Waterlands
Swan River
USGS · 01305500
SWAN RIVER
USGS · 01305500LIVE

SWAN RIVER AT EAST PATCHOGUE NY

TOWN OF BROOKHAVEN, NY40.7672°N, -72.9938°W Updated 20 min ago
FLOW RATE
9.86cfs
GAUGE HT
0.47ft
AIR TEMP
66°F
WIND
10mph N
FISH INDEX
75SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
9.86cfs 4.5% vs avg
Optimal band: 9–13 cfs
PERIOD HIGH
14.6cfs
PERIOD LOW
9.86cfs
RUNNABLE
80%
last 1 day in band

Gauge Height

0.47ft
Precipitation History
Your History · SWAN RIVER AT EAST PATCHOGUE NY

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Weather Conditions
WEATHER CONDITIONS
TODAY
72°
65°
WED
78°
63°
THU
78°
69°
FRI
90°
68°
SAT
86°
66°
SUN
81°
64°
MON
80°
66°
TIME
WED
3
NOW
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
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
TEMP
hourly forecast
64°
mild
64°
63°
64°
64°
66°
68°
70°
72°
74°
76°
77°
78°
76°
75°
75°
74°
73°
71°
71°
71°
71°
70°
70°
70°
70°
69°
69°
69°
72°
74°
75°
76°
77°
77°
78°
78°
78°
78°
77°
77°
75°
73°
72°
73°
73°
73°
73°
73°
73°
72°
71°
71°
73°
76°
78°
81°
84°
86°
88°
89°
90°
90°
88°
72°
70°
69°
69°
68°
68°
68°
68°
67°
67°
67°
67°
66°
68°
71°
73°
77°
79°
81°
83°
84°
85°
86°
85°
82°
77°
74°
73°
71°
70°
70°
68°
67°
66°
65°
65°
64°
67°
71°
74°
77°
79°
80°
81°
81°
80°
79°
78°
76°
73°
71°
71°
WIND
mph · gust · dir
6mph NNW
G 16 mph
6
G16
NNW
7
G18
NNW
7
G17
N
7
G18
N
8
G19
N
9
G17
N
8
G14
N
8
G13
N
7
G9
N
4
G6
N
5
G6
NW
2
G5
WNW
7
G9
SSW
10
G12
SSW
10
G13
SSW
10
G13
SW
9
G12
SSW
8
G13
SSW
9
G14
SSW
10
G15
SSW
11
G17
SSW
12
G19
SSW
12
G20
SW
12
G21
SW
11
G22
SW
11
G21
SW
11
G20
SW
10
G19
SW
10
G21
SW
11
G20
SW
12
G18
SW
11
G15
SW
11
G15
SSW
12
G17
SSW
13
G17
SSW
12
G16
SSW
14
G18
SSW
15
G20
SSW
15
G22
SSW
14
G23
SSW
12
G22
SSW
10
G22
SSW
6
G21
SSW
7
G22
SSW
4
G17
SW
2
G8
WNW
1
G2
NE
2
G3
S
2
G3
SSW
2
G3
NW
2
G4
W
3
G6
WNW
4
G9
WNW
5
G12
NW
6
G11
WNW
7
G11
NW
7
G11
NW
6
G8
NW
5
G8
NW
6
G10
WNW
5
G10
W
6
G9
SW
7
G19
SSW
14
G26
NNW
10
G22
N
6
G12
N
5
G10
ENE
4
G10
NE
3
G7
E
3
G7
NE
2
G4
ENE
3
G6
N
4
G9
NNW
4
G10
NNW
4
G10
NW
5
G14
N
7
G20
N
9
G21
NNE
10
G16
NNE
10
G15
NE
8
G12
NE
7
G11
NE
6
G10
NNE
6
G9
NNE
6
G10
N
6
G9
NNE
4
G8
ENE
6
SE
8
G10
SE
7
G13
SE
6
G14
SE
5
G14
ESE
5
G13
ESE
4
G11
ESE
3
G8
E
3
G8
ESE
3
G7
E
3
G6
ENE
3
G6
ENE
3
G6
NE
4
G7
NE
4
G7
ENE
4
G6
E
5
G6
ESE
6
ESE
7
SE
8
SE
9
SE
9
SE
9
SE
8
G10
SSE
8
G12
SSE
7
G14
SSE
7
G15
SSE
6
G15
SSE
PRECIP
chance %
1%
1%
1%
1%
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%
2%
2%
2%
2%
2%
2%
7%
7%
7%
7%
7%
7%
42%
42%
42%
42%
42%
42%
6%
6%
6%
6%
6%
6%
1%
1%
1%
1%
1%
1%
34%
34%
34%
34%
34%
34%
31%
31%
31%
31%
31%
31%
9%
9%
9%
9%
9%
9%
4%
4%
4%
4%
4%
4%
9%
9%
9%
9%
9%
9%
5%
5%
5%
5%
5%
5%
4%
4%
4%
4%
4%
4%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
3%
CLOUDS
cover %
6%
clear
6%
47%
63%
38%
6%
2%
5%
4%
4%
3%
2%
0%
0%
2%
1%
1%
1%
1%
0%
1%
0%
1%
4%
1%
60%
100%
33%
4%
14%
100%
88%
94%
6%
6%
9%
12%
12%
100%
100%
78%
71%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
86%
44%
53%
100%
38%
6%
0%
75%
100%
6%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
0%
1%
0%
0%
13%
0%
0%
70%
62%
5%
9%
100%
0%
0%
0%
0%
52%
100%
0%
0%
0%
0%
0%
0%
0%
39%
68%
100%
10%
93%
100%
100%
100%
100%
100%
100%
91%
80%
74%
80%
91%
100%
100%
PRESSURE
hPa · trend
1017
10171017101610151014101510131011100810091008101010111013101410161018102010201021
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
75
Temperature
Ideal
Wind
Moderate
Pressure
Stable
Moon Phase
Good
DAYLIGHT
SUNRISE
05:27 AM
SUNSET
08:25 PM
14H 58M OF DAYLIGHT
MOON PHASE
Last Quarter
43% illuminated

Station Location

40.7672, -72.9938
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-08 02:15 UTC
Site #01305500·USGS

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