Whitemarsh Run at White Marsh water level

Name: Whitemarsh Run at White Marsh water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Whitemarsh Run, Maryland, United States

Directions

Below flood stage

Water level

2.91ft Steady over the last 24 hours

Measured Oct 20, 2026, 11:00 AM EDT (31 min ago)

Flow: 3.3 cfs

History

7 days

Water level Minor flood stage

What this means

Whitemarsh Run at White Marsh is at 2.91 ft, in the normal range.

It is 8.09 ft below the flood stage of 11.00 ft.

The level has held steady over the past 24 hours. In the last month it has stayed between 2.88 ft and 4.32 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record: 18.49 ftAugust 1, 1971

Floating and fishing near Whitemarsh Run at White Marsh

Normal flows mean predictable rapids and good access at most put-ins.

Flood stage here is 11.00 ft, 8.09 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

18.00 ft: Major flooding is occurring with buildings and roads severely impacted.
15.00 ft: Water begins to affect buildings near the stream.
13.00 ft: Town Center Court begins to flood.
11.00 ft: Water begins to cover parking lots near the stream, particularly near Town Center Court.
2.91 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Rank	Level	Date
1	18.49 ft	August 1, 1971
2	16.73 ft	September 30, 2010
3	16.17 ft	August 27, 1978
4	16.11 ft	June 27, 2015
5	15.86 ft	September 11, 1971
6	15.86 ft	June 10, 2012
7	15.84 ft	September 16, 1976
8	15.55 ft	July 16, 1989
9	15.53 ft	September 27, 1985
10	15.50 ft	September 23, 2011

Weather at the gauge

Rain in the last 3 days: 0.22 in. Rain that falls upstream can take hours or days to show up at a river gauge.

19 Mon 62° 38° – Wind 10 mph

20 Tue 69° 47° – Wind 13 mph

21 Wed 62° 46° – Wind 12 mph

22 Thu 65° 45° – Wind 13 mph

23 Fri 62° 46° – Wind 10 mph

24 Sat 60° 40° – Wind 6 mph

25 Sun 60° 41° – Wind 7 mph

Forecast: Open-Meteo

Sunrise 07:21 AM Sunset 06:21 PM Daylight 11 hr Waxing gibbous 69%

Map

Other gauges on Whitemarsh Run

Gauge	Level	Compared with normal	24 hours	Distance
Whitemarsh Run near FullertonRiver gauge, Whitemarsh Run	1.11 ft	Below flood stage	−0.01 ft	2.7 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Honeygo Run near White MarshRiver gauge, Honeygo Run	0.53 ft	Below flood stage	±0	1.1 mi
Long Green Creek at Glen ArmRiver gauge, Long Green Creek	1.00 ft	Below flood stage	−0.01 ft	6.1 mi
Foster Branch near JoppatowneRiver gauge, Foster Branch	0.4 cfs	High	−0.1 cfs	6.1 mi
Minebank Run near Glen ArmRiver gauge, Minebank Run	4.11 ft	Below flood stage	±0	7 mi
Herring Run at Sinclair Lane at BaltimoreRiver gauge, Herring Run	29.8 cfs	High	±0	7 mi
West Branch Herring Run at IdlewyldeRiver gauge, West Branch Herring Run	0.88 ft	Below flood stage	−0.03 ft	7 mi
Long Quarter Branch at LuthervilleRiver gauge, Long Quarter Branch	1.00 ft	Below flood stage	±0	9 mi
Little Gunpowder Falls at Laurel BrookRiver gauge, Little Gunpowder Falls	1.08 ft	Below flood stage	−0.01 ft	9 mi

Questions and answers

What is flood stage for Whitemarsh Run at White Marsh?

The official flood stage is 11.00 ft. The level is currently 8.09 ft below it.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Whitemarsh Run at White Marsh today?

On Oct 20, 2026, 11:00 AM EDT, the water level was 2.91 ft. Steady over the last 24 hours.

Is Whitemarsh Run at White Marsh rising or falling?

Steady over the last 24 hours.

Is the level of Whitemarsh Run at White Marsh normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Whitemarsh Run at White Marsh?

The highest level on record is 18.49 ft on August 1, 1971.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:01585100 (Agency page)
Coordinates: 39.37078, -76.44606 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	2.91 ft	2026-10-20 15:00	Provisional
Flow	3.3 cfs	2026-10-20 15:00	Provisional

Download

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How to cite

U.S. Geological Survey: Whitemarsh Run at White Marsh (usgs:01585100). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/maryland/whitemarsh-run-at-white-marsh

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer