TornadoLiveMap

Delaware River at Marcus Hook (IN MLLW) — water level right now

Philadelphia County, Pennsylvania · NWS gauge MRCP1
Loading the latest reading…
–
current stage (ft)
 
7.7
minor flood stage
 
10.14
record crest
set 2012-10-30
–
flood status
official NWS category
Official NOAA forecast → Full US flood map →

Flood stages at this gauge

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

minor · 7.7
moderate · 8.7
major · 9.7
Flood stageLevel (ft)What it means
Major flood stage9.7extensive inundation and significant evacuations — a serious event
Moderate flood stage8.7some buildings and roads inundated; evacuations possible
Minor flood stage7.7low-lying roads and fields near the river start to flood

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
110.142012-10-30+2.44 above
29.762011-04-16+2.06 above
39.752012-12-21+2.05 above
49.722021-10-29+2.02 above
59.662024-01-10+1.96 above
69.242018-09-10+1.54 above
79.112003-09-19+1.41 above
89.112014-05-01+1.41 above
99.042011-08-28+1.34 above
108.82024-04-12+1.1 above
118.762018-11-26+1.06 above
128.722023-12-18+1.02 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

Chester Creek near Chester 4 mi away · loading… Darby Creek at 84th Street Bridge at Eastwick 10 mi away · loading… Brandywine Creek at Chadds Ford 11 mi away · loading… Cobbs Creek at Mt. Moriah Cemetery 12 mi away · loading… Red Clay Creek at Kennett Square 15 mi away · loading… Delaware River at USCG Station Washington Street (IN MLLW) 16 mi away · loading…

Gauge details

NWS gauge IDMRCP1
CountyPhiladelphia
StatePennsylvania
NWS forecast officeMount Holly
River forecast centerMiddle Atlantic River Forecast Center
Coordinates39.812, -75.41
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 Delaware River at Marcus Hook (IN MLLW)

Is Delaware River at Marcus Hook (IN MLLW) 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 7.7 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Delaware River at Marcus Hook (IN MLLW)?

major flood stage 9.7 ft, moderate flood stage 8.7 ft, minor flood stage 7.7 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Delaware River at Marcus Hook (IN MLLW)?

The highest crest on file at this gauge is 10.14 ft, reached on 2012-10-30 — that is 2.44 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 Mount Holly and local emergency management.