USGS · 06479500

BIG SIOUX RIVER

USGS · 06479500LIVE

Big Sioux R ab Watertown, SD

RAUVILLE TOWNSHIP, SD45.0061°N, -97.1644°W Updated 20 hr ago

FLOW RATE

16cfs

AIR TEMP

69°F

WIND

16mph NW

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

16cfs 68.1% vs avg

Optimal band: 25–33 cfs

PERIOD HIGH

51cfs

PERIOD LOW

16cfs

RUNNABLE

13%

last 7 day in band

Precipitation History

Your History · Big Sioux R ab Watertown, SD

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Weather Conditions

WEATHER CONDITIONS

TODAY

70°

53°

THU

73°

51°

FRI

77°

56°

SAT

84°

63°

SUN

101°

69°

MON

101°

77°

TUE

94°

69°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

67°

mild

67°

64°

61°

59°

58°

56°

55°

54°

53°

52°

51°

53°

58°

62°

65°

67°

68°

70°

71°

72°

73°

72°

71°

68°

65°

61°

60°

58°

57°

56°

58°

60°

63°

68°

71°

72°

77°

75°

76°

77°

76°

75°

74°

70°

68°

66°

64°

68°

67°

66°

64°

63°

65°

69°

72°

76°

79°

81°

83°

84°

83°

79°

74°

71°

70°

69°

70°

72°

73°

74°

76°

79°

85°

89°

93°

96°

98°

99°

100°

101°

98°

94°

91°

90°

88°

84°

83°

82°

81°

79°

78°

77°

80°

84°

88°

91°

94°

96°

98°

WIND

mph · gust · dir

11mph NW

G 19 mph

G19

G11

G13

NNW

G12

G11

NNW

G10

NNW

G10

WNW

NNW

G11

G13

NNW

G13

G11

NNW

NNE

ESE

G10

ENE

G11

G10

ESE

G11

ESE

G14

ESE

G14

G16

G18

SSE

G17

G18

SSE

G18

SSE

G18

SSE

G17

SSE

G18

SSE

G19

SSE

G19

SSE

G20

SSE

G21

SSE

G22

SSE

G25

SSE

G29

G30

G29

SSE

G28

SSE

G26

SSE

G27

SSE

G27

G29

G32

SSE

G33

SSE

G32

SSE

G30

SSE

G26

SSE

G25

SSE

G26

SSE

G26

SSE

G28

SSE

G28

SSE

G27

SSE

G26

SSE

G26

SSE

G26

SSE

G27

SSE

G31

SSE

G33

G35

G37

SSE

G35

G33

G32

G31

G29

G27

G26

SSE

G26

SSE

G25

SSE

G23

G22

G24

SSE

G30

G34

G37

G38

G39

G40

G38

G37

G36

G35

G33

G31

G30

G29

SSW

G28

SSW

G25

SSW

PRECIP

chance %

12%

26%

48%

50%

13%

14%

12%

CLOUDS

cover %

100%

overcast

100%

81%

25%

22%

28%

80%

41%

19%

25%

24%

39%

100%

88%

100%

93%

88%

99%

100%

75%

100%

97%

96%

100%

25%

37%

100%

95%

100%

29%

37%

57%

14%

13%

12%

37%

56%

55%

100%

66%

94%

100%

96%

100%

20%

19%

39%

57%

73%

PRESSURE

hPa · trend

956

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Moderate

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:42 AM

SUNSET

09:19 PM

15H 37M OF DAYLIGHT1H 2M REMAINING

MOON PHASE

Waxing Gibbous

73% illuminated

Station Location

45.0061, -97.1644

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DATA · USGS · NOAA · NWSUPDATED 2026-06-24 20:17 UTC

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