USGS · 07021000

CASTOR RIVER

USGS · 07021000LIVE

Castor River at Zalma, MO

BOLLINGER COUNTY, MO37.1466°N, -90.0755°W Updated 1 hr ago

FLOW RATE

109cfs

GAUGE HT

1.38ft

AIR TEMP

84°F

WIND

7mph SSW

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

109cfs 60.5% vs avg

Optimal band: 94–126 cfs

PERIOD HIGH

116cfs

PERIOD LOW

107cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

1.38ft

Precipitation History

Your History · Castor River at Zalma, MO

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Weather Conditions

WEATHER CONDITIONS

TODAY

89°

68°

FRI

78°

72°

SAT

92°

72°

SUN

99°

71°

MON

99°

73°

TUE

100°

76°

WED

98°

77°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

89°

mild

89°

86°

82°

80°

78°

77°

76°

77°

73°

72°

74°

76°

77°

78°

77°

73°

77°

78°

75°

76°

75°

74°

75°

73°

72°

73°

72°

73°

75°

76°

75°

76°

83°

86°

90°

92°

89°

86°

83°

80°

77°

75°

74°

73°

72°

71°

74°

79°

84°

89°

93°

95°

98°

99°

98°

97°

94°

89°

83°

82°

80°

78°

77°

76°

75°

74°

73°

76°

81°

86°

91°

94°

97°

98°

99°

98°

97°

95°

91°

85°

83°

82°

80°

79°

78°

77°

76°

78°

82°

87°

92°

WIND

mph · gust · dir

9mph SSW

G 11 mph

G11

SSW

G12

SSW

G17

G15

G10

SSE

ESE

G15

SSE

G20

G19

WNW

G12

SSW

G12

WSW

G11

ESE

G13

G14

G15

G13

G10

G14

SSE

G13

G12

SSE

G27

G19

G18

SSW

G14

G19

SSE

G13

G22

SSW

G27

G13

WSW

G23

G21

G17

WSW

G13

WSW

G11

WSW

SSW

G13

G10

G11

SSW

G11

SSW

G11

G13

G17

G22

SSW

G19

SSW

G22

SSW

G21

SSW

G12

ENE

G17

ESE

G18

G15

G10

SSW

G11

G16

G15

G16

G17

G14

G12

SSW

G13

SSW

G13

SSW

G15

SSW

G15

SSW

G20

SSW

G22

G23

SSW

G25

SSW

G25

SSW

G24

G22

G20

WSW

G17

WSW

G12

WSW

SSW

G11

G14

G15

G11

SSW

WSW

SSW

PRECIP

chance %

10%

18%

22%

32%

46%

42%

23%

35%

24%

18%

17%

24%

28%

36%

33%

38%

34%

20%

19%

32%

17%

32%

36%

24%

47%

35%

31%

42%

15%

CLOUDS

cover %

86%

mostly

86%

100%

98%

100%

92%

77%

100%

93%

62%

82%

100%

48%

80%

28%

15%

100%

65%

35%

10%

74%

100%

53%

10%

11%

14%

10%

11%

25%

45%

57%

PRESSURE

hPa · trend

1001

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Light

Pressure

Falling — Active

Moon Phase

Average

DAYLIGHT

SUNRISE

05:41 AM

SUNSET

08:24 PM

14H 43M OF DAYLIGHT3H 37M REMAINING

MOON PHASE

Waxing Gibbous

80% illuminated

Station Location

37.1466, -90.0755

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DATA · USGS · NOAA · NWSUPDATED 2026-06-25 16:47 UTC

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