USGS · 01589025

PATAPSCO RIVER

USGS · 01589025LIVE

PATAPSCO RIVER NEAR CATONSVILLE, MD

MARYLAND39.2512°N, -76.7638°W Updated 15 hr ago

FLOW RATE

40cfs

AIR TEMP

98°F

WIND

7mph WNW

FISH INDEX

56SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

40cfs 46.8% vs avg

Optimal band: 64–86 cfs

PERIOD HIGH

1,427cfs

PERIOD LOW

39cfs

RUNNABLE

30%

last 1 year in band

Precipitation History

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Weather Conditions

WEATHER CONDITIONS

TODAY

103°

81°

SUN

98°

75°

MON

80°

69°

TUE

74°

66°

WED

86°

62°

THU

92°

69°

FRI

93°

72°

TIME

SAT

NOW

SUN

MON

TUE

WED

THU

TEMP

hourly forecast

103°

mild

103°

88°

87°

86°

83°

84°

82°

81°

80°

77°

76°

77°

78°

80°

84°

87°

90°

93°

95°

97°

98°

79°

78°

77°

76°

75°

74°

77°

80°

74°

72°

75°

78°

79°

78°

75°

71°

69°

68°

67°

68°

69°

71°

72°

74°

72°

70°

71°

69°

67°

66°

65°

64°

63°

62°

63°

67°

70°

74°

78°

81°

83°

85°

86°

85°

83°

80°

77°

75°

74°

73°

71°

70°

69°

71°

73°

76°

80°

WIND

mph · gust · dir

9mph WSW

G 17 mph

G17

WSW

G15

WSW

G14

G40

WSW

G35

SSW

G15

NNE

G13

NNW

NNE

G16

G11

G15

G10

ESE

SSE

G12

SSE

G10

SSE

G13

G12

G34

WNW

G24

G15

G17

G13

G10

NNE

G13

ENE

NNE

NNW

G14

G12

NNE

G10

NNE

G10

G13

G14

NNE

G12

NNE

G13

G10

NNE

G11

G12

NNE

G11

NNE

G13

G14

G13

NNE

G11

G12

NNE

G12

NNE

G12

NNE

G11

NNE

G12

NNE

G12

NNE

G13

NNE

G13

G16

G15

G14

G11

G10

NNE

G10

NNE

ENE

SSE

NNE

SSE

SSW

G10

G15

SSE

G16

SSE

G20

G22

G23

G22

G20

SSW

G19

SSW

G17

SSW

G16

SSW

G14

SSW

PRECIP

chance %

13%

17%

39%

23%

24%

18%

23%

27%

26%

20%

10%

14%

21%

22%

33%

48%

53%

43%

45%

75%

50%

59%

84%

71%

49%

24%

37%

20%

CLOUDS

cover %

clear

97%

100%

97%

44%

100%

61%

10%

78%

77%

11%

32%

95%

99%

100%

63%

100%

87%

98%

100%

21%

11%

38%

84%

53%

100%

92%

100%

97%

100%

88%

72%

96%

100%

60%

63%

100%

11%

58%

PRESSURE

hPa · trend

1008

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Light

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:46 AM

SUNSET

08:37 PM

14H 51M OF DAYLIGHT

MOON PHASE

Waning Gibbous

78% illuminated

Station Location

39.2512, -76.7638

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DATA · USGS · NOAA · NWSUPDATED 2026-07-04 00:00 UTC

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