USGS · 07021000

CASTOR RIVER

USGS · 07021000LIVE

Castor River at Zalma, MO

BOLLINGER COUNTY, MO37.1466°N, -90.0755°W Updated 22 min ago

FLOW RATE

107cfs

GAUGE HT

1.37ft

AIR TEMP

87°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

107cfs 60.5% vs avg

Optimal band: 94–126 cfs

PERIOD HIGH

116cfs

PERIOD LOW

107cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

1.37ft

Precipitation History

Your History · Castor River at Zalma, MO

Track your history

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

89°

68°

FRI

78°

72°

SAT

88°

72°

SUN

97°

71°

MON

98°

72°

TUE

97°

75°

WED

97°

77°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

88°

mild

88°

85°

82°

80°

78°

77°

74°

73°

72°

74°

76°

77°

78°

77°

73°

77°

78°

75°

76°

75°

74°

75°

73°

72°

73°

72°

73°

76°

79°

77°

81°

85°

75°

76°

87°

88°

85°

83°

78°

76°

75°

74°

73°

72°

71°

73°

77°

83°

88°

91°

95°

96°

97°

95°

91°

87°

82°

80°

77°

76°

75°

74°

73°

72°

75°

80°

85°

89°

93°

95°

98°

96°

95°

94°

89°

84°

82°

81°

80°

79°

77°

76°

75°

77°

81°

86°

90°

93°

95°

WIND

mph · gust · dir

10mph S

G 14 mph

G14

G16

G13

SSE

G10

G11

G12

SSE

G11

SSE

G13

ESE

G13

WNW

G24

ENE

ESE

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

SSW

G13

G10

SSW

G11

SSW

G11

SSW

G13

SSW

G17

SSW

G22

G19

SSW

G22

G21

SSE

G12

G17

SSE

G18

SSE

G15

G10

SSW

G11

G16

SSW

G15

SSW

G16

G17

G14

G12

G13

SSW

G13

SSW

G15

SSW

G15

SSW

G20

G22

G23

SSW

G25

SSW

G25

SSW

G24

SSW

G22

SSW

G20

SSW

G20

G17

G12

WSW

SSW

G11

G14

G15

G11

SSW

WSW

SSW

SSE

PRECIP

chance %

11%

16%

18%

19%

31%

33%

55%

53%

29%

40%

27%

18%

21%

43%

34%

36%

38%

30%

32%

21%

14%

28%

15%

46%

36%

21%

22%

47%

35%

31%

42%

15%

CLOUDS

cover %

12%

few

12%

97%

96%

88%

100%

89%

100%

92%

77%

100%

82%

100%

91%

100%

99%

100%

70%

54%

100%

97%

12%

91%

24%

29%

50%

40%

54%

50%

10%

11%

14%

15%

11%

10%

44%

100%

90%

14%

100%

73%

14%

10%

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 DAYLIGHT2H 17M REMAINING

MOON PHASE

Waxing Gibbous

81% illuminated

Station Location

37.1466, -90.0755

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-06-25 18:07 UTC

Site #07021000·USGS

Create a free account to save favorites, set flow alerts, and track conditions