USGS · 01104460

STONY BROOK

USGS · 01104460LIVE

STONY BROOK AT RT 20 AT WALTHAM, MA

WESTON, MA42.3690°N, -71.2706°W Updated 2 hr ago

FLOW RATE

24cfs

AIR TEMP

71°F

WIND

4mph SSW

FISH INDEX

81SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

24cfs 39.9% vs avg

Optimal band: 17–23 cfs

PERIOD HIGH

107cfs

PERIOD LOW

6cfs

RUNNABLE

32%

last 1 year in band

Precipitation History

Your History · STONY BROOK AT RT 20 AT WALTHAM, MA

Track your history

Sign in to track your sessions at STONY BROOK AT RT 20 AT WALTHAM, MA — best days, monthly trends, and time on the water.

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

83°

61°

THU

90°

66°

FRI

88°

68°

SAT

82°

65°

SUN

81°

60°

MON

89°

58°

TUE

92°

61°

TIME

THU

NOW

FRI

SAT

SUN

MON

TEMP

hourly forecast

67°

mild

67°

66°

67°

70°

75°

79°

82°

85°

88°

89°

90°

89°

86°

83°

80°

78°

76°

75°

74°

73°

72°

74°

76°

79°

83°

86°

87°

88°

87°

88°

87°

83°

80°

76°

70°

68°

67°

66°

65°

67°

69°

74°

77°

80°

81°

82°

81°

78°

74°

72°

70°

69°

66°

65°

64°

63°

62°

61°

60°

61°

65°

70°

73°

77°

79°

81°

80°

79°

78°

77°

76°

73°

69°

65°

63°

62°

61°

60°

59°

58°

59°

64°

70°

75°

79°

82°

85°

87°

88°

89°

88°

87°

83°

78°

74°

70°

WIND

mph · gust · dir

5mph SW

G 12 mph

G12

G13

WSW

G12

G13

WSW

G14

WSW

G17

WSW

G14

WSW

G13

WSW

G11

WSW

G13

WSW

G14

WSW

G15

WSW

G15

G17

G16

G20

SSW

G22

SSW

G23

SSW

G24

SSW

G22

SSW

G17

WSW

G15

SSE

G15

G17

G15

SSW

G16

G12

G14

WSW

G12

G13

G12

G15

G13

WNW

G13

WNW

G13

WNW

G10

WSW

SSW

ESE

NNE

NNW

G10

G12

G14

NNE

G11

NNE

G10

ENE

G10

G11

G14

G11

ESE

G15

ENE

NNE

G10

G11

NNE

G11

G10

ENE

G10

G11

ESE

WSW

SSW

G16

SSW

G20

SSW

G23

SSW

G25

SSW

PRECIP

chance %

10%

43%

12%

CLOUDS

cover %

clear

36%

27%

19%

100%

64%

100%

52%

100%

77%

44%

53%

13%

10%

18%

100%

76%

100%

24%

100%

13%

10%

69%

10%

12%

21%

26%

21%

10%

PRESSURE

hPa · trend

1008

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Calm

Pressure

Stable

Moon Phase

Good

DAYLIGHT

SUNRISE

05:16 AM

SUNSET

08:23 PM

15H 7M OF DAYLIGHT

MOON PHASE

Last Quarter

32% illuminated

Station Location

42.3690, -71.2706

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-07-09 00:00 UTC

Site #01104460·USGS

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