A small USGS stream gaging station with an antenna on its roof under a cloudy evening sky

Check a river’s flow.

Search any USGS stream gauge by river or station name, by state, or near you. Each card shows the latest flow and how it compares with the normal range for today’s date; open a gauge for the full picture: trend, water temperature and what it means for trout, safety and the official NWS flood stage.

Flow rate checkerSwitch tool

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85 USGS gauges near your location (within 30 miles)

L PAX RIV TRIB ABOVE WILDE LAKE AT COLUMBIA, MD
USGS 01593370
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS
2.5 miles away in a straight line
L Pax Riv Trib above Lake Elkhorn nr Guilford, MD
USGS 01593450
No current reading. USGS answered but returned no recent value for this gauge (ice, maintenance or a seasonal gauge).
Open full screen USGS
5.6 miles away in a straight line

Patuxent River below Brighton Dam near Brighton MD

USGS 01591610

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 62 ft³/s
Gauge height: 1.77 ft

Normal for Nov 5 Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 8:45 PM EST	62	1.77
Nov 5, 7:45 PM EST	65.2	1.79
Nov 5, 6:45 PM EST	63.6	1.78
Nov 5, 5:45 PM EST	65.2	1.79
Nov 5, 4:45 PM EST	63.6	1.78
Nov 5, 3:45 PM EST	65.2	1.79
Nov 5, 2:45 PM EST	63.6	1.78
Nov 5, 1:45 PM EST	65.2	1.79
Nov 5, 12:45 PM EST	65.2	1.79
Nov 5, 11:45 AM EST	63.6	1.78
Nov 5, 10:45 AM EST	65.2	1.79
Nov 5, 9:45 AM EST	63.6	1.78
Nov 5, 8:45 AM EST	63.6	1.78
Nov 5, 7:45 AM EST	62	1.77
Nov 5, 6:45 AM EST	65.2	1.79
Nov 5, 5:45 AM EST	63.6	1.78
Nov 5, 4:45 AM EST	63.6	1.78
Nov 5, 3:45 AM EST	63.6	1.78
Nov 5, 2:45 AM EST	63.6	1.78
Nov 5, 1:45 AM EST	63.6	1.78
Nov 5, 12:45 AM EST	63.6	1.78
Nov 4, 11:45 PM EST	63.6	1.78
Nov 4, 10:45 PM EST	62	1.77
Nov 4, 9:45 PM EST	63.6	1.78
Nov 4, 8:45 PM EST	63.6	1.78
Nov 4, 7:45 PM EST	63.6	1.78
Nov 4, 6:45 PM EST	63.6	1.78

Reading Nov 5, 8:45 PM EST · checked 9:40 PM EST

Open full screen USGS NWS

On our page for Patuxent River

5.7 miles away in a straight line

LITTLE PATUXENT RIVER AT GUILFORD, MD

USGS 01593500

Caution: Low water: go quiet and stealthy

No water temperature here. The full view adds the NWS forecast.

Discharge: 8.86 ft³/s
Gauge height: 1.77 ft

Much below normal for Nov 5 Rising · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 9:00 PM EST	8.86	1.77
Nov 5, 8:05 PM EST	7.36	1.71
Nov 5, 7:10 PM EST	6.44	1.67
Nov 5, 6:15 PM EST	6.66	1.68
Nov 5, 5:20 PM EST	7.84	1.73
Nov 5, 4:25 PM EST	9.12	1.78
Nov 5, 3:30 PM EST	9.66	1.8
Nov 5, 2:35 PM EST	10.2	1.82
Nov 5, 1:40 PM EST	11.1	1.85
Nov 5, 12:45 PM EST	12.4	1.89
Nov 5, 11:50 AM EST	13	1.91
Nov 5, 10:55 AM EST	11.7	1.87
Nov 5, 10:00 AM EST	9.12	1.78
Nov 5, 9:05 AM EST	8.6	1.76
Nov 5, 8:10 AM EST	8.6	1.76
Nov 5, 7:15 AM EST	8.6	1.76
Nov 5, 6:20 AM EST	8.6	1.76
Nov 5, 5:25 AM EST	8.34	1.75
Nov 5, 4:30 AM EST	8.6	1.76
Nov 5, 3:35 AM EST	8.6	1.76
Nov 5, 2:40 AM EST	8.6	1.76
Nov 5, 1:45 AM EST	8.34	1.75
Nov 5, 12:50 AM EST	8.09	1.74
Nov 4, 11:55 PM EST	8.09	1.74
Nov 4, 11:00 PM EST	7.6	1.72
Nov 4, 10:05 PM EST	7.12	1.7
Nov 4, 9:10 PM EST	7.12	1.7
Nov 4, 8:15 PM EST	6.89	1.69
Nov 4, 7:20 PM EST	6.44	1.67

