USGS · 06479770

BIG SIOUX RIVER

USGS · 06479770LIVE

Big Sioux R nr Bruce, SD

BROOKINGS COUNTY, SD44.4678°N, -96.8876°W Updated 13 hr ago

FLOW RATE

134cfs

AIR TEMP

63°F

WIND

11mph NW

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

134cfs 58.0% vs avg

Optimal band: 150–202 cfs

PERIOD HIGH

255cfs

PERIOD LOW

134cfs

RUNNABLE

38%

last 7 day in band

Precipitation History

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

72°

54°

THU

74°

52°

FRI

79°

53°

SAT

83°

58°

SUN

105°

70°

MON

100°

75°

TUE

102°

63°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

71°

mild

71°

72°

71°

70°

68°

65°

62°

60°

58°

57°

56°

55°

54°

53°

52°

55°

60°

64°

67°

69°

70°

72°

73°

74°

73°

74°

73°

72°

67°

64°

62°

59°

57°

55°

54°

53°

56°

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°

WIND

mph · gust · dir

15mph NW

G 20 mph

G20

G18

G16

G19

G17

G18

G13

G15

NNW

G12

NNW

G14

NNW

G10

WNW

G10

WNW

G11

WNW

G10

NNW

G12

NNW

G11

G12

G11

NNW

G11

NNW

NNE

G11

ENE

G11

G12

ESE

G13

ESE

G10

ESE

G10

ESE

G11

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

PRECIP

chance %

19%

26%

23%

17%

29%

CLOUDS

cover %

31%

few

31%

29%

34%

10%

97%

69%

18%

100%

84%

24%

87%

100%

99%

100%

95%

82%

100%

43%

21%

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%

PRESSURE

hPa · trend

961

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 DAYLIGHT7H 19M REMAINING

MOON PHASE

Waxing Gibbous

70% illuminated

Station Location

44.4678, -96.8876

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-06-24 13:57 UTC

Site #06479770·USGS

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