USGS · 06479438

BIG SIOUX RIVER

USGS · 06479438LIVE

Big Sioux R nr Watertown, SD

CODINGTON COUNTY, SD44.9424°N, -97.1463°W Updated 14 hr ago

FLOW RATE

18cfs

AIR TEMP

61°F

WIND

13mph NW

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

18cfs 58.4% vs avg

Optimal band: 17–23 cfs

PERIOD HIGH

21cfs

PERIOD LOW

18cfs

RUNNABLE

100%

last 7 day in band

Precipitation History

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

70°

54°

THU

73°

51°

FRI

78°

54°

SAT

83°

59°

SUN

103°

70°

MON

98°

74°

TUE

94°

64°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

69°

mild

69°

70°

69°

67°

64°

61°

58°

57°

55°

54°

53°

52°

51°

53°

58°

63°

66°

68°

69°

71°

72°

73°

72°

71°

67°

64°

63°

62°

57°

56°

55°

54°

56°

62°

65°

66°

65°

64°

71°

72°

75°

78°

77°

75°

73°

72°

71°

70°

69°

67°

64°

63°

62°

61°

60°

59°

60°

63°

67°

70°

74°

77°

80°

81°

83°

82°

80°

78°

75°

73°

71°

72°

71°

70°

71°

72°

73°

76°

79°

83°

87°

90°

94°

96°

99°

101°

103°

100°

95°

92°

89°

87°

85°

83°

82°

81°

79°

78°

76°

77°

79°

WIND

mph · gust · dir

14mph NW

G 18 mph

G18

G19

G14

G13

NNW

G12

NNW

WNW

WSW

G11

NNW

G13

G12

G11

NNW

G10

NNW

NNE

ENE

G10

ESE

G11

ESE

G13

ESE

G16

ESE

G15

G10

G11

G15

G17

G14

G17

G16

G17

G14

ESE

G15

G17

SSE

G17

SSE

G18

SSE

G17

G22

G24

G26

G28

G30

G34

G35

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

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

G29

G18

G31

G39

G37

G38

G36

G35

SSE

G35

SSE

G33

PRECIP

chance %

12%

23%

30%

21%

19%

10%

37%

16%

CLOUDS

cover %

31%

few

31%

28%

22%

29%

11%

28%

100%

32%

17%

42%

22%

16%

20%

99%

100%

90%

100%

98%

100%

77%

69%

22%

100%

39%

86%

100%

35%

22%

91%

100%

63%

100%

35%

100%

68%

100%

16%

46%

39%

63%

94%

100%

41%

100%

55%

PRESSURE

hPa · trend

957

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Ideal

Wind

Moderate

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:43 AM

SUNSET

09:19 PM

15H 36M OF DAYLIGHT7H 15M REMAINING

MOON PHASE

Waxing Gibbous

70% illuminated

Station Location

44.9424, -97.1463

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-06-24 14:04 UTC

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