USGS · 06200000

BOULDER RIVER

USGS · 06200000LIVE

Boulder River at Big Timber MT

SWEET GRASS COUNTY, MT45.8338°N, -109.9387°W Updated 1 hr ago

FLOW RATE

616cfs

GAUGE HT

2.44ft

AIR TEMP

75°F

WIND

1mph WNW

FISH INDEX

75SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

616cfs 43.0% vs avg

Optimal band: 568–768 cfs

PERIOD HIGH

689cfs

PERIOD LOW

616cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

2.44ft

Precipitation History

Your History · Boulder River at Big Timber MT

Track your history

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

107°

64°

MON

96°

68°

TUE

95°

67°

WED

93°

66°

THU

91°

66°

FRI

95°

68°

SAT

98°

70°

TIME

SUN

NOW

MON

TUE

WED

THU

TEMP

hourly forecast

67°

mild

67°

74°

82°

86°

91°

97°

101°

105°

107°

106°

102°

98°

91°

85°

81°

78°

76°

74°

73°

69°

68°

70°

75°

81°

86°

89°

91°

93°

94°

96°

95°

96°

95°

92°

83°

79°

76°

74°

73°

71°

68°

67°

72°

76°

80°

84°

87°

90°

93°

94°

95°

91°

87°

82°

78°

75°

72°

70°

68°

66°

69°

71°

75°

79°

82°

84°

88°

90°

93°

78°

70°

72°

69°

70°

69°

68°

69°

68°

67°

66°

68°

72°

76°

80°

82°

86°

89°

90°

91°

87°

81°

77°

75°

WIND

mph · gust · dir

2mph N

G 3 mph

ESE

G13

G27

G24

G23

WSW

G27

WSW

G32

WSW

G22

G20

G26

G28

G10

WSW

NNW

NNE

G10

G15

ESE

G15

ESE

G13

ESE

G13

G11

G12

G13

G16

G15

G21

G11

ENE

NNW

G10

G11

WSW

NNE

G20

NNE

G19

NNE

ENE

SSW

G12

NNE

G13

SSE

ESE

NNW

WSW

SSW

G11

WSW

NNW

SSW

WSW

G11

G12

G11

WSW

ENE

G11

ENE

NNE

PRECIP

chance %

16%

23%

11%

61%

62%

35%

40%

CLOUDS

cover %

clear

46%

28%

31%

50%

84%

100%

94%

31%

41%

22%

17%

32%

26%

83%

100%

89%

72%

97%

15%

50%

10%

100%

11%

14%

77%

48%

38%

82%

50%

64%

100%

59%

100%

97%

64%

52%

12%

46%

98%

100%

17%

88%

100%

98%

100%

31%

100%

99%

15%

100%

53%

36%

100%

16%

27%

39%

51%

62%

PRESSURE

hPa · trend

874

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Calm

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:42 AM

SUNSET

09:08 PM

15H 26M OF DAYLIGHT

MOON PHASE

Waning Crescent

7% illuminated

Station Location

45.8338, -109.9387

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-07-12 05:00 UTC

Site #06200000·USGS

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