Waterlands
Sudbury River
USGS · 01097480
SUDBURY RIVER
USGS · 01097480LIVE

SUDBURY RIVER AT ASHLAND, MA

ASHLAND, MA42.2600°N, -71.4564°W Updated 1 hr ago
FLOW RATE
44cfs
AIR TEMP
63°F
WIND
10mph N
FISH INDEX
75SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 7 DAY
44cfs 103.7% vs avg
Optimal band: 33 cfs
PERIOD HIGH
44cfs
PERIOD LOW
2cfs
RUNNABLE
50%
last 7 day in band
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

20.9in

≈ normal

20.87 in of precipitation so far this year — about average for this point in the season (normal 21.63 in).

YTD Total

20.9in

This year so far

Normal to Date

21.6in

30-yr average

Typical Range

16.4–26.3in

10th–90th pct YTD

Departure

-3%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 3.20" · normal 3.36" (1.7–5.0)
Jan
Feb: 2.37" · normal 3.03" (1.7–4.5)
Feb
Mar: 4.75" · normal 4.23" (2.3–6.3)
Mar
Apr: 2.34" · normal 3.69" (1.9–5.9)
Apr
May: 2.79" · normal 3.04" (1.4–4.6)
May
Jun: 3.25" · normal 3.61" (1.5–6.2)
Jun
Jul: 2.17" (so far)· normal 3.11" (1.6–5.1)
Jul
Aug: normal 3.47" (1.4–5.9)
Aug
Sep: normal 3.55" (1.6–7.0)
Sep
Oct: normal 3.85" (1.3–6.2)
Oct
Nov: normal 3.40" (1.8–4.9)
Nov
Dec: normal 4.16" (2.3–6.7)
Dec
Baseline 19912020 · Source: Open-Meteo01:33 AM
Your History · SUDBURY RIVER AT ASHLAND, MA

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Weather Conditions
WEATHER CONDITIONS
TODAY
67°
62°
WED
85°
59°
THU
89°
69°
FRI
89°
67°
SAT
83°
59°
SUN
85°
57°
MON
85°
61°
TIME
WED
2
NOW
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
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
TEMP
hourly forecast
61°
mild
61°
61°
61°
59°
59°
63°
66°
68°
71°
75°
77°
79°
82°
83°
84°
85°
85°
83°
79°
75°
73°
71°
70°
70°
70°
70°
69°
69°
69°
73°
77°
81°
84°
86°
88°
89°
87°
84°
83°
80°
84°
81°
77°
72°
71°
70°
70°
70°
70°
69°
69°
68°
68°
71°
73°
77°
82°
85°
89°
89°
87°
82°
79°
75°
72°
72°
70°
68°
68°
67°
67°
66°
66°
66°
65°
64°
65°
65°
67°
73°
76°
79°
81°
82°
82°
83°
82°
78°
76°
72°
66°
62°
60°
59°
58°
58°
58°
58°
58°
57°
58°
63°
68°
74°
78°
80°
83°
85°
85°
83°
79°
76°
75°
74°
73°
WIND
mph · gust · dir
7mph NNW
G 20 mph
7
G20
NNW
7
G21
N
5
G13
N
5
G12
NNW
4
G12
NW
7
G15
NNW
5
G12
NNW
5
G12
N
4
G10
N
3
G9
NNW
4
G9
N
4
G9
NNW
5
G12
NNW
6
G13
NNW
6
G12
NNW
4
G10
WNW
5
G11
W
5
G10
WSW
4
G8
SW
4
G11
SSW
6
G9
SSE
4
G10
S
5
G14
SW
7
G14
SW
8
G16
SW
8
G16
WSW
8
G17
WSW
7
G15
WSW
7
G15
WSW
7
G20
WSW
8
G19
WSW
8
G17
WSW
8
G13
WSW
9
G13
WSW
9
G13
SW
10
G14
SW
8
G14
WSW
3
G7
WNW
4
G11
W
5
G12
SW
11
G19
SSW
12
G23
SW
10
G26
SW
8
G26
SW
7
G21
SSW
9
G26
SW
9
G26
SW
8
G25
SW
7
G24
SW
5
G17
SW
5
G18
SW
4
G16
WSW
4
G15
WSW
3
G12
W
4
G10
WNW
5
G9
NW
5
G7
NNW
5
G7
N
3
G8
NNW
5
G9
NW
5
G7
NNE
7
G11
ENE
6
G12
E
2
G6
NE
5
G10
ENE
3
G8
N
4
G6
W
3
W
2
WNW
2
WSW
2
WSW
3
NW
4
G9
NNW
5
G19
NNW
6
G25
N
5
G21
N
5
G22
N
6
G22
N
6
G22
NNE
10
G18
NNE
10
G15
NE
9
G12
NE
9
G10
NE
8
G9
NE
7
G8
NE
7
G9
ENE
9
G10
E
11
E
9
G12
E
7
G13
E
4
G5
E
3
G4
ESE
3
S
3
SSW
3
SW
3
WSW
3
WNW
3
W
3
W
2
W
1
G2
SW
0
S
0
G1
SE
1
G2
SSW
2
G4
SSW
4
G5
SSW
4
G5
SSW
4
G5
SW
4
G6
SSW
3
G6
S
4
G5
SE
5
G6
ESE
5
G10
SE
6
G15
S
8
G17
SSW
PRECIP
chance %
2%
2%
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%
5%
5%
5%
5%
5%
5%
11%
11%
11%
11%
11%
11%
4%
4%
4%
4%
4%
4%
8%
8%
8%
8%
8%
8%
56%
56%
56%
56%
56%
56%
33%
33%
33%
33%
33%
33%
8%
8%
8%
8%
8%
8%
5%
5%
5%
5%
5%
5%
11%
11%
11%
11%
11%
11%
6%
6%
6%
6%
6%
6%
4%
4%
4%
4%
4%
4%
3%
3%
3%
3%
3%
3%
2%
2%
2%
2%
2%
2%
CLOUDS
cover %
92%
overcast
92%
100%
35%
6%
50%
13%
7%
5%
4%
1%
0%
0%
0%
1%
3%
6%
9%
7%
0%
0%
2%
0%
0%
0%
0%
0%
0%
0%
0%
100%
100%
100%
100%
100%
77%
90%
100%
100%
100%
100%
100%
53%
32%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
96%
22%
34%
89%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
47%
100%
100%
100%
80%
28%
0%
5%
6%
0%
100%
100%
100%
91%
8%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
6%
12%
12%
10%
7%
23%
46%
66%
81%
94%
100%
PRESSURE
hPa · trend
1010
10101010100810071006100610031003100210021000100310041007100810101012101410121014
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
75
Temperature
Ideal
Wind
Moderate
Pressure
Stable
Moon Phase
Good
DAYLIGHT
SUNRISE
05:16 AM
SUNSET
08:24 PM
15H 8M OF DAYLIGHT
MOON PHASE
Last Quarter
43% illuminated

Station Location

42.2600, -71.4564
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-08 00:00 UTC
Site #01097480·USGS

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