HAWLINGS RIVER NEAR SANDY SPRING, MD

USGS 01591700

Caution: Rising water: fishable, but watch the level

No water temperature here. The full view adds the NWS forecast.

Discharge: 12.5 ft³/s
Gauge height: 0.54 ft

Normal for Nov 5 Rising · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 8:45 PM EST	12.5	0.54
Nov 5, 7:45 PM EST	12.5	0.54
Nov 5, 6:45 PM EST	12.5	0.54
Nov 5, 5:45 PM EST	12.5	0.54
Nov 5, 4:45 PM EST	12.5	0.54
Nov 5, 3:45 PM EST	12.5	0.54
Nov 5, 2:45 PM EST	12.5	0.54
Nov 5, 1:45 PM EST	12.5	0.54
Nov 5, 12:45 PM EST	12.5	0.54
Nov 5, 11:45 AM EST	11.9	0.53
Nov 5, 10:45 AM EST	11.9	0.53
Nov 5, 9:45 AM EST	11.9	0.53
Nov 5, 8:45 AM EST	11.9	0.53
Nov 5, 7:45 AM EST	11.9	0.53
Nov 5, 6:45 AM EST	11.3	0.52
Nov 5, 5:45 AM EST	11.3	0.52
Nov 5, 4:45 AM EST	11.9	0.53
Nov 5, 3:45 AM EST	11.9	0.53
Nov 5, 2:45 AM EST	11.9	0.53
Nov 5, 1:45 AM EST	11.3	0.52
Nov 5, 12:45 AM EST	11.3	0.52
Nov 4, 11:45 PM EST	11.3	0.52
Nov 4, 10:45 PM EST	11.3	0.52
Nov 4, 9:45 PM EST	11.3	0.52
Nov 4, 8:45 PM EST	11.3	0.52
Nov 4, 7:45 PM EST	11.9	0.53
Nov 4, 6:45 PM EST	11.3	0.52

CATTAIL CREEK NEAR GLENWOOD, MD

USGS 01591400

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 12.7 ft³/s
Gauge height: 0.67 ft

Normal for Nov 5 Steady · 24 h

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 8:45 PM EST	12.7	0.67
Nov 5, 7:45 PM EST	12.7	0.67
Nov 5, 6:45 PM EST	12.7	0.67
Nov 5, 5:45 PM EST	12.4	0.66
Nov 5, 4:45 PM EST	12.4	0.66
Nov 5, 3:45 PM EST	12.4	0.66
Nov 5, 2:45 PM EST	12.4	0.66
Nov 5, 1:45 PM EST	12.4	0.66
Nov 5, 12:45 PM EST	12.4	0.66
Nov 5, 11:45 AM EST	12.4	0.66
Nov 5, 10:45 AM EST	12.4	0.66
Nov 5, 9:45 AM EST	12	0.65
Nov 5, 8:45 AM EST	12	0.65
Nov 5, 7:45 AM EST	12	0.65
Nov 5, 6:45 AM EST	12	0.65
Nov 5, 5:45 AM EST	12	0.65
Nov 5, 4:45 AM EST	12	0.65
Nov 5, 3:45 AM EST	12	0.65
Nov 5, 2:45 AM EST	12	0.65
Nov 5, 1:45 AM EST	12	0.65
Nov 5, 12:45 AM EST	12	0.65
Nov 4, 11:45 PM EST	12	0.65
Nov 4, 10:45 PM EST	12	0.65
Nov 4, 9:45 PM EST	12	0.65
Nov 4, 8:45 PM EST	12	0.65
Nov 4, 7:45 PM EST	12	0.65
Nov 4, 6:45 PM EST	12	0.65

