TornadoLiveMap

Patapsco River near Catonsville — water level right now

Baltimore County, Maryland · NWS gauge CTSM2
Loading the latest reading…
–
current stage (ft)
 
20
minor flood stage
 
27.15
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 · 18
minor · 20
moderate · 25
Flood stageLevel (ft)What it means
Moderate flood stage25some buildings and roads inundated; evacuations possible
Minor flood stage20low-lying roads and fields near the river start to flood
Action stage18water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
127.152018-05-27+7.15 above
227.142016-07-31+7.14 above
325.172011-09-07+5.17 above
423.832014-04-30+3.83 above
522.172018-06-04+2.17 above
622.172018-08-04+2.17 above
721.22018-07-24+1.2 above
820.722018-07-26+0.72 above
920.392018-09-10+0.39 above
1020.392018-07-23+0.39 above
1120.332018-07-26+0.33 above
1219.142018-12-160.86 below

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 at Ellicott City 2 mi away · loading… Dead Run near Catonsville 3 mi away · loading… Hudson Branch near Rogers Avenue at Ellicott City 3 mi away · loading… Patapsco River near Elkridge at Patapsco Valley State Park 3 mi away · loading… East Branch Herbert Run at Arbutus 4 mi away · loading… Patapsco River at Hollofield 4 mi away · loading…

Gauge details

NWS gauge IDCTSM2
USGS site01589025
CountyBaltimore
StateMaryland
NWS forecast officeSterling
River forecast centerMiddle Atlantic River Forecast Center
Coordinates39.251, -76.764
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 Catonsville

Is Patapsco River near Catonsville 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 20 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 Catonsville?

moderate flood stage 25 ft, minor flood stage 20 ft, action stage 18 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 Catonsville?

The highest crest on file at this gauge is 27.15 ft, reached on 2018-05-27 — that is 7.15 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.