USGS · 01589000

PATAPSCO RIVER

USGS · 01589000LIVE

PATAPSCO RIVER AT HOLLOFIELD, MD

BALTIMORE COUNTY, MD39.3103°N, -76.7924°W Updated 22 min ago

FLOW RATE

31.2cfs

GAUGE HT

1.39ft

AIR TEMP

91°F

WIND

6mph WNW

FISH INDEX

63SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

31.2cfs 68.6% vs avg

Optimal band: 28–37 cfs

PERIOD HIGH

33.8cfs

PERIOD LOW

31.2cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

1.39ft

Precipitation History

Your History · PATAPSCO RIVER AT HOLLOFIELD, MD

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Weather Conditions

WEATHER CONDITIONS

TODAY

103°

78°

SUN

98°

73°

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°

85°

82°

79°

78°

79°

78°

77°

76°

78°

81°

84°

86°

89°

92°

94°

96°

98°

73°

76°

75°

74°

73°

72°

71°

72°

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°

WIND

mph · gust · dir

7mph W

G 14 mph

G14

G17

WSW

G17

G14

G62

WSW

G14

NNE

G16

SSE

NNW

G10

G15

G11

NNW

NNE

G12

ESE

ENE

ESE

G11

ESE

G15

ESE

G15

ESE

G27

SSE

G20

G12

G16

ENE

G15

ENE

G12

G18

SSE

G19

SSE

G19

ESE

G16

G12

NNE

NNW

NNE

G15

G17

NNE

G17

G16

NNE

G10

NNE

G11

NNE

G11

G12

G14

G15

G17

G20

G19

G20

NNE

G20

G19

G18

G19

G18

G14

NNE

G11

ENE

G12

G11

SSE

NNE

SSE

G10

SSW

SSE

G11

G13

G15

G17

G20

G19

SSW

G16

SSW

G13

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%

CLOUDS

cover %

clear

95%

100%

57%

15%

100%

76%

100%

64%

100%

52%

100%

34%

60%

100%

48%

100%

21%

11%

38%

84%

53%

100%

92%

100%

97%

100%

88%

72%

96%

100%

60%

63%

100%

11%

58%

PRESSURE

hPa · trend

1005

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 DAYLIGHT7H 0M REMAINING

MOON PHASE

Waning Gibbous

78% illuminated

Station Location

39.3103, -76.7924

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DATA · USGS · NOAA · NWSUPDATED 2026-07-04 13:37 UTC

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