PATUXENT RIVER NEAR UNITY, MD

USGS 01591000

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 16.2 ft³/s
Gauge height: 2.08 ft

Normal for Nov 5 Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 8:55 PM EST	16.2	2.08
Nov 5, 8:00 PM EST	16.2	2.08
Nov 5, 7:05 PM EST	16.2	2.08
Nov 5, 6:10 PM EST	16.2	2.08
Nov 5, 5:15 PM EST	16.2	2.08
Nov 5, 4:20 PM EST	16.2	2.08
Nov 5, 3:25 PM EST	16.2	2.08
Nov 5, 2:30 PM EST	16.2	2.08
Nov 5, 1:35 PM EST	16.2	2.08
Nov 5, 12:40 PM EST	16.2	2.08
Nov 5, 11:45 AM EST	16.2	2.08
Nov 5, 10:50 AM EST	15.7	2.07
Nov 5, 9:55 AM EST	15.7	2.07
Nov 5, 9:00 AM EST	16.2	2.08
Nov 5, 8:05 AM EST	15.7	2.07
Nov 5, 7:10 AM EST	16.2	2.08
Nov 5, 6:15 AM EST	15.7	2.07
Nov 5, 5:20 AM EST	15.7	2.07
Nov 5, 4:25 AM EST	15.7	2.07
Nov 5, 3:30 AM EST	15.7	2.07
Nov 5, 2:35 AM EST	15.7	2.07
Nov 5, 1:40 AM EST	15.7	2.07
Nov 5, 12:45 AM EST	15.7	2.07
Nov 4, 11:50 PM EST	15.7	2.07
Nov 4, 10:55 PM EST	15.7	2.07
Nov 4, 10:00 PM EST	15.7	2.07
Nov 4, 9:05 PM EST	15.7	2.07
Nov 4, 8:10 PM EST	15.7	2.07
Nov 4, 7:15 PM EST	15.7	2.07

PATAPSCO RIVER NEAR CATONSVILLE, MD

USGS 01589025

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 55.9 ft³/s
Gauge height: 10.4 ft

Below normal for Nov 5 Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 8:30 PM EST	55.9	10.4
Nov 5, 7:30 PM EST	54.7	10.4
Nov 5, 6:30 PM EST	54.7	10.4
Nov 5, 5:30 PM EST	54.7	10.4
Nov 5, 4:30 PM EST	54.7	10.4
Nov 5, 3:30 PM EST	54.7	10.4
Nov 5, 2:30 PM EST	53.6	10.4
Nov 5, 1:30 PM EST	54.7	10.4
Nov 5, 12:30 PM EST	54.7	10.4
Nov 5, 11:30 AM EST	55.9	10.4
Nov 5, 10:30 AM EST	55.9	10.4
Nov 5, 9:30 AM EST	55.9	10.4
Nov 5, 8:30 AM EST	54.7	10.4
Nov 5, 7:30 AM EST	54.7	10.4
Nov 5, 6:30 AM EST	54.7	10.4
Nov 5, 5:30 AM EST	54.7	10.4
Nov 5, 4:30 AM EST	54.7	10.4
Nov 5, 3:30 AM EST	53.6	10.4
Nov 5, 2:30 AM EST	53.6	10.4
Nov 5, 1:30 AM EST	52.5	10.4
Nov 5, 12:30 AM EST	52.5	10.4
Nov 4, 11:30 PM EST	52.5	10.4
Nov 4, 10:30 PM EST	53.6	10.4
Nov 4, 9:30 PM EST	52.5	10.4
Nov 4, 8:30 PM EST	52.5	10.4
Nov 4, 7:30 PM EST	52.5	10.4
Nov 4, 6:30 PM EST	52.5	10.4

PATAPSCO RIVER AT HOLLOFIELD, MD

USGS 01589000

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 54.7 ft³/s
Gauge height: 1.65 ft

