USGS · 06479215

BIG SIOUX RIVER

USGS · 06479215LIVE

Big Sioux R nr Florence, SD

GRANT COUNTY, SD45.1808°N, -97.1866°W Updated 36 min ago

FLOW RATE

0.47cfs

GAUGE HT

2.22ft

AIR TEMP

57°F

WIND

12mph NW

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

0.47cfs 96.0% vs avg

Optimal band: 0–1 cfs

PERIOD HIGH

0.6cfs

PERIOD LOW

0.39cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

2.22ft

Precipitation History

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

69°

54°

THU

72°

52°

FRI

77°

55°

SAT

84°

60°

SUN

102°

70°

MON

99°

73°

TUE

88°

64°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

66°

mild

66°

67°

68°

69°

68°

69°

68°

66°

63°

60°

58°

57°

56°

55°

54°

53°

52°

54°

59°

62°

65°

67°

69°

70°

71°

72°

71°

68°

65°

63°

62°

61°

57°

55°

56°

55°

57°

62°

66°

64°

66°

68°

72°

76°

77°

75°

73°

72°

71°

70°

67°

68°

66°

63°

62°

61°

60°

61°

63°

66°

70°

74°

77°

80°

82°

84°

83°

81°

79°

75°

73°

71°

70°

71°

72°

74°

78°

82°

86°

90°

93°

95°

98°

100°

102°

99°

92°

87°

82°

84°

83°

82°

81°

79°

78°

77°

WIND

mph · gust · dir

15mph NW

G 21 mph

G21

G20

G19

G20

G19

G18

G17

G13

G12

G11

G13

NNW

G12

G10

WNW

G12

G10

NNW

G12

NNW

G14

NNW

G14

G13

G12

G10

NNW

ESE

G11

ESE

G14

ESE

G11

G12

SSE

G12

G13

G15

G14

G15

SSE

G14

G16

G17

SSE

G20

SSE

G21

SSE

G21

G22

G27

ESE

G31

ESE

G32

G34

G33

G32

SSE

G30

SSE

G34

SSE

G35

SSE

G34

SSE

G32

SSE

G32

SSE

G35

SSE

G36

SSE

G32

SSE

G30

SSE

G30

SSE

G29

SSE

G30

SSE

G30

SSE

G28

SSE

G28

SSE

G29

SSE

G32

G37

G35

G33

G32

G30

G27

G28

G30

G29

G27

G25

SSE

G24

SSE

G24

SSE

G25

G24

SSW

G23

SSW

G25

SSW

G26

SSW

G23

SSW

G15

WSW

G19

WSW

G25

SSE

G30

SSW

G34

G38

G40

G39

G38

G39

PRECIP

chance %

10%

15%

24%

31%

27%

21%

10%

36%

CLOUDS

cover %

32%

few

32%

37%

32%

100%

10%

100%

17%

24%

31%

19%

61%

100%

30%

100%

99%

100%

52%

23%

100%

82%

67%

100%

80%

100%

26%

100%

89%

24%

44%

66%

100%

97%

69%

33%

86%

100%

96%

95%

100%

83%

100%

88%

28%

PRESSURE

hPa · trend

955

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Ideal

Wind

Moderate

Pressure

Rising — Slow

Moon Phase

Average

DAYLIGHT

SUNRISE

05:42 AM

SUNSET

09:20 PM

15H 38M OF DAYLIGHT8H 44M REMAINING

MOON PHASE

Waxing Gibbous

69% illuminated

Station Location

45.1808, -97.1866

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-06-24 12:36 UTC

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