USGS · 07018500

BIG RIVER

USGS · 07018500LIVE

Big River at Byrnesville, MO

JEFFERSON COUNTY, MO38.3917°N, -90.6378°W Updated 25 min ago

FLOW RATE

1,740cfs

GAUGE HT

6.69ft

AIR TEMP

85°F

WIND

8mph N

FISH INDEX

56SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

1,740cfs 307.8% vs avg

Optimal band: 1,862–2,519 cfs

PERIOD HIGH

2,850cfs

PERIOD LOW

237cfs

RUNNABLE

30%

last 1 day in band

Gauge Height

6.69ft

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°

71°

THU

95°

72°

FRI

97°

74°

SAT

97°

73°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

87°

mild

87°

84°

81°

78°

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°

89°

90°

89°

85°

82°

79°

77°

75°

74°

73°

72°

71°

74°

78°

81°

84°

87°

89°

90°

91°

92°

91°

90°

86°

79°

77°

76°

75°

74°

73°

72°

74°

78°

83°

87°

90°

92°

93°

94°

95°

93°

88°

84°

82°

81°

80°

79°

78°

77°

76°

75°

74°

76°

80°

84°

88°

92°

95°

WIND

mph · gust · dir

7mph NNE

G 11 mph

G11

NNE

G13

G15

NNE

G12

NNE

G10

NNE

G13

G15

G14

G15

G14

G12

G13

G12

NNE

NNW

ESE

G11

ENE

G11

ENE

G11

G13

G12

G11

G14

ENE

G12

SSE

SSW

WSW

WNW

NNW

ENE

ESE

NNE

SSW

WSW

SSW

ESE

PRECIP

chance %

11%

CLOUDS

cover %

clear

13%

12%

23%

16%

58%

73%

100%

55%

32%

30%

34%

48%

25%

14%

10%

37%

40%

51%

65%

81%

96%

46%

24%

100%

50%

100%

90%

65%

67%

48%

46%

45%

44%

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 17:45 UTC

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