust · dir
12mph W
G 13 mph
12
G13
W
12
G14
W
13
G15
W
14
G16
W
14
G15
W
13
G15
W
13
G15
W
14
G16
W
13
G16
W
12
G15
W
12
G15
W
12
G16
WSW
10
G14
WSW
8
G13
WSW
7
G12
WSW
8
G14
WSW
8
G14
WSW
10
G14
W
10
G14
W
10
G13
W
10
G14
W
10
G13
W
11
G14
W
13
G15
WSW
14
G16
W
13
G15
W
13
G15
W
14
G16
W
14
G16
W
14
G17
W
14
G17
W
14
G17
W
13
G16
W
12
G15
W
12
G15
W
8
G11
WSW
5
G8
SW
5
G7
S
5
G6
S
5
S
5
S
5
S
5
S
6
S
6
S
5
G6
S
5
G6
SW
5
G6
SW
5
G6
WSW
5
G7
WSW
6
G7
WSW
7
G8
W
8
G9
W
9
G11
W
8
G11
W
6
G10
W
6
G10
W
5
G9
W
4
G8
WSW
4
G6
SW
5
G6
SSW
5
G6
SSW
6
S
6
S
6
SSW
6
S
6
S
5
G6
S
6
S
5
G7
SSW
5
G7
SSW
5
G7
SW
6
G8
WSW
7
G10
WSW
7
G10
WSW
8
G12
W
8
G13
W
9
G14
W
8
G12
W
8
G14
W
8
G14
W
6
G13
WSW
5
G11
WSW
4
G7
SW
5
G7
SW
5
G7
SW
5
G8
SW
5
G7
SW
5
G7
SW
5
G7
WSW
5
G8
WSW
6
G8
WSW
7
G9
WSW
7
G11
WSW
10
G13
WSW
11
G13
WSW
11
G14
WSW
14
G15
W
13
G15
W
14
G17
W
14
G16
W
15
G17
W
16
G19
W
15
G18
W
13
G18
WSW
11
G17
WSW
10
G15
SW
8
G12
SW
5
G8
SSW
4
S
4
SSE
5
SSE
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%
12%
12%
12%
12%
12%
12%
3%
3%
3%
3%
3%
3%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
CLOUDS
cover %
14%
few
14%
3%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
2%
3%
4%
8%
28%
100%
100%
100%
100%
100%
100%
37%
4%
1%
0%
0%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
5%
0%
0%
0%
0%
0%
0%
5%
5%
5%
8%
11%
12%
6%
12%
100%
10%
5%
11%
85%
100%
100%
100%
100%
100%
56%
35%
10%
11%
8%
11%
7%
7%
7%
13%
4%
43%
49%
75%
88%
100%
83%
45%
11%
63%
100%
100%
100%
100%
100%
100%
100%
28%
0%
0%
0%
0%
0%
0%
0%
0%
0%
22%
51%
67%
58%
36%
PRESSURE
hPa · trend
1004
100410041004100310041002100110001000999100110001001100010011001100210011001
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
75
Temperature
Ideal
Wind
Light
Pressure
Rising — Slow
Moon Phase
Good
DAYLIGHT
SUNRISE
05:47 AM
SUNSET
08:32 PM
14H 45M OF DAYLIGHT10H 59M REMAINING
MOON PHASE
First Quarter
58% illuminated

Station Location

37.5405, -121.8563
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-23 09:33 UTC
Site #11173575·USGS

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