Below normal for Nov 5 Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 9:15 PM EST	54.7	1.65
Nov 5, 8:15 PM EST	52.9	1.64
Nov 5, 7:15 PM EST	52.9	1.64
Nov 5, 6:15 PM EST	52.9	1.64
Nov 5, 5:15 PM EST	52.9	1.64
Nov 5, 4:15 PM EST	52.9	1.64
Nov 5, 3:15 PM EST	52.9	1.64
Nov 5, 2:15 PM EST	52.9	1.64
Nov 5, 1:15 PM EST	52.9	1.64
Nov 5, 12:15 PM EST	52.9	1.64
Nov 5, 11:15 AM EST	52.9	1.64
Nov 5, 10:15 AM EST	51.1	1.63
Nov 5, 9:15 AM EST	51.1	1.63
Nov 5, 8:15 AM EST	51.1	1.63
Nov 5, 7:15 AM EST	51.1	1.63
Nov 5, 6:15 AM EST	51.1	1.63
Nov 5, 5:15 AM EST	51.1	1.63
Nov 5, 4:15 AM EST	51.1	1.63
Nov 5, 3:15 AM EST	51.1	1.63
Nov 5, 2:15 AM EST	51.1	1.63
Nov 5, 1:15 AM EST	51.1	1.62
Nov 5, 12:15 AM EST	51.1	1.62
Nov 4, 11:15 PM EST	51.1	1.62
Nov 4, 10:15 PM EST	51.1	1.62
Nov 4, 9:15 PM EST	51.1	1.62
Nov 4, 8:15 PM EST	51.1	1.62
Nov 4, 7:15 PM EST	51.1	1.62

Patuxent River near Laurel, MD

USGS 01592500

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 17.8 ft³/s
Gauge height: 4.29 ft

Normal for Nov 5 Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 9:15 PM EST	17.8	4.29
Nov 5, 8:15 PM EST	17.8	4.29
Nov 5, 7:15 PM EST	17.3	4.28
Nov 5, 6:15 PM EST	17.3	4.28
Nov 5, 5:15 PM EST	17.3	4.28
Nov 5, 4:15 PM EST	17.3	4.28
Nov 5, 3:15 PM EST	17.8	4.29
Nov 5, 2:15 PM EST	17.3	4.28
Nov 5, 1:15 PM EST	17.3	4.28
Nov 5, 12:15 PM EST	17.8	4.29
Nov 5, 11:15 AM EST	17.8	4.29
Nov 5, 10:15 AM EST	17.8	4.29
Nov 5, 9:15 AM EST	17.3	4.28
Nov 5, 8:15 AM EST	17.8	4.29
Nov 5, 7:15 AM EST	17.3	4.28
Nov 5, 6:15 AM EST	17.8	4.29
Nov 5, 5:15 AM EST	17.3	4.28
Nov 5, 4:15 AM EST	17.3	4.28
Nov 5, 3:15 AM EST	17.8	4.29
Nov 5, 2:15 AM EST	17.3	4.28
Nov 5, 1:15 AM EST	17.8	4.29
Nov 5, 12:15 AM EST	17.8	4.29
Nov 4, 11:15 PM EST	17.3	4.28
Nov 4, 10:15 PM EST	17.3	4.28
Nov 4, 9:15 PM EST	17.3	4.28
Nov 4, 8:15 PM EST	17.3	4.28
Nov 4, 7:15 PM EST	17.3	4.28

LITTLE PATUXENT RIVER AT SAVAGE, MD

USGS 01594000

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 34.6 ft³/s
Gauge height: 3.04 ft

Below normal for Nov 5 Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 9:15 PM EST	34.6	3.04
Nov 5, 8:20 PM EST	34.6	3.04
Nov 5, 7:25 PM EST	34.6	3.04
Nov 5, 6:30 PM EST	35.4	3.05
Nov 5, 5:35 PM EST	35.4	3.05
Nov 5, 4:40 PM EST	33.8	3.03
Nov 5, 3:45 PM EST	32.2	3.01
Nov 5, 2:50 PM EST	32.2	3.01
Nov 5, 1:55 PM EST	32.2	3.01
Nov 5, 1:00 PM EST	31.5	3
Nov 5, 12:05 PM EST	32.2	3.01
Nov 5, 11:10 AM EST	32.2	3.01
Nov 5, 10:15 AM EST	31.5	3
Nov 5, 9:20 AM EST	31.5	3
Nov 5, 8:25 AM EST	31.5	3
Nov 5, 7:30 AM EST	31.5	3
Nov 5, 6:35 AM EST	30.7	2.99
Nov 5, 5:40 AM EST	30.7	2.99
Nov 5, 4:45 AM EST	30.7	2.99
Nov 5, 3:50 AM EST	30	2.98
Nov 5, 2:55 AM EST	30	2.98
Nov 5, 2:00 AM EST	30	2.98
Nov 5, 1:05 AM EST	30	2.98
Nov 5, 12:10 AM EST	30.7	2.99
Nov 4, 11:15 PM EST	31.5	3
Nov 4, 10:20 PM EST	31.5	3
Nov 4, 9:25 PM EST	32.2	3.01
Nov 4, 8:30 PM EST	32.2	3.01
Nov 4, 7:35 PM EST	33	3.02

