USGS · 06485950

BIG SIOUX RIVER

USGS · 06485950LIVE

BIG SIOUX RIVER AT SIOUX CITY, IA

NORTH SIOUX CITY, SD42.5244°N, -96.4805°W Updated 116 d ago

FLOW RATE

374cfs

AIR TEMP

74°F

WIND

7mph NNW

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

374cfs 55.5% vs avg

Optimal band: 795–1,075 cfs

PERIOD HIGH

4,062cfs

PERIOD LOW

69cfs

RUNNABLE

23%

last 1 year in band

Precipitation History

Your History · BIG SIOUX RIVER AT SIOUX CITY, IA

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Weather Conditions

WEATHER CONDITIONS

TODAY

81°

55°

FRI

84°

65°

SAT

77°

65°

SUN

98°

73°

MON

99°

79°

TUE

98°

77°

WED

98°

78°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

81°

mild

81°

80°

79°

77°

75°

73°

70°

69°

68°

67°

66°

65°

66°

68°

71°

75°

78°

80°

81°

83°

84°

83°

82°

80°

76°

73°

72°

71°

69°

68°

65°

66°

67°

70°

74°

72°

73°

75°

76°

77°

74°

72°

73°

74°

75°

76°

77°

75°

74°

76°

79°

83°

87°

90°

93°

95°

97°

98°

97°

94°

90°

88°

86°

84°

83°

82°

81°

80°

79°

80°

81°

84°

86°

89°

92°

94°

97°

98°

99°

98°

93°

87°

85°

84°

77°

78°

77°

78°

80°

84°

87°

WIND

mph · gust · dir

5mph NW

G 8 mph

NNW

ENE

G10

ESE

G11

ESE

G10

ESE

G12

ESE

G10

ESE

G14

ESE

G15

G12

G11

ESE

G10

ESE

G10

ESE

G10

G12

G13

G15

ESE

G13

ESE

G16

G17

G24

SSE

G22

SSE

G26

G24

G27

G25

G21

G19

G21

SSE

G25

SSE

G27

G28

G26

SSE

G24

G25

G24

G22

G25

ESE

G30

ESE

G32

G35

G34

G31

G30

G32

G34

G33

SSE

G30

SSE

G25

G24

G22

G23

G22

G23

G24

G26

G28

G30

G33

G36

SSE

G37

SSE

G39

SSE

G39

SSE

G38

SSE

G38

G37

SSE

G37

SSE

G35

G37

SSE

G37

SSE

G36

G33

G30

G27

SSW

G27

SSW

G27

SSW

G28

SSW

G28

SSW

G28

G22

SSW

G15

SSW

G13

SSE

G30

G39

SSW

G41

SSW

G39

SSW

G32

SSW

G26

G23

G22

SSE

G21

SSE

G20

G21

PRECIP

chance %

20%

10%

37%

40%

12%

CLOUDS

cover %

100%

overcast

100%

59%

100%

71%

65%

20%

45%

50%

92%

100%

55%

12%

10%

100%

63%

35%

97%

100%

76%

100%

60%

61%

81%

87%

100%

81%

47%

11%

68%

100%

90%

100%

90%

21%

100%

85%

72%

100%

55%

12%

11%

66%

85%

58%

10%

100%

93%

83%

76%

79%

86%

83%

PRESSURE

hPa · trend

976

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Light

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:49 AM

SUNSET

09:07 PM

15H 18M OF DAYLIGHT4H 41M REMAINING

MOON PHASE

Waxing Gibbous

80% illuminated

Station Location

42.5244, -96.4805

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DATA · USGS · NOAA · NWSUPDATED 2026-06-25 16:26 UTC

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