USGS · 06479770

BIG SIOUX RIVER

USGS · 06479770LIVE

Big Sioux R nr Bruce, SD

BROOKINGS COUNTY, SD44.4678°N, -96.8876°W Updated 15 hr ago

FLOW RATE

122cfs

AIR TEMP

67°F

WIND

8mph NNW

FISH INDEX

75SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

122cfs 18.4% vs avg

Optimal band: 194–262 cfs

PERIOD HIGH

2,045cfs

PERIOD LOW

122cfs

RUNNABLE

32%

last 30 day in band

Precipitation History

Your History · Big Sioux R nr Bruce, SD

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Weather Conditions

WEATHER CONDITIONS

TODAY

74°

51°

FRI

77°

57°

SAT

79°

62°

SUN

99°

69°

MON

97°

76°

TUE

98°

67°

WED

99°

80°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

74°

mild

74°

73°

71°

68°

65°

63°

61°

60°

59°

58°

57°

58°

60°

64°

67°

70°

72°

74°

73°

74°

71°

75°

77°

76°

74°

70°

67°

66°

64°

63°

62°

63°

64°

67°

68°

69°

72°

77°

79°

75°

72°

73°

72°

71°

70°

69°

70°

71°

72°

73°

75°

78°

83°

86°

89°

92°

94°

97°

99°

95°

92°

88°

86°

83°

82°

81°

79°

78°

77°

79°

81°

83°

86°

88°

91°

95°

97°

96°

95°

94°

88°

83°

79°

76°

75°

73°

71°

69°

68°

67°

69°

73°

79°

WIND

mph · gust · dir

5mph N

G 6 mph

ENE

G11

G13

G15

ESE

G16

ESE

G14

ESE

G11

G18

ESE

G15

ESE

G14

G19

G18

SSE

G15

SSE

G14

G15

G14

G18

SSE

G20

SSE

G19

G18

G19

SSE

G15

G19

G17

SSE

G19

SSE

G20

SSE

G22

SSE

G28

SSE

G33

SSE

G34

SSE

G33

SSE

G32

SSE

G30

SSE

G28

SSE

G27

SSE

G26

SSE

G27

SSE

G29

SSE

G31

SSE

G32

SSE

G32

SSE

G31

SSE

G30

SSE

G32

SSE

G32

G34

SSE

G35

SSE

G37

SSE

G33

G32

G33

G34

SSE

G32

SSE

G28

SSE

G24

G23

G21

G22

G23

G28

G31

G34

SSE

G37

G36

SSE

G37

SSE

G40

SSE

G37

SSE

G37

SSE

G39

SSE

G37

SSE

G37

SSE

G36

SSE

G35

G33

G30

G29

SSW

G27

SSW

G22

SSW

G19

G18

G16

WSW

NNW

WSW

SSW

ESE

ENE

G11

G13

PRECIP

chance %

10%

11%

18%

33%

23%

18%

23%

19%

17%

CLOUDS

cover %

100%

overcast

100%

61%

100%

74%

36%

95%

100%

55%

76%

85%

100%

45%

100%

81%

21%

91%

27%

75%

76%

100%

59%

99%

100%

95%

100%

18%

100%

89%

100%

60%

49%

56%

100%

90%

77%

69%

73%

81%

PRESSURE

hPa · trend

960

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Ideal

Wind

Light

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:44 AM

SUNSET

09:16 PM

15H 32M OF DAYLIGHT5H 30M REMAINING

MOON PHASE

Waxing Gibbous

80% illuminated

Station Location

44.4678, -96.8876

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DATA · USGS · NOAA · NWSUPDATED 2026-06-25 15:46 UTC

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