DEAD RUN NEAR CATONSVILLE, MD

USGS 01589312

Limited data: Not enough data: no water temperature or flow statistics here

No water temperature, flow statistics here. The full view adds the NWS forecast.

Gauge height: 0.38 ft

No flow here now. USGS stopped publishing discharge at this gauge on Sep 12, 2025; it still reports what is shown. Flow on the same river: DEAD RUN AT FRANKLINTOWN, MD (USGS 01589330, 1.8 miles away).

Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Gauge height, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Gauge height (ft)
Nov 5, 4:35 PM EST	0.38
Nov 5, 3:40 PM EST	0.38
Nov 5, 2:45 PM EST	0.39
Nov 5, 1:50 PM EST	0.39
Nov 5, 12:55 PM EST	0.39
Nov 5, 12:00 PM EST	0.38
Nov 5, 11:05 AM EST	0.39
Nov 5, 10:10 AM EST	0.4
Nov 5, 9:15 AM EST	0.39
Nov 5, 8:20 AM EST	0.39
Nov 5, 7:25 AM EST	0.39
Nov 5, 6:30 AM EST	0.4
Nov 5, 5:35 AM EST	0.42
Nov 5, 4:40 AM EST	0.45
Nov 5, 3:45 AM EST	0.45
Nov 5, 2:50 AM EST	0.53
Nov 5, 1:55 AM EST	0.39
Nov 5, 1:00 AM EST	0.39
Nov 5, 12:05 AM EST	0.39
Nov 4, 11:10 PM EST	0.39
Nov 4, 10:15 PM EST	0.39
Nov 4, 9:20 PM EST	0.39
Nov 4, 8:25 PM EST	0.39
Nov 4, 7:30 PM EST	0.39
Nov 4, 6:35 PM EST	0.39
Nov 4, 5:40 PM EST	0.39
Nov 4, 4:45 PM EST	0.39
Nov 4, 3:50 PM EST	0.39
Nov 4, 2:55 PM EST	0.39

Checked Nov 6, 2:40 AM UTC; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.

L PAX RIV TRIB ABOVE WILDE LAKE AT COLUMBIA, MD
USGS 01593370 · MD · live flow · gauge height · 2.5 mi
Reading the gauge…
L Pax Riv Trib above Lake Elkhorn nr Guilford, MD
USGS 01593450 · MD · live flow · gauge height · 5.6 mi
Reading the gauge…
Patuxent River below Brighton Dam near Brighton MD
USGS 01591610 · MD · live flow · gauge height · 5.7 mi
Reading the gauge…
LITTLE PATUXENT RIVER AT GUILFORD, MD
USGS 01593500 · MD · live flow · gauge height · 5.9 mi
Reading the gauge…
HAWLINGS RIVER NEAR SANDY SPRING, MD
USGS 01591700 · MD · live flow · gauge height · 7.1 mi
Reading the gauge…
CATTAIL CREEK NEAR GLENWOOD, MD
USGS 01591400 · MD · live flow · gauge height · 7.4 mi
Reading the gauge…
PATUXENT RIVER NEAR UNITY, MD
USGS 01591000 · MD · live flow · gauge height · 7.5 mi
Reading the gauge…
PATAPSCO RIVER NEAR CATONSVILLE, MD
USGS 01589025 · MD · live flow · gauge height · 8.2 mi
Reading the gauge…
PATAPSCO RIVER AT HOLLOFIELD, MD
USGS 01589000 · MD · live flow · gauge height · 8.3 mi
Reading the gauge…
Patuxent River near Laurel, MD
USGS 01592500 · MD · live flow · gauge height · 8.6 mi
Reading the gauge…
LITTLE PATUXENT RIVER AT SAVAGE, MD
USGS 01594000 · MD · live flow · gauge height · 8.8 mi
Reading the gauge…
DEAD RUN NEAR CATONSVILLE, MD
USGS 01589312 · MD · flow record ended · gauge height · 10 mi
Reading the gauge…

