USGS · 06479500

BIG SIOUX RIVER

USGS · 06479500LIVE

Big Sioux R ab Watertown, SD

RAUVILLE TOWNSHIP, SD45.0061°N, -97.1644°W Updated 15 hr ago

FLOW RATE

16cfs

AIR TEMP

63°F

WIND

14mph WNW

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

16cfs 46.9% vs avg

Optimal band: 54–74 cfs

PERIOD HIGH

117cfs

PERIOD LOW

16cfs

RUNNABLE

29%

last 30 day in band

Precipitation History

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

70°

53°

THU

73°

50°

FRI

77°

55°

SAT

84°

60°

SUN

103°

70°

MON

98°

73°

TUE

90°

64°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

70°

mild

70°

69°

67°

64°

60°

59°

57°

55°

54°

53°

52°

51°

50°

53°

58°

62°

65°

67°

68°

70°

71°

72°

73°

72°

71°

68°

65°

61°

60°

58°

57°

56°

55°

57°

62°

65°

64°

67°

65°

70°

72°

75°

77°

75°

73°

72°

71°

70°

69°

65°

63°

62°

61°

60°

61°

63°

66°

70°

74°

77°

80°

82°

83°

84°

82°

81°

79°

75°

73°

71°

70°

71°

72°

73°

76°

79°

83°

87°

90°

93°

96°

98°

101°

103°

99°

93°

91°

87°

85°

84°

82°

81°

79°

78°

77°

79°

83°

WIND

mph · gust · dir

14mph NW

G 18 mph

G18

G19

G18

G17

G18

G17

G11

NNW

G11

NNW

G13

NNW

G11

NNW

WNW

G11

WNW

G13

G11

NNW

G10

G11

ESE

ENE

G10

G11

G14

ESE

G14

SSE

G13

G16

G17

G14

G15

G17

SSE

G18

SSE

G17

G22

G24

ESE

G26

G28

G30

G34

G35

SSE

G34

SSE

G34

SSE

G34

SSE

G34

SSE

G34

SSE

G35

SSE

G32

SSE

G28

SSE

G27

SSE

G28

SSE

G28

SSE

G29

SSE

G28

SSE

G28

SSE

G27

SSE

G26

SSE

G28

SSE

G30

G35

G32

SSE

G31

G30

G31

G32

G33

G30

G29

G26

SSE

G26

SSE

G24

SSE

G25

G24

G23

SSW

G22

SSW

G24

SSW

G27

SSW

G26

SSW

G15

WSW

G12

SSW

G29

G18

G31

G39

G37

G38

G36

G35

G33

G30

PRECIP

chance %

12%

26%

48%

50%

13%

14%

12%

CLOUDS

cover %

25%

few

25%

16%

10%

79%

36%

25%

22%

28%

80%

41%

19%

25%

24%

39%

100%

88%

100%

93%

88%

99%

21%

100%

50%

91%

100%

99%

100%

41%

11%

38%

100%

42%

100%

75%

100%

81%

51%

49%

57%

77%

100%

59%

100%

86%

66%

PRESSURE

hPa · trend

956

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Ideal

Wind

Moderate

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:42 AM

SUNSET

09:19 PM

15H 37M OF DAYLIGHT5H 55M REMAINING

MOON PHASE

Waxing Gibbous

71% illuminated

Station Location

45.0061, -97.1644

Loading map…

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

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