Patapsco River at Hollofield water level

Name: Patapsco River at Hollofield 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, Patapsco River, Maryland, United States

Directions

Below flood stage

Water level

1.72ft Down 0.12 ft over the last 24 hours

Measured Oct 18, 2026, 04:15 AM EDT (44 min ago)

Flow: 87.3 cfs

History

7 days

Water level Minor flood stage

What this means

The gauge at Patapsco River at Hollofield reads 1.72 ft, a normal level.

It is 9.28 ft below the flood stage of 11.00 ft.

The level is falling, down 0.12 ft over the past 24 hours. Over the past 30 days it has moved between 1.69 ft and 1.88 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: 31.30 ftJune 22, 1972

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

The National Weather Service puts flood stage for this gauge at 11.00 ft, still 9.28 ft away.

What happens at each level

25.00 ft: Water covers the bridge at Hollofield Road, and crosses the railroad tracks in spots.
19.00 ft: Multiple roads are flooded near Hollofield. Backwater flooding of Dogwood Run is also occurring.
11.00 ft: Hollofield Road begins to flood.
1.72 ft: Right now

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

Highest crests on record

Rank	Level	Date
1	31.30 ft	June 22, 1972
2	22.80 ft	September 26, 1975
3	19.50 ft	August 1, 1933
4	15.88 ft	July 21, 1956
5	14.24 ft	July 31, 2016
6	13.25 ft	April 30, 2014
7	12.62 ft	September 7, 2011
8	11.62 ft	June 2, 1946
9	11.62 ft	December 11, 2003
10	11.01 ft	September 12, 1971

Weather at the gauge

Rain in the last 3 days: 0.07 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 58° 38° – Wind 9 mph

19 Mon 63° 39° – Wind 11 mph

20 Tue 68° 50° – Wind 12 mph

21 Wed 64° 50° – Wind 9 mph

22 Thu 65° 47° – Wind 11 mph

23 Fri 65° 50° – Wind 8 mph

24 Sat 62° 47° – Wind 7 mph

Forecast: Open-Meteo

Sunrise 07:21 AM Sunset 06:25 PM Daylight 11 hr, 5 min First quarter 48%

Map

Other gauges on the Patapsco River

Gauge	Level	Compared with normal	24 hours	Distance
Patapsco River near CatonsvilleRiver gauge, Patapsco River	10.67 ft	Below flood stage	−0.23 ft	4.4 mi
Patapsco River near ElkridgeRiver gauge, Patapsco River	5.68 ft	Below flood stage	−0.25 ft	7 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Dead Run Tributary near WoodlawnRiver gauge, Dead Run Tributary	0.20 ft	Below flood stage	+0.04 ft	2.3 mi
Dead Run near CatonsvilleRiver gauge, Dead Run	0.36 ft	Below flood stage	±0	2.8 mi
Tributary to Dead Run Tributary at WoodlawnRiver gauge, Tributary to Dead Run Tributary	0.58 ft	Below flood stage	+0.01 ft	2.8 mi
Dead Run Tributary at WoodlawnRiver gauge, Dead Run Tributary	2.80 ft	Below flood stage	−0.01 ft	3.1 mi
Dead Run at WoodlawnRiver gauge, Dead Run	0.34 ft	Below flood stage	+0.04 ft	3.2 mi
Scotts Level Branch at RockdaleRiver gauge, Scotts Level Branch	0.71 ft	Below flood stage	−0.25 ft	3.9 mi
Gwynns Falls at Villa NovaRiver gauge, Gwynns Falls	0.87 ft	Below flood stage	−0.51 ft	4.0 mi
Dead Run at FranklintownRiver gauge, Dead Run	0.43 ft	Below flood stage	−0.19 ft	4.1 mi

Questions and answers

What is flood stage for the Patapsco River at Hollofield?

The official flood stage is 11.00 ft. The level is currently 9.28 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 Patapsco River at Hollofield today?

On Oct 18, 2026, 04:15 AM EDT, the water level was 1.72 ft. Down 0.12 ft over the last 24 hours.

Is Patapsco River at Hollofield rising or falling?

Down 0.12 ft over the last 24 hours.

Is the level of Patapsco River at Hollofield normal?

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

What is the highest water level ever recorded at Patapsco River at Hollofield?

The highest level on record is 31.30 ft on June 22, 1972.

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:01589000 (Agency page)
Coordinates: 39.31031, -76.79242 (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	1.72 ft	2026-10-18 08:15	Provisional
Flow	87.3 cfs	2026-10-18 08:15	Provisional

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How to cite

U.S. Geological Survey: Patapsco River at Hollofield (usgs:01589000). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/maryland/patapsco-river-at-hollofield

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