Waterlands
Little Difficult Run
USGS · 01645745
LITTLE DIFFICULT RUN
USGS · 01645745LIVE

LITTLE DIFFICULT RUN NEAR VIENNA, VA

RESTON, VA38.9099°N, -77.3377°W
AIR TEMP
85°F
WIND
6mph WSW
FISH INDEX
69SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
—cfs
No flow data available
Precipitation History
Your History · LITTLE DIFFICULT RUN NEAR VIENNA, VA

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Weather Conditions
WEATHER CONDITIONS
TODAY
100°
73°
THU
105°
77°
FRI
103°
77°
SAT
99°
73°
SUN
100°
70°
MON
94°
71°
TUE
84°
74°
TIME
WED
3
NOW
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
THU
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
FRI
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SAT
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SUN
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
MON
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
TEMP
hourly forecast
98°
mild
98°
99°
100°
97°
95°
92°
90°
88°
84°
83°
82°
80°
79°
78°
77°
77°
79°
86°
90°
93°
97°
99°
102°
103°
104°
105°
105°
104°
103°
97°
91°
89°
87°
87°
85°
83°
82°
82°
79°
79°
81°
85°
87°
91°
94°
97°
99°
101°
103°
103°
103°
102°
100°
88°
81°
77°
77°
75°
73°
73°
75°
75°
74°
73°
75°
78°
83°
87°
90°
93°
95°
97°
99°
99°
99°
97°
76°
78°
80°
77°
75°
75°
75°
75°
74°
73°
73°
72°
75°
78°
82°
87°
89°
93°
96°
98°
99°
100°
89°
70°
75°
74°
72°
73°
73°
73°
72°
72°
72°
71°
71°
72°
73°
75°
79°
WIND
mph · gust · dir
4mph WSW
G 13 mph
4
G13
WSW
4
G12
WSW
5
G12
SW
8
G13
S
7
G12
S
5
G9
SSW
4
G6
WSW
5
G6
W
5
SSE
5
G8
SSW
5
G9
SSW
4
G8
SSW
4
G7
S
4
G8
SSW
4
G10
SSW
4
G11
SW
2
G8
SW
3
G6
WSW
5
G15
WNW
6
G14
NW
7
G10
NW
5
G7
NW
4
G8
WNW
5
G7
W
5
G11
W
4
G11
WSW
7
G12
WSW
7
G11
WSW
5
G9
SW
5
G8
S
5
G12
SSW
3
G9
WSW
3
SSE
4
G7
WSW
3
G8
WSW
5
G8
WSW
5
G7
WSW
5
G6
SW
5
G7
SW
5
G6
WSW
4
G5
WNW
4
G6
NW
4
G6
NW
4
G6
NW
4
G6
NW
6
G8
NW
6
G10
NW
5
G10
NNW
4
G11
NNW
6
G12
N
7
G13
N
4
G10
N
3
G4
NNW
17
WSW
17
G27
SW
12
G26
SSW
6
G9
NW
8
G13
NNW
8
G23
WNW
7
G28
NW
9
G30
NW
6
G24
NW
4
G20
NW
5
G12
WNW
5
G12
WNW
5
G9
NW
5
G7
NW
5
WNW
5
WNW
5
NW
5
G6
NW
5
G7
NW
3
G7
WNW
2
G6
W
1
G3
SSE
5
G7
S
14
G36
W
6
G14
W
2
G9
W
7
G11
NNW
5
G9
NNW
2
G6
WSW
0
G2
E
3
G5
NE
4
G6
SW
2
G5
W
1
G2
W
2
NE
2
G3
SSW
2
G4
SW
3
G6
SSW
4
G6
SW
5
G6
WSW
4
G5
WSW
4
G5
WSW
5
G6
W
4
G6
WNW
2
G7
W
26
W
14
G41
W
9
G20
NW
5
G11
NNW
7
G13
N
4
G10
NNE
5
G8
SSW
5
G8
SE
5
G8
SSW
3
G4
WSW
2
G4
W
2
G4
WNW
3
G4
NW
3
G4
NW
2
G4
NW
2
G4
NW
3
G4
NW
PRECIP
chance %
1%
1%
1%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
4%
4%
4%
4%
4%
4%
7%
7%
7%
7%
7%
7%
3%
3%
3%
3%
3%
3%
4%
4%
4%
4%
4%
4%
25%
25%
25%
25%
25%
25%
40%
40%
40%
40%
40%
40%
6%
6%
6%
6%
6%
6%
4%
4%
4%
4%
4%
4%
58%
58%
58%
58%
58%
58%
52%
52%
52%
52%
52%
52%
15%
15%
15%
15%
15%
15%
9%
CLOUDS
cover %
2%
clear
2%
5%
3%
4%
0%
0%
12%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
8%
12%
13%
12%
12%
87%
100%
100%
100%
100%
19%
100%
100%
100%
100%
100%
100%
63%
100%
100%
100%
44%
75%
21%
22%
67%
22%
13%
9%
100%
100%
100%
100%
100%
68%
24%
100%
100%
14%
100%
100%
100%
92%
27%
21%
100%
25%
46%
26%
26%
100%
7%
100%
100%
100%
100%
100%
16%
70%
100%
100%
100%
97%
92%
94%
98%
100%
97%
PRESSURE
hPa · trend
1002
10021001100210041002100110021004100210011001100210009999999999989999991001
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
69
Temperature
Too Hot
Wind
Light
Pressure
Stable
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
05:47 AM
SUNSET
08:38 PM
14H 51M OF DAYLIGHT6H 6M REMAINING
MOON PHASE
Full Moon
97% illuminated
PEAK ACTIVITY

Station Location

38.9099, -77.3377
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-01 14:32 UTC
Site #01645745·USGS

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