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

CHARLES RIVER AT WALTHAM, MA

WALTHAM, MA42.3723°N, -71.2337°W Updated 10 hr ago
FLOW RATE
88cfs
GAUGE HT
1.13ft
AIR TEMP
61°F
WIND
6mph NNW
FISH INDEX
69SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 30 DAY
88cfs 67.4% vs avg
Optimal band: 43–59 cfs
PERIOD HIGH
126cfs
PERIOD LOW
33cfs
RUNNABLE
68%
last 30 day in band

Gauge Height

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

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Weather Conditions
WEATHER CONDITIONS
TODAY
82°
61°
MON
88°
61°
TUE
99°
68°
WED
97°
79°
THU
90°
69°
FRI
86°
63°
SAT
85°
63°
TIME
SUN
10
NOW
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
5
am
TEMP
hourly forecast
76°
mild
76°
79°
81°
82°
81°
80°
80°
79°
78°
78°
76°
72°
70°
69°
67°
65°
64°
63°
62°
61°
61°
67°
72°
77°
81°
84°
86°
87°
88°
88°
87°
87°
86°
83°
80°
77°
74°
73°
71°
70°
69°
69°
69°
68°
68°
71°
77°
82°
87°
91°
93°
96°
98°
98°
99°
99°
99°
96°
92°
90°
88°
87°
87°
86°
85°
83°
82°
82°
82°
83°
85°
87°
89°
91°
94°
96°
97°
91°
91°
93°
90°
87°
85°
84°
82°
79°
77°
76°
74°
73°
72°
71°
71°
73°
77°
82°
86°
88°
89°
90°
90°
83°
78°
84°
83°
78°
76°
73°
71°
69°
67°
66°
66°
64°
63°
63°
WIND
mph · gust · dir
8mph NE
G 10 mph
8
G10
NE
6
G8
NE
6
G7
NE
7
G9
ENE
11
G14
E
12
G14
E
11
G13
E
10
G12
E
9
G11
E
7
G10
E
6
G11
SE
5
G14
SE
3
G9
SSE
4
G10
SSE
3
G10
S
3
G10
SSW
3
G8
S
3
G8
S
2
G8
SW
5
G9
S
3
G8
SSE
5
G17
SW
6
G16
SW
8
G16
SW
8
G13
SW
9
G12
SW
11
G14
SSW
12
G15
SSW
12
G17
SSW
14
G19
SSW
14
G19
SSW
14
G21
SSW
14
G22
SSW
14
G24
SSW
13
G26
SSW
12
G28
SSW
11
G31
SSW
10
G29
SSW
10
G30
SSW
9
G26
SW
8
G26
SW
8
G26
SW
7
G24
SW
8
G25
SW
8
G24
SW
8
G24
SW
10
G20
SW
11
G19
WSW
11
G18
WSW
12
G19
WSW
14
G20
WSW
14
G22
WSW
15
G22
W
15
G23
W
15
G23
W
14
G24
WSW
13
G24
WSW
13
G27
WSW
12
G27
W
12
G28
W
11
G28
W
12
G28
W
13
G29
W
12
G29
W
11
G29
W
10
G28
W
10
G26
W
9
G24
W
9
G24
WSW
9
G24
W
12
G21
WNW
10
G19
WNW
10
G17
WNW
10
G16
WNW
9
G17
WNW
10
G23
NW
11
G21
WNW
9
G17
NW
9
G13
NW
10
G15
WNW
10
G17
WNW
9
G21
WNW
8
G22
WNW
9
G24
WNW
8
G22
WNW
7
G22
WNW
7
G23
WNW
8
G25
WNW
7
G22
W
7
G20
WSW
8
G25
WSW
7
G24
W
6
G17
W
8
G20
W
7
G14
W
6
G11
WNW
7
G11
WNW
9
G14
WNW
10
G19
W
11
G22
W
13
G24
W
18
G23
NNW
8
G25
NW
10
G17
WNW
13
G22
NW
9
G22
NW
5
G13
WNW
5
G12
WNW
5
G11
WNW
4
G10
WNW
4
G8
WNW
4
G5
WNW
4
WNW
4
G5
WNW
4
G8
WNW
4
G11
WNW
PRECIP
chance %
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%
3%
3%
4%
4%
4%
4%
2%
2%
2%
2%
2%
2%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
2%
2%
2%
2%
2%
2%
3%
3%
3%
3%
3%
3%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
4%
2%
2%
2%
2%
2%
2%
4%
4%
4%
4%
4%
4%
2%
2%
2%
2%
2%
2%
0%
0%
0%
CLOUDS
cover %
0%
clear
0%
9%
8%
15%
13%
7%
1%
1%
0%
2%
12%
7%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
9%
29%
69%
25%
100%
56%
100%
100%
100%
100%
0%
0%
0%
26%
61%
75%
100%
100%
100%
100%
100%
26%
100%
100%
15%
0%
0%
56%
8%
6%
0%
7%
100%
100%
100%
100%
0%
0%
5%
100%
100%
100%
100%
71%
100%
10%
11%
100%
100%
75%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
86%
100%
100%
0%
5%
0%
0%
0%
0%
0%
0%
31%
87%
100%
100%
100%
37%
100%
100%
61%
100%
100%
100%
100%
100%
70%
30%
0%
0%
0%
0%
PRESSURE
hPa · trend
1021
10211021102110211021101710161017101310081007100610061005100610061006100610081010
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
69
Temperature
Ideal
Wind
Light
Pressure
Rising — Slow
Moon Phase
Average
DAYLIGHT
SUNRISE
05:19 AM
SUNSET
08:21 PM
15H 2M OF DAYLIGHT
MOON PHASE
Waning Crescent
6% 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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