USGS · 06479500

BIG SIOUX RIVER

USGS · 06479500LIVE

Big Sioux R ab Watertown, SD

RAUVILLE TOWNSHIP, SD45.0061°N, -97.1644°W Updated 17 min ago

FLOW RATE

12.4cfs

GAUGE HT

3.56ft

AIR TEMP

70°F

WIND

8mph NE

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

12.4cfs 82.2% vs avg

Optimal band: 12–16 cfs

PERIOD HIGH

16.9cfs

PERIOD LOW

12.4cfs

RUNNABLE

81%

last 1 day in band

Gauge Height

3.56ft

Precipitation History

Your History · Big Sioux R ab Watertown, SD

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Weather Conditions

WEATHER CONDITIONS

TODAY

74°

52°

FRI

74°

56°

SAT

78°

61°

SUN

97°

68°

MON

98°

76°

TUE

95°

69°

WED

93°

73°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

72°

mild

72°

70°

66°

63°

61°

59°

58°

57°

56°

57°

56°

59°

62°

66°

69°

70°

71°

73°

69°

73°

74°

72°

71°

68°

66°

65°

64°

63°

62°

61°

62°

63°

66°

69°

71°

72°

76°

77°

78°

76°

72°

70°

69°

68°

69°

70°

71°

72°

73°

75°

76°

81°

88°

91°

92°

94°

96°

97°

94°

88°

82°

81°

83°

82°

79°

80°

79°

77°

79°

82°

85°

90°

92°

95°

97°

98°

95°

91°

85°

80°

78°

76°

74°

73°

77°

73°

71°

69°

72°

77°

81°

85°

88°

WIND

mph · gust · dir

8mph E

G 10 mph

G10

G12

G13

G12

G14

ESE

G13

ESE

G13

ESE

G12

G14

G12

G13

ESE

G13

ESE

G13

G18

G19

SSE

G18

SSE

G16

G15

SSW

G16

G18

SSE

G20

SSE

G19

SSE

G18

G20

G16

G18

SSE

G20

SSE

G21

SSE

G27

SSE

G30

SSE

G31

SSE

G36

SSE

G36

SSE

G35

SSE

G32

SSE

G30

SSE

G29

SSE

G28

SSE

G29

SSE

G29

SSE

G30

SSE

G30

SSE

G31

SSE

G32

SSE

G32

SSE

G33

SSE

G34

SSE

G35

G33

SSE

G33

SSE

G34

SSE

G34

G32

G31

SSE

G26

SSE

G25

SSE

G24

G22

G20

SSW

G20

SSW

G20

SSW

G20

SSW

G20

SSW

G20

SSW

G26

G32

SSE

G34

SSE

G38

SSE

G37

SSE

G37

SSE

G41

G40

G38

G36

G37

G35

G34

G32

G30

SSW

G28

SSW

G24

SSW

G19

G20

G21

WSW

G15

SSW

WSW

G12

G16

SSW

G19

SSW

G17

SSW

G13

SSW

PRECIP

chance %

22%

37%

27%

18%

11%

19%

13%

17%

CLOUDS

cover %

100%

overcast

100%

79%

100%

16%

100%

94%

100%

63%

100%

69%

80%

15%

88%

31%

96%

33%

100%

66%

78%

60%

30%

100%

24%

48%

100%

73%

94%

100%

32%

11%

35%

14%

46%

82%

88%

100%

55%

56%

11%

24%

100%

21%

29%

22%

10%

PRESSURE

hPa · trend

955

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Light

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:43 AM

SUNSET

09:19 PM

15H 36M OF DAYLIGHT2H 47M REMAINING

MOON PHASE

Waxing Gibbous

81% illuminated

Station Location

45.0061, -97.1644

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DATA · USGS · NOAA · NWSUPDATED 2026-06-25 18:32 UTC

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