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Patapsco River near Elkridge at Patapsco Valley State Park — water level right now

Baltimore County, Maryland · NWS gauge ERDM2
Loading the latest reading…
–
current stage (ft)
 
15
minor flood stage
 
24.76
record crest
set 2018-05-27
–
flood status
official NWS category
Official NOAA forecast → USGS data → Full US flood map →

Flood stages at this gauge

Where the water stands right now against the four official thresholds:

action · 10
minor · 15
moderate · 19
major · 21
Flood stageLevel (ft)What it means
Major flood stage21extensive inundation and significant evacuations — a serious event
Moderate flood stage19some buildings and roads inundated; evacuations possible
Minor flood stage15low-lying roads and fields near the river start to flood
Action stage10water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
124.762018-05-27+9.76 above
223.782016-07-31+8.78 above
321.662011-09-07+6.66 above
421.152014-04-30+6.15 above
518.472013-01-31+3.47 above
618.012018-06-04+3.01 above
717.672012-10-29+2.67 above
817.242018-08-04+2.24 above
916.82018-12-16+1.8 above
1016.312018-07-24+1.31 above
1116.212020-08-12+1.21 above
1216.042019-03-22+1.04 above

Historic crests recorded at this gauge by the National Weather Service — the 12 highest on file.

Where this gauge is

The marker is this gauge; nearby gauges load live and are clickable.

Nearby river gauges

Patapsco River near Elkridge below Patapsco Valley State Park 1 mi away · loading… East Branch Herbert Run at Arbutus 2 mi away · loading… Patapsco River near Catonsville 3 mi away · loading… Dead Run near Catonsville 5 mi away · loading… Gwynns Falls at Washington Blvd in Baltimore 5 mi away · loading… Hudson Branch near Rogers Avenue at Ellicott City 5 mi away · loading…

Gauge details

NWS gauge IDERDM2
USGS site01589035
CountyBaltimore
StateMaryland
NWS forecast officeSterling
River forecast centerMiddle Atlantic River Forecast Center
Coordinates39.227, -76.723
Time zoneEST5EDT
Turn Around, Don't Drown. Six inches of moving water can knock you off your feet and twelve inches can float a car. Never drive around barricades or into water of unknown depth — most flood deaths happen in vehicles.

Questions about Patapsco River near Elkridge at Patapsco Valley State Park

Is Patapsco River near Elkridge at Patapsco Valley State Park flooding right now?

The live reading at the top of this page answers that: the gauge is compared against its official NWS flood stages every 15 minutes. Minor flooding at this gauge begins at 15 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Patapsco River near Elkridge at Patapsco Valley State Park?

major flood stage 21 ft, moderate flood stage 19 ft, minor flood stage 15 ft, action stage 10 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Patapsco River near Elkridge at Patapsco Valley State Park?

The highest crest on file at this gauge is 24.76 ft, reached on 2018-05-27 — that is 9.76 ft above minor flood stage. The full list of the highest crests is in the table on this page.

Where does this data come from?

From the NOAA National Water Prediction Service, the official U.S. river gauge network — a U.S. government work in the public domain. Live stage is refreshed every 15 minutes; flood thresholds and historic crests are refreshed monthly. For life-safety decisions follow NWS Sterling and local emergency management.