48 more gauges (first 60 of 85)

PATAPSCO RIVER NEAR ELKRIDGE, MDUSGS 01589035 · MD · live flow · gauge height · 10.3 mi
DEAD RUN TRIBUTARY NEAR WOODLAWN, MDUSGS 01589316 · MD · flow record ended · gauge height · 10.5 mi
PAINT BRANCH TRIBUTARY NEAR COLESVILLE, MDUSGS 01649150 · MD · live flow · gauge height · 11 mi
TRIBUTARY TO DEAD RUN TRIBUTARY AT WOODLAWN, MDUSGS 01589317 · MD · flow record ended · gauge height · 11 mi
DEAD RUN TRIBUTARY AT WOODLAWN, MDUSGS 01589320 · MD · flow record ended · gauge height · 11.1 mi
DEAD RUN AT WOODLAWN, MDUSGS 01589315 · MD · flow record ended · gauge height · 11.1 mi
DEAD RUN AT FRANKLINTOWN, MDUSGS 01589330 · MD · live flow · gauge height · 11.8 mi
SCOTTS LEVEL BRANCH AT ROCKDALE, MDUSGS 01589290 · MD · live flow · gauge height · water temperature · 11.9 mi
EAST BRANCH HERBERT RUN AT ARBUTUS, MDUSGS 01589100 · MD · live flow · gauge height · 11.9 mi
GWYNNS FALLS AT VILLA NOVA, MDUSGS 01589300 · MD · live flow · gauge height · 12.3 mi
Northwest Branch Anacostia River nr Colesville, MDUSGS 01650500 · MD · live flow · gauge height · 13.3 mi
RED RUN NEAR OWINGS MILLS, MDUSGS 01589230 · MD · live flow · gauge height · 13.7 mi
PAINT BRANCH NEAR COLLEGE PARK, MDUSGS 01649190 · MD · live flow · gauge height · water temperature · 14.3 mi
GWYNNS FALLS AT WASHINGTON BLVD AT BALTIMORE, MDUSGS 01589352 · MD · live flow · gauge height · 14.4 mi
TURKEY BRANCH NEAR ROCKVILLE, MDUSGS 01647850 · MD · live flow · gauge height · 14.6 mi
MORGAN RUN NEAR LOUISVILLE, MDUSGS 01586610 · MD · live flow · gauge height · 15 mi
GWYNNS FALLS NEAR DELIGHT, MDUSGS 01589197 · MD · live flow · gauge height · 15.9 mi
SAWMILL CREEK AT GLEN BURNIE, MDUSGS 01589500 · MD · live flow · gauge height · 15.9 mi
JONES FALLS AT SORRENTO, MDUSGS 01589440 · MD · live flow · gauge height · 17.4 mi
BEAVER RUN NEAR FINKSBURG, MDUSGS 01586210 · MD · live flow · gauge height · 17.5 mi
LITTLE SENECA CREEK TRIBUTARY AT BRINK, MDUSGS 01644372 · MD · live flow · gauge height · 17.9 mi
SLIGO CREEK NEAR TAKOMA PARK, MDUSGS 01650800 · MD · live flow · gauge height · water temperature · 17.9 mi
LITTLE SENECA CREEK TRIBUTARY NEAR CLARKSBURG, MDUSGS 01644371 · MD · live flow · gauge height · 18.2 mi
SOUTH FORK JABEZ BRANCH AT MILLERSVILLE, MDUSGS 01589795 · MD · live flow · gauge height · 18.3 mi
NORTH BRANCH PATAPSCO RIVER AT CEDARHURST, MDUSGS 01586000 · MD · live flow · gauge height · 18.5 mi
NORTHEAST BRANCH ANACOSTIA RIVER AT RIVERDALE, MDUSGS 01649500 · MD · live flow · gauge height · water temperature · 19.1 mi
LITTLE SENECA CREEK TRIBUTARY NEAR GERMANTOWN, MDUSGS 01644375 · MD · live flow · gauge height · 19.4 mi
NORTHWEST BRANCH ANACOSTIA RIVER AT BRENTWOOD, MDUSGS 01651003 · MD · live flow · gauge height · water temperature · 20 mi
HERRING RUN AT SINCLAIR LANE AT BALTIMORE, MDUSGS 01585219 · MD · live flow · gauge height · 20.1 mi
WEST BRANCH HERRING RUN AT IDLEWYLDE, MDUSGS 01585200 · MD · live flow · gauge height · 20.1 mi
CABIN BRANCH NEAR BOYDS, MDUSGS 01644380 · MD · live flow · gauge height · 20.1 mi
Rock Creek at Joyce Rd Washington, DCUSGS 01648010 · DC · live flow · gauge height · water temperature · 20.3 mi
POND BRANCH AT OREGON RIDGE, MDUSGS 01583570 · MD · live flow · gauge height · 20.8 mi
SOPER BRANCH AT HYATTSTOWN, MDUSGS 01643395 · MD · live flow · gauge height · 21 mi
BAISMAN RUN AT BROADMOOR, MDUSGS 01583580 · MD · live flow · gauge height · 21 mi
PINEY RUN AT DOVER, MDUSGS 01583100 · MD · live flow · gauge height · 21.2 mi
TENMILE CREEK NEAR CLARKSBURG, MDUSGS 01644388 · MD · live flow · gauge height · 21.3 mi
MOORES RUN AT RADECKE AVE AT BALTIMORE, MDUSGS 01585230 · MD · live flow · gauge height · 21.3 mi
LONG QUARTER BRANCH AT LUTHERVILLE, MDUSGS 01583800 · MD · live flow · gauge height · 21.5 mi
TENMILE CREEK NEAR BOYDS, MDUSGS 01644390 · MD · live flow · gauge height · 21.5 mi
BEAVERDAM CREEK NEAR CHEVERLY, MDUSGS 01651730 · MD · live flow · gauge height · 22.1 mi
HICKEY RUN AT NATIONAL ARBORETUM AT WASHINGTON, DCUSGS 01651770 · DC · live flow · gauge height · water temperature · 22.3 mi
BEAVERDAM RUN AT COCKEYSVILLE, MDUSGS 01583600 · MD · live flow · gauge height · 22.4 mi
MINEBANK RUN NEAR GLEN ARM, MDUSGS 0158397967 · MD · live flow · gauge height · 22.6 mi
ANACOSTIA RIVER AT KENILWORTH AT WASHINGTON, DCUSGS 01651760 · DC · live flow · gauge height · water temperature · 22.7 mi
PATUXENT RIVER NEAR BOWIE, MDUSGS 01594440 · MD · live flow · gauge height · 22.7 mi
WESTERN RUN AT WESTERN RUN, MDUSGS 01583500 · MD · live flow · gauge height · 22.8 mi
POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STAUSGS 01646500 · MD · live flow · gauge height · water temperature · 22.8 mi

