Waterlands
Old River
USGS · 11313315
OLD RIVER
USGS · 11313315LIVE

OLD RIVER NEAR BYRON CA

CONTRA COSTA COUNTY, CA37.8910°N, -121.5702°W Updated 6 hr ago
FLOW RATE
767cfs
AIR TEMP
68°F
WIND
3mph WNW
FISH INDEX
69SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 30 DAY
767cfs
Optimal band: 2,661–3,599 cfs
PERIOD HIGH
4,639cfs
PERIOD LOW
767cfs
RUNNABLE
45%
last 30 day in band
Precipitation History
Your History · OLD RIVER NEAR BYRON CA

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Weather Conditions
WEATHER CONDITIONS
TODAY
92°
56°
SAT
94°
57°
SUN
85°
59°
MON
94°
54°
TUE
97°
53°
WED
103°
54°
THU
106°
59°
TIME
SAT
7
NOW
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
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
TEMP
hourly forecast
59°
mild
59°
66°
71°
77°
82°
87°
90°
93°
94°
93°
92°
90°
86°
81°
75°
73°
71°
68°
66°
63°
62°
61°
60°
59°
62°
67°
72°
76°
79°
79°
77°
79°
80°
81°
82°
85°
84°
80°
70°
66°
63°
60°
59°
58°
57°
56°
55°
54°
59°
64°
70°
76°
82°
87°
91°
93°
94°
93°
92°
89°
82°
73°
64°
59°
57°
55°
55°
54°
54°
53°
53°
53°
57°
63°
69°
76°
83°
88°
92°
95°
97°
97°
94°
90°
83°
74°
64°
61°
59°
58°
57°
57°
56°
55°
55°
54°
59°
66°
73°
80°
85°
90°
95°
98°
101°
103°
100°
95°
87°
80°
74°
68°
WIND
mph · gust · dir
2mph NE
2
NE
2
G5
NNW
2
G9
NNW
1
G7
NW
1
G6
WSW
1
G6
WSW
4
G5
WSW
7
G8
WSW
10
G11
WSW
11
G13
WSW
11
G13
W
11
G13
W
10
G13
W
6
G11
W
5
G8
WSW
5
G7
SW
4
G6
WSW
3
G7
W
6
ENE
4
G6
SE
4
SE
5
G6
E
3
G4
E
4
E
2
G3
NE
0
G3
W
1
G6
SW
3
G11
W
4
G5
WNW
8
G12
W
8
G11
W
8
G11
WSW
5
G6
W
8
W
9
W
11
WSW
9
WSW
7
G11
WSW
8
G16
WSW
8
G14
W
7
W
7
W
5
W
6
W
6
W
6
W
5
W
5
W
5
W
5
WNW
4
NW
4
WNW
4
W
4
G5
WSW
7
SW
11
WSW
13
WSW
15
WSW
13
WSW
14
WSW
13
WSW
11
G15
WSW
10
G16
WSW
10
G13
WSW
9
WSW
8
WSW
7
WSW
7
W
7
W
6
W
6
W
5
W
5
WNW
5
G6
WNW
6
WNW
5
G6
WNW
4
G5
WNW
5
W
8
WSW
10
WSW
12
WSW
14
WSW
15
WSW
15
WSW
15
WSW
13
G16
WSW
11
G14
WSW
10
G15
WSW
9
WSW
8
WSW
7
W
7
W
7
W
6
W
6
WNW
5
WNW
4
G6
WNW
5
G7
WNW
6
G8
WNW
7
G8
NW
7
NW
8
NW
8
NW
8
NW
9
NW
11
W
13
WSW
14
WSW
13
G14
WSW
12
G15
WSW
11
G14
WSW
10
G11
WSW
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%
1%
1%
1%
1%
1%
1%
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%
CLOUDS
cover %
2%
clear
2%
2%
1%
0%
0%
0%
0%
0%
0%
0%
100%
100%
56%
2%
11%
93%
100%
100%
100%
3%
8%
100%
87%
5%
1%
1%
32%
100%
100%
100%
100%
100%
90%
86%
83%
8%
6%
6%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
6%
6%
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%
5%
6%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
2%
PRESSURE
hPa · trend
1015
1015101510131014101410141010101210131012101110141014101310111014101510131009
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
69
Temperature
Warm
Wind
Calm
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:48 AM
SUNSET
08:32 PM
14H 44M OF DAYLIGHT13H 36M REMAINING
MOON PHASE
Waning Gibbous
81% illuminated

Station Location

37.8910, -121.5702
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-04 06:56 UTC
Site #11313315·USGS

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