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 19 hr ago
FLOW RATE
3cfs
GAUGE HT
0.97ft
AIR TEMP
83°F
WIND
10mph ESE
FISH INDEX
44SCORE / 100
FAIR · 2 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 30 DAY
3cfs 52.1% vs avg
Optimal band: 3–3 cfs
PERIOD HIGH
11cfs
PERIOD LOW
2cfs
RUNNABLE
55%
last 30 day in band

Gauge Height

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

Track your history

Sign in to track your sessions at LONG GREEN CREEK AT GLEN ARM, MD — best days, monthly trends, and time on the water.

Sign in
SPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
84°
71°
MON
84°
66°
TUE
93°
67°
WED
99°
76°
THU
92°
73°
FRI
83°
65°
SAT
85°
61°
TIME
SUN
8
NOW
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
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
TEMP
hourly forecast
76°
mild
76°
74°
72°
71°
70°
70°
69°
68°
68°
67°
66°
68°
72°
75°
77°
79°
80°
82°
83°
84°
84°
84°
83°
82°
79°
76°
74°
73°
71°
70°
69°
68°
68°
67°
67°
69°
73°
77°
81°
85°
88°
90°
92°
93°
93°
93°
92°
90°
86°
83°
81°
81°
80°
79°
78°
77°
77°
77°
76°
77°
81°
85°
89°
92°
94°
96°
97°
99°
99°
99°
98°
95°
91°
87°
86°
84°
83°
79°
77°
75°
76°
74°
73°
75°
77°
81°
85°
87°
89°
90°
90°
90°
92°
90°
89°
86°
83°
80°
77°
77°
76°
74°
72°
70°
68°
65°
65°
65°
68°
71°
74°
77°
79°
80°
82°
WIND
mph · gust · dir
7mph ESE
G 18 mph
7
G18
ESE
6
G15
SE
7
G13
SE
5
G11
SE
4
G9
ESE
4
G8
SE
4
G7
SE
5
G8
SE
4
G7
SE
2
G6
SSE
3
G5
ENE
3
G6
ENE
2
G8
SE
4
G8
SSE
6
G7
SSE
6
G8
SSE
6
G7
SE
5
G6
SE
5
SE
5
G6
SE
7
G8
SE
7
G9
SE
5
G7
SE
5
G7
ESE
5
G10
SE
5
G11
SSE
6
G14
SSE
6
G13
SSE
5
G12
S
5
G13
SSW
4
G11
SSW
4
G11
SW
5
G11
WSW
4
G11
WSW
4
G9
WSW
4
G9
WSW
5
G11
WSW
6
G9
SW
5
G8
WSW
6
G8
SW
5
G8
WSW
6
G8
WSW
6
G9
SW
5
G9
WSW
5
G9
WSW
6
G9
W
7
G10
W
5
G11
WSW
6
G12
SW
5
G13
SW
5
G15
SW
6
G19
WSW
6
G21
WSW
7
G21
W
6
G16
W
5
G18
W
6
G22
WNW
6
G22
WNW
7
G23
W
7
G25
WNW
8
G24
WNW
9
G18
WNW
8
G15
WNW
9
G14
NW
10
G14
WNW
10
G14
WNW
10
G14
WNW
10
G15
WNW
12
G15
WNW
12
G17
WNW
11
G17
NW
8
G18
NW
7
G18
WNW
6
G20
WNW
6
G21
WNW
6
G17
WNW
5
G13
NW
6
G12
N
5
G7
N
3
G5
N
2
G3
NW
3
G4
WNW
4
G5
NW
4
G8
WNW
5
G9
WNW
4
G8
WNW
4
G9
WNW
5
G11
WNW
9
G14
WNW
12
G16
NW
11
G19
NW
13
G19
NW
12
G19
NW
13
G19
NW
11
G17
NW
10
G20
WNW
12
G23
WNW
10
G21
NW
9
G25
NW
11
G30
NNW
11
G30
NNW
10
G24
NNW
9
G27
NNW
9
G24
NNW
8
G21
NNW
7
G21
NNW
8
G25
NNW
9
G23
NNW
10
G21
NNW
10
G19
NNW
10
G17
N
10
G15
N
10
G15
N
11
G16
NNW
11
G16
NNW
PRECIP
chance %
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%
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%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
5%
5%
5%
5%
5%
5%
3%
3%
3%
3%
3%
3%
1%
1%
1%
1%
1%
1%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
3%
3%
3%
3%
3%
3%
2%
2%
2%
2%
2%
2%
CLOUDS
cover %
10%
clear
10%
1%
0%
2%
6%
28%
7%
13%
15%
14%
14%
2%
4%
6%
8%
1%
0%
0%
0%
0%
0%
0%
0%
0%
1%
2%
0%
0%
3%
34%
0%
0%
0%
0%
3%
4%
5%
6%
6%
0%
6%
6%
6%
6%
0%
0%
0%
0%
0%
0%
7%
37%
6%
6%
0%
0%
0%
7%
70%
96%
39%
73%
100%
100%
63%
8%
5%
0%
89%
7%
6%
11%
8%
100%
100%
100%
100%
0%
100%
100%
100%
100%
100%
100%
100%
100%
57%
100%
99%
99%
100%
100%
100%
100%
100%
100%
100%
100%
16%
7%
5%
13%
100%
11%
52%
6%
0%
0%
0%
0%
0%
0%
0%
0%
0%
PRESSURE
hPa · trend
1008
100810091011101010081008100810051002100210011000998999999998998100210041004
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
44
Temperature
Too Hot
Wind
Moderate
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:49 AM
SUNSET
08:33 PM
14H 44M OF DAYLIGHT
MOON PHASE
Waning Crescent
4% illuminated

Station Location

39.4547, -76.4789
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC
Site #01584050·USGS

Create a free account to save favorites, set flow alerts, and track conditions

Sign up free