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
82°F
WIND
5mph SW
FISH INDEX
69SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
—cfs
No flow data available
Precipitation History
Your History · LITTLE DIFFICULT RUN NEAR VIENNA, VA

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Weather Conditions
WEATHER CONDITIONS
TODAY
98°
73°
THU
104°
78°
FRI
103°
77°
SAT
99°
73°
SUN
100°
70°
MON
94°
71°
TUE
84°
74°
TIME
WED
2
NOW
3
pm
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
TEMP
hourly forecast
96°
mild
96°
98°
98°
98°
97°
96°
92°
89°
86°
84°
84°
83°
81°
81°
80°
79°
78°
81°
87°
90°
94°
97°
100°
101°
102°
103°
104°
104°
103°
102°
97°
92°
90°
89°
87°
84°
82°
81°
80°
79°
78°
79°
84°
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°
WIND
mph · gust · dir
4mph WSW
G 10 mph
4
G10
WSW
4
G10
SW
4
G10
SSW
6
G11
S
8
G12
S
7
G11
S
5
G11
SSW
4
G9
SW
4
G5
S
5
G13
S
6
G15
SSW
6
G14
SW
5
G12
SSW
5
G11
SW
4
G10
SW
4
G10
SW
4
G9
SW
3
G7
WSW
5
G14
WNW
7
G16
NW
6
G12
NNW
5
G7
N
3
G6
NNW
4
G6
WNW
5
G10
W
7
G11
WSW
6
G11
WSW
6
G11
WSW
6
G9
WSW
5
G10
SW
5
G9
S
4
G10
SSW
6
G8
WNW
5
S
3
G6
WNW
4
G7
W
3
G4
W
4
NNW
4
G9
NNW
5
G8
NNW
5
G7
NNW
3
G6
NNW
3
G4
NNW
4
G5
NW
4
G7
NW
4
G9
NW
6
G9
NW
6
G9
NW
5
G9
NNW
4
G10
NNW
6
G11
N
7
G11
N
4
G11
N
3
NNW
17
G19
WSW
17
G30
SW
12
G25
SSW
6
G15
NW
8
G11
NNW
8
G12
WNW
7
G22
NW
9
G24
NW
6
G24
NW
4
G18
NW
5
G11
WNW
5
G10
WNW
5
G9
NW
5
G7
NW
5
WNW
5
WNW
5
G6
NW
5
G6
NW
5
G7
NW
3
G10
WNW
2
G10
W
1
G8
SSE
5
G10
S
14
W
6
G16
W
2
G20
W
7
G22
NNW
5
G9
NNW
2
G3
WSW
0
G5
E
3
G4
NE
4
G6
SW
2
G3
W
1
G3
W
2
G3
NE
2
G3
SSW
2
G3
SW
3
SSW
4
SW
5
WSW
4
WSW
4
WSW
5
G6
W
4
G8
WNW
2
G10
W
26
G34
W
14
G16
W
9
G10
NW
5
NNW
7
N
4
G6
NNE
5
G9
SSW
5
G9
SE
5
G8
SSW
3
G7
WSW
2
G6
W
2
G4
WNW
3
NW
3
NW
2
G4
NW
2
G5
NW
PRECIP
chance %
1%
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%
0%
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%
CLOUDS
cover %
19%
few
19%
9%
7%
3%
1%
0%
0%
2%
3%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
12%
12%
5%
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%
PRESSURE
hPa · trend
1001
10011001100210041003100110021004100299910021002100099999999999899910001001
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 DAYLIGHT7H 8M REMAINING
MOON PHASE
Full Moon
97% illuminated
PEAK ACTIVITY

Station Location

38.9099, -77.3377
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-01 13:30 UTC
Site #01645745·USGS

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