Waterlands
Long Green Creek
USGS · 01584050
LONG GREEN CREEK
USGS · 01584050LIVE

LONG GREEN CREEK AT GLEN ARM, MD

TOWSON, MD39.4547°N, -76.4789°W Updated 46 min ago
FLOW RATE
2.89cfs
GAUGE HT
0.97ft
AIR TEMP
71°F
WIND
5mph NNE
FISH INDEX
63SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
2.89cfs 75.4% vs avg
Optimal band: 2–3 cfs
PERIOD HIGH
3.3cfs
PERIOD LOW
2.71cfs
RUNNABLE
70%
last 1 day in band

Gauge Height

0.97ft
Precipitation History
Your History · LONG GREEN CREEK AT GLEN ARM, MD

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Weather Conditions
WEATHER CONDITIONS
TODAY
83°
71°
MON
85°
68°
TUE
91°
66°
WED
98°
72°
THU
93°
77°
FRI
88°
72°
SAT
86°
67°
TIME
SUN
9
NOW
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
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
TEMP
hourly forecast
75°
mild
75°
75°
76°
79°
80°
82°
82°
83°
83°
83°
81°
78°
75°
73°
72°
71°
70°
69°
69°
70°
70°
68°
69°
73°
75°
77°
79°
81°
83°
84°
84°
85°
85°
84°
82°
78°
76°
75°
73°
72°
71°
69°
68°
68°
68°
66°
68°
72°
77°
80°
84°
86°
88°
90°
91°
90°
90°
89°
86°
82°
79°
78°
77°
76°
75°
74°
73°
72°
72°
72°
74°
78°
83°
87°
90°
93°
95°
96°
97°
98°
98°
97°
94°
90°
87°
86°
85°
84°
82°
80°
78°
77°
77°
77°
78°
81°
83°
86°
88°
90°
84°
88°
91°
93°
92°
91°
87°
82°
81°
81°
80°
78°
77°
75°
74°
73°
WIND
mph · gust · dir
8mph E
G 15 mph
8
G15
E
7
G13
E
7
G12
E
8
G12
E
7
G9
ESE
7
G8
ESE
6
G7
ESE
5
G6
ESE
6
G7
SE
5
G7
ESE
4
G7
ESE
6
G14
SSE
5
G13
SE
5
G10
SE
6
G12
SE
5
G11
SSE
4
G9
SSE
3
G7
SSE
3
G7
S
3
G6
SSW
2
G4
W
3
G4
W
2
NNW
1
G5
ENE
5
G7
SE
4
G5
SSE
3
G4
SSE
3
SSE
5
SE
6
G7
SE
6
G8
SE
7
G8
SE
7
G9
SSE
8
G11
SSE
7
G11
SSE
5
G13
SSE
5
G10
SSE
6
G12
S
6
G14
S
6
G14
SSW
5
G10
SSW
4
G8
SSW
3
G5
W
3
G6
W
4
G6
WNW
3
G5
NW
3
G5
NW
3
G6
NW
3
G5
W
3
G5
SW
5
G6
SW
5
G6
SW
5
G6
SW
5
G7
SSW
6
G8
SSW
5
G8
SSW
3
G8
SW
3
G8
SW
2
G6
WSW
2
G4
WNW
3
G5
WSW
5
G11
SW
5
G16
SW
6
G18
WSW
7
G21
WSW
7
G21
WSW
6
G19
W
6
G18
W
6
G15
W
5
G14
W
5
G18
W
6
G19
W
8
G16
W
9
G16
WNW
9
G13
WNW
9
G12
WNW
10
G13
WNW
10
G13
WNW
9
G13
WNW
9
G14
WNW
10
G14
WNW
10
G15
WNW
8
G17
WNW
7
G20
WNW
8
G25
WNW
9
G26
NW
9
G26
NW
8
G26
WNW
7
G20
NW
5
G8
NW
4
G5
NNW
3
G4
NNW
4
G5
NW
4
G5
NW
4
G11
NNW
5
G8
NNW
5
G7
NNW
5
G9
NNW
7
G11
NW
9
G14
NW
11
G15
NW
12
G17
NW
10
G18
NW
11
G19
NW
13
G19
NW
12
G18
NW
11
G22
NNW
11
G27
NNW
11
G27
NNW
11
G27
NNW
11
G26
NNW
9
G26
NNW
8
G26
NNW
7
G25
NNW
7
G24
NNW
7
G23
N
PRECIP
chance %
1%
1%
0%
0%
0%
1%
1%
0%
0%
0%
0%
0%
0%
1%
1%
1%
0%
0%
1%
1%
1%
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%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
2%
2%
2%
2%
2%
2%
5%
5%
5%
5%
5%
5%
4%
4%
4%
4%
4%
4%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
2%
2%
2%
2%
2%
2%
1%
1%
CLOUDS
cover %
76%
mostly
76%
100%
98%
51%
100%
100%
100%
100%
100%
100%
100%
100%
77%
80%
2%
0%
36%
98%
17%
100%
83%
33%
0%
1%
14%
7%
3%
3%
1%
0%
1%
1%
4%
4%
0%
0%
0%
0%
1%
25%
0%
1%
0%
0%
0%
0%
5%
5%
11%
100%
7%
17%
11%
43%
50%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
5%
6%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
6%
5%
6%
7%
0%
16%
28%
100%
100%
100%
100%
42%
15%
54%
100%
50%
43%
73%
70%
94%
81%
100%
100%
100%
100%
100%
100%
100%
100%
100%
PRESSURE
hPa · trend
1009
1009100810091009101110091008100910091006100410031002999998999100099910001002
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
63
Temperature
Warm
Wind
Light
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:49 AM
SUNSET
08:33 PM
14H 44M OF DAYLIGHT
MOON PHASE
Waning Crescent
6% illuminated

Station Location

39.4547, -76.4789
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 08:15 UTC
Site #01584050·USGS

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