Waterlands
Old Courthouse Spring Branch
USGS · 01645844
OLD COURTHOUSE SPRING BRANCH
USGS · 01645844LIVE

OLD COURTHOUSE SPRING BRANCH NEAR VIENNA, VA

RESTON, VA38.9390°N, -77.2576°W
AIR TEMP
84°F
WIND
4mph SW
FISH INDEX
63SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
cfs
No flow data available
Precipitation History
Your History · OLD COURTHOUSE SPRING BRANCH NEAR VIENNA, VA

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Weather Conditions
WEATHER CONDITIONS
TODAY
103°
77°
SUN
96°
71°
MON
82°
69°
TUE
91°
70°
WED
81°
65°
THU
74°
70°
FRI
90°
69°
TIME
SAT
6
NOW
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
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
TUE
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
WED
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
THU
12
am
TEMP
hourly forecast
80°
mild
80°
82°
85°
89°
92°
95°
98°
100°
101°
102°
103°
102°
82°
81°
81°
78°
77°
77°
77°
77°
76°
76°
75°
75°
74°
75°
78°
80°
83°
85°
88°
90°
93°
95°
96°
95°
95°
77°
72°
71°
71°
71°
70°
70°
69°
70°
70°
70°
70°
70°
71°
72°
74°
74°
72°
73°
73°
74°
80°
81°
82°
81°
78°
76°
75°
73°
72°
72°
72°
71°
71°
70°
70°
71°
74°
77°
81°
85°
87°
89°
90°
91°
91°
90°
88°
81°
77°
75°
74°
73°
72°
71°
70°
69°
67°
66°
65°
65°
67°
69°
72°
75°
78°
79°
81°
81°
81°
80°
79°
78°
78°
77°
76°
75°
74°
WIND
mph · gust · dir
4mph NW
G 11 mph
4
G11
NW
3
G8
NW
4
G10
NW
5
G11
W
7
G13
WNW
8
G12
WNW
7
G9
WNW
6
G9
WNW
6
G12
W
8
G17
WSW
7
G17
SW
7
G17
SW
6
G14
N
6
G18
WNW
10
G18
SSE
1
G4
NNW
6
G13
NW
4
SSE
3
G8
WSW
4
G10
WNW
6
G13
NW
5
G9
E
7
G11
SE
4
G7
NNE
2
G6
N
6
G11
SSE
3
G11
SSE
4
G8
SE
3
G6
SE
2
G4
E
2
G4
ENE
2
G7
NNE
3
G8
NNE
3
G9
ENE
4
G9
NE
7
G9
NE
7
G15
NE
16
G26
NNW
8
G24
NW
7
NE
4
G10
E
4
G12
SSE
5
G6
ESE
1
G9
S
7
G20
E
6
G19
SSE
4
G8
SSW
3
SW
2
G3
WSW
1
G6
NE
1
G8
NE
3
G7
NNW
3
G7
N
3
N
2
G5
NW
1
G9
WNW
1
G7
WSW
4
SSE
3
SSW
4
W
2
G4
WSW
3
S
2
S
4
G7
SE
4
G8
ESE
1
G12
SE
4
G12
SSE
5
S
4
G10
SW
4
G13
SW
3
G12
WSW
3
G4
SW
4
SSW
3
SW
3
W
2
G4
NW
2
G8
NW
4
G12
NW
5
G13
NW
7
G15
NW
8
G14
NW
7
G15
N
8
G15
NNE
6
G15
NNE
7
G17
NE
11
G21
ENE
9
G21
ENE
10
G22
ENE
8
G18
ENE
9
G13
ENE
7
G16
ENE
7
G13
NE
7
G11
NE
6
G14
NE
6
G18
NNE
6
G16
NNE
6
G14
NNE
6
G13
NE
5
G13
NE
5
G13
NE
5
G14
ENE
5
G13
ENE
4
G11
E
3
G11
SE
4
G10
SSE
4
G9
S
4
G8
S
4
G7
S
3
G5
SSE
3
SSE
3
SE
4
G5
SE
5
G9
SSE
7
G12
SSE
7
G15
SSE
PRECIP
chance %
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
4%
11%
16%
24%
18%
16%
29%
16%
23%
24%
22%
16%
16%
15%
9%
4%
3%
3%
2%
2%
2%
4%
2%
2%
68%
68%
68%
68%
68%
68%
64%
64%
64%
64%
64%
64%
44%
44%
44%
44%
44%
44%
46%
46%
46%
46%
46%
46%
73%
73%
73%
73%
73%
73%
75%
75%
75%
75%
75%
75%
30%
30%
30%
30%
30%
30%
17%
17%
17%
17%
17%
17%
48%
48%
48%
48%
48%
48%
34%
34%
34%
34%
34%
34%
15%
15%
15%
15%
15%
15%
11%
11%
11%
11%
11%
11%
19%
19%
19%
19%
19%
19%
26%
26%
26%
26%
CLOUDS
cover %
0%
clear
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
89%
23%
100%
100%
100%
100%
100%
100%
70%
100%
100%
100%
100%
79%
28%
70%
4%
85%
4%
13%
32%
100%
100%
100%
100%
31%
98%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
26%
34%
100%
100%
43%
68%
7%
22%
99%
5%
37%
45%
47%
43%
36%
20%
0%
0%
11%
63%
100%
0%
31%
5%
100%
98%
5%
10%
100%
100%
6%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
2%
23%
51%
72%
80%
80%
77%
68%
PRESSURE
hPa · trend
1002
10021003100110011000100299910041002100310001000999100099910011002100310011002
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
63
Temperature
Too Hot
Wind
Calm
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:49 AM
SUNSET
08:37 PM
14H 48M OF DAYLIGHT14H 52M REMAINING
MOON PHASE
Waning Gibbous
81% illuminated

Station Location

38.9390, -77.2576
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-04 05:45 UTC
Site #01645844·USGS

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