USGS · 01638500

POTOMAC RIVER

USGS · 01638500LIVE

POTOMAC RIVER AT POINT OF ROCKS, MD

FREDERICK COUNTY, MD39.2736°N, -77.5431°W Updated 30 min ago

FLOW RATE

2,000cfs

GAUGE HT

1.23ft

WATER TEMP

31°F

AIR TEMP

75°F

WIND

2mph WSW

FISH INDEX

75SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

2,000cfs 62.8% vs avg

Optimal band: 1,777–2,404 cfs

PERIOD HIGH

2,210cfs

PERIOD LOW

1,980cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

1.23ft

Water Temperature

31.4°F

Water Turbidity

Precipitation History

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Weather Conditions

WEATHER CONDITIONS

TODAY

96°

71°

MON

90°

73°

TUE

78°

69°

WED

75°

66°

THU

95°

67°

FRI

92°

71°

SAT

85°

68°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

72°

mild

72°

71°

73°

76°

79°

83°

86°

89°

91°

93°

94°

96°

83°

88°

86°

84°

82°

77°

75°

74°

73°

75°

77°

78°

80°

84°

86°

88°

90°

89°

78°

80°

78°

74°

73°

72°

71°

70°

69°

70°

71°

72°

74°

77°

78°

76°

78°

76°

74°

72°

70°

71°

70°

69°

68°

67°

66°

67°

68°

69°

71°

72°

74°

75°

74°

70°

69°

68°

69°

68°

67°

69°

73°

77°

81°

85°

87°

90°

92°

94°

95°

92°

87°

83°

80°

78°

76°

75°

WIND

mph · gust · dir

5mph NW

G 10 mph

G10

ENE

ESE

SSE

SSW

G31

WNW

G10

ESE

WSW

G15

SSE

G18

WNW

G16

SSW

G11

ESE

G13

WNW

ENE

ESE

G34

G15

ENE

G11

ENE

G11

G14

G17

ENE

G16

ENE

G11

ENE

NNE

G11

NNE

G11

NNE

G14

G13

NNE

G11

ENE

G11

ENE

G14

ENE

G15

ENE

G14

ENE

G14

ENE

G14

ENE

G15

ENE

G16

G15

ENE

G13

ENE

G12

ENE

G12

ENE

G10

ENE

ESE

SSE

SSW

WSW

G13

WSW

G14

WSW

G15

WSW

G16

G17

G16

G12

WSW

WNW

WSW

PRECIP

chance %

18%

25%

28%

35%

33%

31%

42%

32%

26%

15%

13%

10%

11%

10%

38%

61%

84%

48%

24%

57%

50%

21%

31%

21%

15%

12%

29%

17%

CLOUDS

cover %

76%

mostly

76%

80%

100%

45%

13%

60%

13%

100%

72%

100%

33%

88%

100%

99%

100%

45%

100%

84%

100%

99%

92%

96%

100%

90%

89%

72%

64%

100%

65%

30%

50%

67%

62%

64%

76%

100%

61%

19%

36%

48%

54%

56%

60%

71%

84%

94%

98%

99%

100%

PRESSURE

hPa · trend

1005

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Warm

Wind

Calm

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:49 AM

SUNSET

08:39 PM

14H 50M OF DAYLIGHT

MOON PHASE

Waning Gibbous

72% illuminated

Station Location

39.2736, -77.5431

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DATA · USGS · NOAA · NWSUPDATED 2026-07-05 04:55 UTC

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