USGS · 06200000

BOULDER RIVER

USGS · 06200000LIVE

Boulder River at Big Timber MT

SWEET GRASS COUNTY, MT45.8338°N, -109.9387°W Updated 8 hr ago

FLOW RATE

619cfs

GAUGE HT

2.44ft

AIR TEMP

68°F

WIND

4mph N

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

619cfs 6.8% vs avg

Optimal band: 180–244 cfs

PERIOD HIGH

3,814cfs

PERIOD LOW

80cfs

RUNNABLE

22%

last 1 year 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

97°

68°

TUE

95°

67°

WED

93°

66°

THU

91°

66°

FRI

95°

68°

SAT

98°

70°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

80°

mild

80°

87°

92°

97°

101°

105°

107°

106°

105°

103°

98°

92°

88°

82°

78°

76°

74°

72°

71°

69°

68°

69°

75°

81°

85°

88°

90°

92°

94°

96°

97°

96°

93°

89°

81°

77°

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°

74°

WIND

mph · gust · dir

4mph NNW

G 6 mph

NNW

ESE

G14

G25

WSW

G21

SSW

G28

G26

WSW

G33

WSW

G26

WSW

G17

SSW

G12

SSW

G31

WSW

G12

WSW

NNE

G10

ENE

G12

ESE

G12

ESE

G12

G11

G13

G16

G13

ESE

G14

ENE

G15

ENE

ESE

SSE

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 %

11%

26%

11%

61%

65%

10%

33%

CLOUDS

cover %

clear

11%

34%

60%

100%

61%

100%

28%

88%

94%

12%

25%

100%

94%

35%

88%

58%

100%

28%

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%

69%

70%

PRESSURE

hPa · trend

876

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Calm

Pressure

Rising — Slow

Moon Phase

Average

DAYLIGHT

SUNRISE

05:42 AM

SUNSET

09:08 PM

15H 26M OF DAYLIGHT

MOON PHASE

Waning Crescent

6% illuminated

Station Location

45.8338, -109.9387

Loading map…

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

Site #06200000·USGS

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