Quick picks: our 2,852 waters by state

Each state opens its USGS gauges and our water pages there; a water opens the live cards for its gauges, or the NOAA tides for flats and surf.

Search covers 11,178 USGS stream gauges that reported discharge, gauge height or water temperature in the 183 days before 2026-10-23 (USGS series catalog); readings are fetched live when a gauge is shown.

Where these numbers come from

Discharge, gauge height, water temperature and water quality: U.S. Geological Survey readings (provisional, can be revised), cached for 15 minutes. Where USGS publishes a gauge’s flow only once a day, the latest daily mean is shown with its date.
Normal range: the 25th to 75th percentile of daily mean flow for the same calendar day over the gauge’s record (USGS daily statistics), classed as USGS does (hyswap).
Temperature guidance for trout quotes the gauge’s own state fish and wildlife agency; where we found none, it says so and quotes federal guidance (National Park Service, U.S. Fish and Wildlife Service). Cold-water safety quotes the NWS; dissolved oxygen and pH are read against EPA criteria. Each line names its source.
Flood stage and forecasts: the National Weather Service’s National Water Prediction Service and its Turn Around Don’t Drown guidance. Tides: NOAA Tides & Currents.

General guidance, not a fishing forecast, a safety guarantee or a statement about access. Planning a trip? The trip planner shows these readings on every day you fish a water.