USGS · 06479438

BIG SIOUX RIVER

USGS · 06479438LIVE

Big Sioux R nr Watertown, SD

CODINGTON COUNTY, SD44.9424°N, -97.1463°W Updated 17 hr ago

FLOW RATE

14cfs

AIR TEMP

70°F

WIND

6mph N

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

14cfs 44.6% vs avg

Optimal band: 49–67 cfs

PERIOD HIGH

1,051cfs

PERIOD LOW

14cfs

RUNNABLE

14%

last 1 year in band

Precipitation History

Your History · Big Sioux R nr Watertown, SD

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Weather Conditions

WEATHER CONDITIONS

TODAY

74°

52°

FRI

75°

57°

SAT

80°

62°

SUN

98°

69°

MON

95°

76°

TUE

97°

64°

WED

97°

78°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

74°

mild

74°

73°

70°

66°

64°

62°

60°

59°

58°

57°

58°

57°

60°

63°

66°

70°

69°

72°

73°

71°

72°

75°

74°

73°

72°

69°

66°

65°

64°

63°

62°

63°

64°

66°

68°

70°

72°

78°

80°

76°

72°

71°

70°

69°

70°

72°

74°

76°

80°

85°

89°

91°

94°

96°

97°

98°

97°

94°

90°

87°

85°

83°

81°

80°

79°

78°

77°

78°

81°

83°

85°

89°

90°

93°

95°

93°

90°

85°

80°

78°

76°

74°

71°

70°

68°

67°

66°

64°

65°

70°

76°

82°

84°

WIND

mph · gust · dir

7mph ENE

G 8 mph

ENE

G11

G15

G13

ESE

G14

ESE

G14

ESE

G14

ESE

G13

ESE

G14

ESE

G14

ESE

G14

ESE

G13

G19

G20

SSE

G17

SSE

G16

SSW

G16

G18

SSE

G21

SSE

G20

SSE

G18

SSE

G21

G16

G17

G18

G19

SSE

G21

SSE

G22

SSE

G28

SSE

G31

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

SSE

G33

SSE

G33

SSE

G34

G32

SSE

G31

SSE

G26

SSE

G25

G24

G22

G20

SSW

G20

SSW

G20

SSW

G26

G32

G34

SSE

G38

G37

SSE

G37

SSE

G41

G40

G38

SSE

G38

G36

G37

G35

G34

G32

G30

SSW

G28

SSW

G24

SSW

G20

G19

WSW

G20

WSW

G21

WSW

G15

WNW

NNW

ENE

G12

G16

ESE

G19

ESE

G17

ESE

PRECIP

chance %

21%

36%

28%

19%

10%

20%

13%

18%

CLOUDS

cover %

100%

overcast

100%

78%

100%

70%

90%

100%

71%

63%

100%

50%

42%

13%

36%

20%

49%

36%

100%

37%

61%

68%

100%

53%

14%

81%

100%

94%

96%

74%

11%

42%

100%

26%

62%

85%

75%

51%

36%

42%

57%

70%

78%

PRESSURE

hPa · trend

956

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 DAYLIGHT3H 44M REMAINING

MOON PHASE

Waxing Gibbous

81% illuminated

Station Location

44.9424, -97.1463

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DATA · USGS · NOAA · NWSUPDATED 2026-06-25 17:35 UTC

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