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

135cfs

AIR TEMP

66°F

WIND

14mph WNW

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

135cfs 58.5% vs avg

Optimal band: 403–545 cfs

PERIOD HIGH

2,963cfs

PERIOD LOW

135cfs

RUNNABLE

18%

last 1 year in band

Precipitation History

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

72°

54°

THU

74°

52°

FRI

79°

55°

SAT

83°

58°

SUN

105°

70°

MON

100°

75°

TUE

102°

63°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

72°

mild

72°

71°

68°

65°

62°

60°

58°

57°

56°

55°

54°

53°

52°

54°

59°

64°

67°

69°

70°

72°

73°

74°

73°

72°

68°

64°

62°

60°

59°

58°

57°

55°

57°

62°

67°

71°

72°

71°

76°

78°

79°

78°

75°

74°

70°

68°

66°

64°

63°

61°

60°

59°

58°

60°

63°

67°

71°

75°

78°

80°

82°

83°

82°

80°

79°

76°

75°

73°

72°

71°

70°

71°

72°

73°

75°

76°

80°

84°

87°

90°

94°

99°

102°

105°

101°

96°

92°

89°

86°

84°

82°

81°

79°

77°

76°

77°

80°

85°

WIND

mph · gust · dir

13mph NW

G 17 mph

G17

WNW

G13

G15

NNW

G14

NNW

G12

NNW

WNW

G10

WNW

G12

NNW

G10

G13

G14

G13

NNW

G12

NNW

G11

NNW

NNE

G10

G11

G13

ESE

G12

G13

ESE

G12

ESE

G13

G14

G13

G15

G16

G17

SSE

G19

SSE

G22

SSE

G25

SSE

G28

SSE

G29

G32

G34

SSE

G32

SSE

G31

SSE

G30

G32

SSE

G32

G33

G32

SSE

G32

G28

SSE

G27

SSE

G26

SSE

G26

SSE

G27

SSE

G27

SSE

G27

SSE

G26

SSE

G26

SSE

G25

G31

G34

G31

G32

SSE

G32

G36

G33

G31

G30

G29

G30

G28

SSE

G26

SSE

G26

SSE

G26

G25

G24

G25

G26

SSW

G27

G25

G31

G32

G37

G38

G36

SSE

G34

SSE

G32

SSE

G33

SSE

G34

SSE

G34

SSE

G32

G30

PRECIP

chance %

22%

38%

31%

22%

CLOUDS

cover %

28%

few

28%

20%

17%

91%

100%

17%

86%

26%

13%

17%

18%

12%

14%

36%

16%

69%

93%

100%

72%

41%

91%

60%

100%

95%

100%

19%

15%

49%

85%

100%

17%

12%

10%

100%

96%

43%

100%

41%

16%

69%

66%

100%

67%

100%

80%

88%

100%

55%

27%

22%

35%

50%

65%

PRESSURE

hPa · trend

960

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Ideal

Wind

Moderate

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:44 AM

SUNSET

09:16 PM

15H 32M OF DAYLIGHT6H 6M REMAINING

MOON PHASE

Waxing Gibbous

71% illuminated

Station Location

44.4678, -96.8876

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-06-24 15:10 UTC

Site #06479770·USGS

Create a free account to save favorites, set flow alerts, and track conditions