USGS · 06111800

BIG SPRING CR

USGS · 06111800LIVE

Big Spring Cr at R&B Trading Post nr Lewistown MT

FERGUS COUNTY, MT47.0878°N, -109.4575°W Updated 1 hr ago

FLOW RATE

170cfs

GAUGE HT

3.78ft

AIR TEMP

49°F

WIND

3mph S

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

170cfs 10.8% vs avg

Optimal band: 141–191 cfs

PERIOD HIGH

173cfs

PERIOD LOW

150cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

3.78ft

Precipitation History

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

72°

47°

THU

73°

54°

FRI

80°

55°

SAT

71°

51°

SUN

64°

47°

MON

65°

46°

TUE

76°

51°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

68°

mild

68°

70°

71°

72°

70°

67°

63°

61°

60°

58°

57°

56°

55°

56°

60°

63°

66°

68°

67°

68°

70°

71°

73°

58°

56°

54°

55°

57°

56°

55°

56°

58°

60°

61°

67°

72°

76°

75°

77°

80°

78°

62°

69°

65°

62°

57°

55°

53°

52°

53°

52°

51°

52°

56°

59°

61°

64°

69°

70°

71°

62°

54°

57°

55°

57°

56°

53°

52°

51°

50°

51°

50°

49°

52°

54°

57°

60°

63°

64°

63°

61°

54°

58°

59°

58°

52°

49°

47°

46°

47°

48°

WIND

mph · gust · dir

8mph E

G11

ESE

G14

ESE

G17

ESE

G22

ESE

G26

ESE

G25

ESE

G25

ESE

G25

ESE

G25

ESE

G25

ESE

G26

ESE

G26

ESE

G24

ESE

G26

ESE

G26

G28

ESE

G29

ESE

G27

ESE

G21

G10

SSW

G15

SSE

G12

ESE

G11

ESE

G15

ESE

G39

WNW

NNW

ENE

G11

ESE

G13

ESE

G15

ESE

G13

G19

G14

SSW

ESE

G11

SSW

WNW

G12

WNW

ESE

SSE

G13

WNW

G11

G10

NNW

G10

NNE

ENE

ESE

G18

WNW

SSE

WSW

SSW

WNW

G11

NNW

SSW

WSW

G14

PRECIP

chance %

10%

14%

17%

13%

25%

59%

13%

72%

91%

45%

20%

71%

55%

47%

60%

38%

36%

CLOUDS

cover %

10%

clear

10%

21%

26%

78%

82%

29%

76%

97%

98%

100%

33%

100%

97%

98%

94%

100%

77%

45%

100%

99%

90%

98%

99%

100%

95%

100%

81%

100%

65%

84%

98%

93%

22%

83%

100%

65%

26%

18%

100%

92%

100%

83%

79%

97%

100%

10%

73%

83%

64%

100%

89%

12%

83%

96%

29%

97%

32%

11%

100%

98%

100%

17%

19%

46%

69%

83%

93%

PRESSURE

hPa · trend

890

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Cool

Wind

Calm

Pressure

Rising — Slow

Moon Phase

Average

DAYLIGHT

SUNRISE

05:23 AM

SUNSET

09:17 PM

15H 54M OF DAYLIGHT8H 44M REMAINING

MOON PHASE

Waxing Gibbous

69% illuminated

Station Location

47.0878, -109.4575

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-06-24 12:33 UTC

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