Waterlands
Charles River
USGS · 01104500
CHARLES RIVER
USGS · 01104500LIVE

CHARLES RIVER AT WALTHAM, MA

WALTHAM, MA42.3723°N, -71.2337°W Updated 16 hr ago
FLOW RATE
87cfs
GAUGE HT
1.13ft
AIR TEMP
84°F
WIND
6mph NE
FISH INDEX
56SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 YEAR
87cfs 56.9% vs avg
Optimal band: 100–136 cfs
PERIOD HIGH
987cfs
PERIOD LOW
7cfs
RUNNABLE
28%
last 1 year in band

Gauge Height

1.13ft
Precipitation History
Your History · CHARLES RIVER AT WALTHAM, MA

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Weather Conditions
WEATHER CONDITIONS
TODAY
84°
61°
MON
88°
62°
TUE
100°
69°
WED
96°
80°
THU
90°
64°
FRI
73°
59°
SAT
84°
55°
TIME
SUN
5
NOW
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
5
am
6
am
7
am
8
am
9
am
10
am
11
am
TEMP
hourly forecast
82°
mild
82°
81°
79°
77°
74°
71°
69°
67°
66°
65°
64°
63°
62°
62°
68°
73°
77°
81°
84°
86°
86°
88°
88°
88°
87°
86°
84°
80°
75°
74°
70°
71°
70°
70°
71°
70°
69°
69°
73°
78°
83°
88°
91°
93°
96°
97°
99°
100°
100°
99°
96°
92°
89°
88°
87°
87°
86°
85°
84°
83°
81°
80°
82°
85°
88°
91°
92°
94°
96°
95°
95°
94°
94°
92°
90°
86°
84°
82°
81°
80°
79°
78°
77°
75°
73°
72°
75°
78°
82°
86°
89°
90°
84°
88°
83°
89°
84°
70°
73°
73°
69°
66°
64°
64°
63°
62°
61°
60°
59°
60°
63°
65°
68°
70°
72°
WIND
mph · gust · dir
9mph E
G 11 mph
9
G11
E
8
G10
E
8
G11
E
6
G12
ESE
6
G13
SE
3
G9
SSE
3
G10
S
3
G10
S
3
G10
S
2
G9
SSW
2
G9
SW
3
G11
SSW
4
G11
SW
2
G9
SW
6
G18
SW
9
G20
SW
8
G18
SW
9
G15
SSW
10
G14
SSW
10
G14
SSW
11
G15
SSW
13
G17
SSW
14
G20
SSW
14
G19
SSW
14
G20
SSW
15
G23
SSW
14
G23
SSW
14
G27
SSW
13
G28
SSW
13
G31
SSW
12
G25
SSW
11
G26
SSW
10
G25
SSW
8
G24
SW
8
G22
SW
8
G22
SW
8
G18
SW
7
G19
SW
9
G22
WSW
10
G22
WSW
10
G20
WSW
12
G19
WSW
12
G18
W
13
G19
W
14
G21
WSW
15
G22
W
15
G22
W
15
G23
W
14
G24
W
13
G24
W
11
G26
W
11
G26
W
11
G28
W
11
G30
W
12
G28
W
13
G31
W
12
G32
W
12
G30
WNW
11
G26
WNW
9
G23
WNW
8
G21
W
8
G23
WSW
9
G26
W
11
G21
WNW
12
G19
WNW
10
G17
NW
11
G19
NW
11
G25
NW
12
G25
NW
13
G28
NW
15
G26
NW
12
G21
NW
14
G22
NW
13
G22
WNW
10
G24
WNW
8
G22
WNW
7
G18
W
7
G24
W
8
G25
W
9
G24
W
8
G22
W
8
G25
W
8
G25
W
8
G24
W
7
G21
W
6
G19
WSW
8
G22
W
7
G17
W
7
G13
W
8
G14
W
11
G17
WSW
13
G19
W
12
G17
WSW
15
G23
SW
14
G21
SW
14
G20
SW
13
G20
NNW
3
G17
NNW
2
G5
NNW
1
G2
S
1
NNW
5
NNW
5
G17
NNW
4
G9
NNW
4
NW
3
WNW
3
WNW
4
G5
NW
4
G7
NW
6
G11
NW
8
G14
NNW
10
G16
NNW
10
G16
NNW
10
G14
NNW
9
G13
NNW
PRECIP
chance %
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
1%
2%
2%
2%
2%
3%
3%
4%
4%
10%
5%
5%
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%
2%
2%
2%
2%
2%
2%
3%
3%
3%
3%
3%
3%
11%
11%
11%
11%
11%
11%
5%
5%
5%
5%
5%
5%
1%
1%
1%
1%
1%
1%
2%
2%
2%
2%
2%
2%
3%
3%
3%
3%
3%
3%
1%
1%
1%
1%
1%
1%
1%
1%
1%
CLOUDS
cover %
2%
clear
2%
2%
1%
0%
0%
0%
0%
0%
2%
79%
100%
1%
0%
0%
0%
0%
10%
0%
9%
35%
18%
23%
26%
16%
8%
82%
100%
54%
60%
48%
9%
42%
49%
100%
100%
100%
70%
35%
81%
38%
100%
66%
100%
100%
9%
6%
6%
28%
0%
7%
100%
100%
11%
100%
7%
0%
0%
5%
0%
47%
0%
0%
6%
0%
0%
5%
100%
100%
100%
100%
100%
100%
94%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
0%
6%
6%
37%
0%
0%
0%
44%
100%
0%
100%
0%
7%
100%
10%
100%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
PRESSURE
hPa · trend
1020
10201021102110201017101710151012100710051006100610051006100610051004100910091011
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
56
Temperature
Too Hot
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:19 AM
SUNSET
08:21 PM
15H 2M OF DAYLIGHT
MOON PHASE
Waning Crescent
5% illuminated

Station Location

42.3723, -71.2337
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC
Site #01104500·USGS

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