Waterlands
Seneca Creek
USGS · 01645000
SENECA CREEK
USGS · 01645000LIVE

SENECA CREEK AT DAWSONVILLE, MD

MONTGOMERY COUNTY, MD39.1281°N, -77.3358°W Updated 3 hr ago
FLOW RATE
102cfs
AIR TEMP
75°F
WIND
3mph SE
FISH INDEX
81SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
102cfs 46.1% vs avg
Optimal band: 4561 cfs
PERIOD HIGH
416cfs
PERIOD LOW
32cfs
RUNNABLE
40%
last 1 year in band
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

22.9in

≈ normal

22.88 in of precipitation so far this year — about average for this point in the season (normal 22.09 in).

YTD Total

22.9in

This year so far

Normal to Date

22.1in

30-yr average

Typical Range

17.3–29.4in

10th–90th pct YTD

Departure

+4%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 2.69" · normal 3.11" (1.8–4.8)
Jan
Feb: 2.29" · normal 2.79" (1.7–4.6)
Feb
Mar: 4.23" · normal 3.82" (1.7–5.2)
Mar
Apr: 3.14" · normal 3.54" (1.9–5.0)
Apr
May: 4.94" · normal 3.85" (1.9–6.3)
May
Jun: 3.24" · normal 3.69" (1.7–6.3)
Jun
Jul: 2.36" (so far)· normal 4.04" (2.0–6.8)
Jul
Aug: normal 3.52" (2.0–5.3)
Aug
Sep: normal 4.77" (1.5–8.5)
Sep
Oct: normal 3.52" (1.1–5.4)
Oct
Nov: normal 2.99" (1.4–4.8)
Nov
Dec: normal 3.55" (1.8–5.6)
Dec
Baseline 19912020 · Source: Open-Meteo01:18 AM
Your History · SENECA CREEK AT DAWSONVILLE, MD

Track your history

Sign in to track your sessions at SENECA CREEK AT DAWSONVILLE, MD — best days, monthly trends, and time on the water.

Sign in
SPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
82°
72°
THU
87°
72°
FRI
90°
69°
SAT
83°
70°
SUN
84°
65°
MON
83°
61°
TUE
84°
60°
TIME
THU
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
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
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
TEMP
hourly forecast
73°
mild
73°
72°
72°
72°
74°
75°
77°
80°
82°
81°
83°
84°
82°
85°
87°
77°
78°
76°
75°
74°
73°
73°
72°
71°
70°
70°
69°
69°
70°
75°
80°
84°
86°
88°
89°
90°
90°
90°
84°
80°
76°
75°
74°
73°
73°
72°
72°
71°
71°
70°
70°
70°
72°
75°
78°
80°
81°
82°
83°
78°
75°
74°
74°
73°
73°
73°
71°
71°
70°
70°
70°
69°
69°
69°
69°
68°
70°
71°
73°
74°
76°
79°
81°
82°
84°
84°
78°
76°
77°
74°
71°
69°
65°
64°
63°
62°
62°
61°
61°
61°
63°
67°
71°
74°
77°
79°
80°
82°
82°
83°
82°
79°
75°
72°
69°
66°
WIND
mph · gust · dir
3mph S
G 8 mph
3
G8
S
3
G9
SSE
3
G7
ESE
4
G11
SSE
5
G15
S
6
G12
S
6
G12
SSW
7
G11
SSW
7
G9
SSW
6
G8
SSW
4
G7
SSW
5
G7
SSW
5
G9
SW
6
G10
SSW
5
G7
W
5
G6
SE
0
G6
SW
7
G15
WSW
4
G9
W
1
G6
SSE
4
G6
SSW
4
G8
WSW
5
G10
WSW
5
G11
W
2
G9
W
3
G6
SW
3
G6
SW
1
G3
E
2
G7
SSW
5
G9
SSW
4
G12
WSW
6
G14
SW
5
G11
SW
5
G9
SW
7
G15
SSW
9
G13
SSW
9
G14
S
8
G11
S
9
G13
NW
6
G10
ENE
5
G7
SE
4
G8
W
3
G4
WSW
3
WSW
3
G4
WSW
4
G5
WSW
5
WSW
4
G5
W
4
W
5
G8
WNW
6
G12
WNW
4
G11
WNW
4
G13
WNW
7
G11
NW
7
G9
NW
6
G7
NW
7
NW
5
G6
WNW
7
G8
WNW
8
G10
WNW
7
G13
WNW
5
G11
WNW
4
G6
WNW
5
G9
NNW
4
G11
NNE
5
G10
N
5
G9
NNE
6
G14
NNE
5
G10
NNE
5
G10
NE
5
G7
N
4
N
5
G6
NNE
5
G8
NE
5
G6
NNE
5
G9
NE
5
G14
NE
7
G17
NE
8
G16
NE
10
G16
ENE
10
G16
ENE
11
G14
E
12
G15
E
11
G14
ESE
11
G13
ESE
11
G12
ESE
9
G18
ESE
9
G19
ESE
10
G19
ESE
10
G21
ESE
9
G22
ESE
8
G22
ESE
6
G19
ESE
5
G11
E
5
G9
E
4
G5
ENE
4
G5
NE
5
G7
NE
5
G7
NE
5
G8
NNE
5
G13
NNE
7
G12
NE
7
G13
ENE
8
G13
E
9
G13
E
10
G14
E
10
G14
E
10
G13
E
10
G13
E
9
G12
E
9
G11
E
8
G11
E
7
G9
ESE
6
G9
ESE
6
G9
ESE
6
G11
ESE
PRECIP
chance %
6%
6%
8%
15%
14%
15%
13%
9%
5%
6%
11%
18%
20%
28%
37%
36%
41%
40%
29%
15%
9%
5%
5%
4%
3%
3%
2%
2%
1%
1%
1%
1%
1%
3%
3%
3%
3%
62%
62%
62%
62%
62%
62%
32%
32%
32%
32%
32%
32%
10%
10%
10%
10%
10%
10%
24%
24%
24%
24%
24%
24%
49%
49%
49%
49%
49%
49%
17%
17%
17%
17%
17%
17%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
12%
12%
12%
12%
12%
12%
3%
3%
3%
3%
3%
3%
4%
4%
4%
4%
4%
4%
3%
3%
3%
3%
3%
3%
4%
4%
4%
4%
4%
4%
4%
4%
CLOUDS
cover %
10%
clear
10%
2%
12%
100%
100%
100%
65%
37%
95%
100%
100%
100%
100%
100%
88%
100%
88%
100%
10%
9%
7%
3%
0%
0%
0%
1%
100%
98%
3%
53%
86%
60%
100%
16%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
96%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
36%
6%
6%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
5%
5%
5%
4%
3%
1%
0%
0%
0%
PRESSURE
hPa · trend
1006
10061006100410031003100410021005100510061005100610071010101010131015101810161016
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
81
Temperature
Warm
Wind
Calm
Pressure
Stable
Moon Phase
Good
DAYLIGHT
SUNRISE
05:51 AM
SUNSET
08:37 PM
14H 46M OF DAYLIGHT
MOON PHASE
Last Quarter
32% illuminated

Station Location

39.1281, -77.3358
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC
Site #01645000·USGS

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