Old R A Quimby Island nr Bethel Island Ca River

USGS · 11313434

OLD R A QUIMBY ISLAND NR BETHEL ISLAND CA RIVER

USGS · 11313434LIVE

OLD R A QUIMBY ISLAND NR BETHEL ISLAND CA

CONTRA COSTA COUNTY, CA38.0272°N, -121.5644°W Updated 276 d ago

FLOW RATE

1,658cfs

AIR TEMP

65°F

WIND

10mph WNW

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

1,658cfs

Optimal band: 6,669–9,023 cfs

PERIOD HIGH

9,932cfs

PERIOD LOW

1,658cfs

RUNNABLE

70%

last 1 year in band

Precipitation History

Your History · OLD R A QUIMBY ISLAND NR BETHEL ISLAND CA

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Weather Conditions

WEATHER CONDITIONS

TODAY

91°

57°

SUN

84°

58°

MON

95°

52°

TUE

96°

51°

WED

98°

52°

THU

103°

57°

FRI

108°

58°

TIME

SAT

NOW

SUN

MON

TUE

WED

THU

TEMP

hourly forecast

70°

mild

70°

74°

79°

83°

87°

90°

91°

89°

86°

83°

78°

73°

70°

68°

66°

64°

62°

60°

59°

58°

59°

61°

64°

66°

71°

74°

78°

81°

83°

84°

82°

79°

74°

69°

66°

64°

61°

58°

56°

55°

54°

53°

52°

57°

63°

70°

75°

82°

88°

92°

94°

95°

94°

92°

86°

76°

66°

59°

55°

53°

52°

51°

55°

62°

69°

75°

81°

86°

91°

94°

96°

94°

86°

77°

65°

59°

56°

55°

54°

53°

52°

57°

65°

72°

78°

84°

88°

92°

95°

97°

98°

95°

90°

84°

76°

68°

61°

59°

WIND

mph · gust · dir

8mph WNW

G 10 mph

G10

WNW

G12

WNW

G16

WNW

G19

WNW

G18

WNW

G19

WNW

G20

WNW

G20

WNW

G18

WNW

G18

WNW

G18

WNW

G11

G13

G14

G12

G17

G16

WNW

G16

WNW

G14

WNW

G11

WNW

G11

WNW

G13

WNW

G13

WNW

G13

WNW

G14

WNW

G12

G13

G11

WNW

G12

G13

WNW

G13

G16

G15

WSW

WNW

G14

G16

WSW

G15

G14

WSW

WNW

G10

WNW

G10

WNW

G13

WNW

G15

G16

WSW

G14

WSW

G11

WSW

PRECIP

chance %

CLOUDS

cover %

clear

100%

73%

64%

100%

98%

100%

68%

14%

100%

84%

15%

PRESSURE

hPa · trend

1016

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Ideal

Wind

Moderate

Pressure

Rising — Slow

Moon Phase

Average

DAYLIGHT

SUNRISE

05:48 AM

SUNSET

08:32 PM

14H 44M OF DAYLIGHT11H 59M REMAINING

MOON PHASE

Waning Gibbous

80% illuminated

Station Location

38.0272, -121.5644

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DATA · USGS · NOAA · NWSUPDATED 2026-07-04 08:33 UTC

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