USGS · 13127000

BIG LOST RIVER

USGS · 13127000LIVE

Big Lost River below Mackay Reservoir, near Mackay, ID

CUSTER COUNTY, ID43.9392°N, -113.6483°W Updated 14 hr ago

FLOW RATE

439cfs

GAUGE HT

2.65ft

AIR TEMP

75°F

WIND

9mph SE

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

439cfs 31.7% vs avg

Optimal band: 399–539 cfs

PERIOD HIGH

532cfs

PERIOD LOW

411cfs

RUNNABLE

100%

last 30 day in band

Gauge Height

2.65ft

Precipitation History

Your History · Big Lost River below Mackay Reservoir, near Mackay, ID

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Weather Conditions

WEATHER CONDITIONS

TODAY

94°

64°

MON

92°

67°

TUE

87°

67°

WED

86°

64°

THU

86°

64°

FRI

86°

64°

SAT

89°

70°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

94°

mild

94°

93°

92°

91°

88°

82°

78°

76°

74°

72°

71°

70°

69°

68°

67°

68°

72°

76°

80°

84°

87°

90°

91°

92°

91°

92°

91°

88°

86°

82°

79°

77°

76°

73°

70°

69°

68°

67°

70°

73°

75°

79°

82°

83°

85°

84°

85°

87°

84°

77°

75°

73°

67°

66°

68°

67°

66°

67°

64°

68°

70°

73°

77°

78°

80°

83°

82°

86°

82°

77°

83°

81°

77°

75°

73°

70°

69°

67°

66°

64°

68°

72°

75°

77°

80°

82°

83°

80°

85°

86°

71°

70°

64°

65°

64°

65°

66°

65°

64°

66°

WIND

mph · gust · dir

14mph S

G 26 mph

G26

G24

WSW

G24

WSW

G23

WSW

G20

WSW

G14

WSW

G14

G22

WNW

G24

WNW

G25

WNW

G18

G16

WNW

G16

WNW

G16

WNW

G14

WNW

G13

WNW

G15

WNW

G16

G13

WNW

G13

ESE

G16

SSE

G15

G13

G12

WSW

G14

WSW

G17

G14

G10

NNW

G10

G19

WNW

G15

G14

G12

G10

WNW

G12

G15

SSW

G11

G13

WSW

G11

WSW

WNW

G15

G13

WNW

ESE

NNE

WNW

SSE

G11

SSW

G12

WNW

NNE

ESE

G12

G14

G11

G18

SSE

G13

SSE

G13

SSW

G13

WNW

G11

ESE

G14

ESE

PRECIP

chance %

21%

17%

27%

15%

33%

13%

35%

31%

CLOUDS

cover %

100%

overcast

100%

93%

100%

74%

100%

98%

74%

100%

91%

96%

73%

100%

62%

78%

100%

79%

100%

19%

100%

96%

55%

100%

90%

100%

96%

86%

100%

78%

82%

100%

64%

100%

42%

55%

81%

100%

85%

PRESSURE

hPa · trend

824

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Light

Pressure

Rising — Slow

Moon Phase

Average

DAYLIGHT

SUNRISE

06:03 AM

SUNSET

09:16 PM

15H 13M OF DAYLIGHT

MOON PHASE

Waning Crescent

5% illuminated

Station Location

43.9392, -113.6483

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

Site #13127000·USGS

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