USGS · 01645745

LITTLE DIFFICULT RUN

USGS · 01645745LIVE

LITTLE DIFFICULT RUN NEAR VIENNA, VA

RESTON, VA38.9099°N, -77.3377°W

AIR TEMP

98°F

WIND

6mph W

FISH INDEX

56SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

—cfs

No flow data available

Precipitation History

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Weather Conditions

WEATHER CONDITIONS

TODAY

100°

77°

FRI

105°

78°

SAT

101°

71°

SUN

94°

69°

MON

88°

68°

TUE

84°

69°

WED

83°

67°

TIME

THU

NOW

FRI

SAT

SUN

MON

TUE

TEMP

hourly forecast

99°

mild

99°

95°

90°

87°

86°

85°

84°

82°

81°

80°

79°

78°

81°

86°

90°

94°

97°

99°

101°

102°

104°

105°

104°

103°

99°

95°

92°

89°

87°

85°

83°

81°

80°

79°

81°

85°

88°

91°

94°

96°

99°

101°

97°

77°

79°

76°

71°

72°

73°

71°

70°

69°

70°

71°

73°

77°

81°

84°

88°

90°

92°

93°

94°

93°

79°

69°

71°

70°

71°

70°

71°

70°

69°

70°

72°

73°

76°

78°

76°

83°

85°

87°

88°

82°

76°

68°

69°

68°

69°

70°

69°

70°

72°

74°

77°

79°

82°

84°

WIND

mph · gust · dir

4mph WSW

G 9 mph

WSW

SSW

G12

SSW

G11

WNW

G13

WNW

G11

WNW

G13

WNW

G12

G11

WNW

G10

G15

WSW

G11

G12

WSW

G12

WSW

G15

WSW

G15

WSW

G14

G25

WSW

G10

G12

WNW

G10

WNW

G10

WNW

WSW

G10

WNW

G11

WNW

G11

WNW

G12

NNW

G12

G10

NNW

G10

NNW

G11

NNW

G13

NNW

G15

ENE

G13

ENE

G26

G21

G17

SSW

G12

G11

SSW

NNW

G12

SSW

G13

SSW

G10

SSE

ESE

ENE

NNE

ESE

SSE

NNE

G12

SSE

G13

G12

SSE

G10

G11

NNE

G20

ESE

G23

SSE

G22

SSW

WSW

G10

SSW

WSW

SSW

WNW

PRECIP

chance %

57%

49%

74%

67%

25%

21%

68%

56%

30%

16%

CLOUDS

cover %

clear

96%

100%

39%

19%

12%

96%

100%

21%

72%

75%

23%

25%

30%

85%

84%

100%

79%

100%

92%

100%

21%

84%

82%

95%

78%

86%

20%

100%

54%

60%

69%

85%

92%

77%

52%

PRESSURE

hPa · trend

1002

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Light

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:48 AM

SUNSET

08:38 PM

14H 50M OF DAYLIGHT1H 58M REMAINING

MOON PHASE

Waning Gibbous

92% illuminated

Station Location

38.9099, -77.3377

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DATA · USGS · NOAA · NWSUPDATED 2026-07-02 18:40 UTC

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