USGS · 07018500

BIG RIVER

USGS · 07018500LIVE

Big River at Byrnesville, MO

JEFFERSON COUNTY, MO38.3917°N, -90.6378°W Updated 16 hr ago

FLOW RATE

2,555cfs

GAUGE HT

8.26ft

AIR TEMP

83°F

WIND

8mph NNE

FISH INDEX

56SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

2,555cfs 44.9% vs avg

Optimal band: 216–292 cfs

PERIOD HIGH

2,555cfs

PERIOD LOW

230cfs

RUNNABLE

75%

last 7 day in band

Gauge Height

8.26ft

Precipitation History

Your History · Big River at Byrnesville, MO

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Weather Conditions

WEATHER CONDITIONS

TODAY

88°

71°

MON

89°

69°

TUE

90°

69°

WED

92°

70°

THU

95°

71°

FRI

93°

71°

SAT

94°

68°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

88°

mild

88°

87°

85°

81°

79°

77°

76°

74°

73°

72°

71°

70°

69°

71°

75°

79°

82°

85°

87°

88°

89°

88°

85°

82°

79°

77°

76°

74°

73°

72°

71°

70°

69°

71°

75°

79°

82°

85°

87°

88°

90°

89°

88°

84°

79°

76°

75°

74°

73°

72°

71°

70°

73°

77°

81°

84°

87°

89°

90°

92°

91°

88°

85°

79°

77°

76°

75°

74°

73°

72°

71°

74°

78°

82°

86°

88°

91°

93°

94°

95°

93°

90°

85°

83°

82°

79°

77°

76°

74°

73°

75°

78°

82°

86°

WIND

mph · gust · dir

7mph N

G 10 mph

G10

G12

G13

NNE

G10

NNE

G12

NNE

G10

NNE

G13

G15

G14

G15

G14

G12

G13

G12

NNE

NNW

ESE

G11

ENE

G11

ENE

G11

ENE

G13

G12

G11

G14

ESE

ENE

NNE

ENE

ESE

ENE

G12

ENE

ESE

SSE

WSW

WNW

NNW

NNE

ENE

ESE

ENE

ESE

ENE

PRECIP

chance %

11%

CLOUDS

cover %

clear

11%

24%

16%

100%

21%

33%

97%

98%

54%

71%

11%

13%

31%

100%

13%

32%

44%

43%

35%

34%

PRESSURE

hPa · trend

1002

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Light

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:49 AM

SUNSET

08:27 PM

14H 38M OF DAYLIGHT

MOON PHASE

Waning Crescent

5% illuminated

Station Location

38.3917, -90.6378

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DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC

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