Patapsco River at Hollofield, MD

Baltimore County, Maryland · USGS gauge 01589000 · NWS PRHM2 · Patapsco River flood status · Maryland river levels

Nearby: river levels near Baltimore · river levels near Guilford

Is Patapsco River at Hollofield, MD flooding right now?

Patapsco River at Hollofield, MD measured 1.49 ft on 2026-09-11 01:15:00 UTC. That observation was 9.5 ft below its 11 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
1.49 ft
as of 49 min ago
Streamflow
34 cfs
data refreshed 3 min ago

Minor flooding here begins at 11 ft, with major flooding at 25 ft. The highest crest on record was 31.3 ft on Thu, Jun 22, 1972.

Streamflow outlook

NOAA National Water Model forecast, issued 14 hours ago. The NWM models discharge for every river reach in the country, including the many gauges the National Weather Service does not forecast individually. It is a model, not an official NWS river forecast, and it predicts flow rather than water level.

Flood stages at this gauge

CategoryStageCurrent distance
Action9 ft7.5 ft below
Minor flood11 ft9.5 ft below
Moderate flood19 ft17.5 ft below
Major flood25 ft23.5 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

StageDate
31.3 ft1972-06-22
22.8 ft1975-09-26
19.5 ft1933-08-01
15.88 ft1956-07-21
14.24 ft2016-07-31

Last 7 days

Past 7 days · 1.48–1.75 ft

Nearby gauges

GaugeDistanceCounty
Dead Run Tributary near Woodlawn, MD2.3 miBaltimore County
Dead Run near Catonsville, MD2.8 miBaltimore County
Tributary to Dead Run Tributary at Woodlawn, MD2.8 miBaltimore County
Dead Run Tributary at Woodlawn, MD3.1 miBaltimore County
Dead Run at Woodlawn, MD3.2 miBaltimore County
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast