USGS · 01589000

PATAPSCO RIVER

USGS · 01589000LIVE

PATAPSCO RIVER AT HOLLOFIELD, MD

BALTIMORE COUNTY, MD39.3103°N, -76.7924°W Updated 14 hr ago

FLOW RATE

31cfs

AIR TEMP

95°F

WIND

8mph WNW

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

31cfs 65.4% vs avg

Optimal band: 34–46 cfs

PERIOD HIGH

45cfs

PERIOD LOW

31cfs

RUNNABLE

75%

last 7 day in band

Precipitation History

Your History · PATAPSCO RIVER AT HOLLOFIELD, MD

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Weather Conditions

WEATHER CONDITIONS

TODAY

103°

80°

SUN

97°

75°

MON

80°

69°

TUE

74°

66°

WED

86°

61°

THU

92°

68°

FRI

93°

71°

TIME

SAT

NOW

SUN

MON

TUE

WED

THU

TEMP

hourly forecast

102°

mild

102°

103°

86°

83°

81°

80°

77°

76°

75°

76°

78°

83°

85°

89°

91°

94°

96°

97°

75°

78°

77°

76°

75°

74°

75°

73°

74°

76°

80°

73°

72°

75°

77°

78°

77°

74°

70°

69°

68°

67°

68°

69°

70°

71°

72°

74°

71°

70°

68°

67°

66°

65°

64°

63°

62°

61°

63°

66°

70°

74°

77°

80°

83°

84°

85°

86°

85°

84°

83°

79°

76°

75°

74°

72°

71°

70°

69°

68°

69°

70°

72°

76°

WIND

mph · gust · dir

8mph WSW

G 18 mph

G18

WSW

G17

WSW

G14

G51

G18

G12

WSW

NNW

G17

NNE

G15

NNW

G12

ESE

G16

WSW

G12

ESE

G11

SSE

G14

SSE

G13

SSE

G13

ESE

G31

WNW

G21

NNW

G17

ESE

G14

SSW

G13

NNW

G13

ENE

G10

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

PRECIP

chance %

13%

17%

39%

22%

17%

22%

25%

20%

14%

16%

23%

35%

47%

53%

82%

34%

62%

77%

71%

54%

26%

31%

27%

10%

CLOUDS

cover %

clear

16%

100%

75%

100%

97%

98%

100%

67%

46%

83%

34%

92%

12%

14%

100%

91%

100%

73%

100%

38%

100%

87%

100%

21%

11%

38%

84%

53%

100%

92%

100%

97%

100%

88%

72%

96%

100%

60%

63%

100%

11%

58%

PRESSURE

hPa · trend

1004

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Light

Pressure

Falling — Active

Moon Phase

Average

DAYLIGHT

SUNRISE

05:45 AM

SUNSET

08:37 PM

14H 52M OF DAYLIGHT

MOON PHASE

Waning Gibbous

78% illuminated

Station Location

39.3103, -76.7924

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

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