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Susquehanna River at Marietta — water level right now

Lancaster County, Pennsylvania · NWS gauge MRTP1
Loading the latest reading…
–
current stage (ft)
 
49
minor flood stage
 
64.54
record crest
set 1972-06-23
–
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 · 44
minor · 49
moderate · 52
major · 54
Flood stageLevel (ft)What it means
Major flood stage54extensive inundation and significant evacuations — a serious event
Moderate flood stage52some buildings and roads inundated; evacuations possible
Minor flood stage49low-lying roads and fields near the river start to flood
Action stage44water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
164.541972-06-23+15.54 above
260.731936-03-19+11.73 above
358.31889-06-02+9.3 above
458.162011-09-09+9.16 above
556.81996-01-21+7.8 above
656.272004-09-19+7.27 above
755.731975-09-27+6.73 above
854.91946-05-29+5.9 above
954.031964-03-12+5.03 above
1053.491984-02-16+4.49 above
1153.331940-04-02+4.33 above
1253.221993-04-03+4.22 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

Conestoga River at Lancaster 13 mi away · loading… Swatara Creek at Middletown 14 mi away · loading… Central PA Dams Indian Rock Dam on Codorus Creek 15 mi away · loading… Swatara Creek near Hershey 18 mi away · loading… Susquehanna River at Harrisburg 23 mi away · loading… Yellow Breeches Creek near Camp Hill 23 mi away · loading…

Gauge details

NWS gauge IDMRTP1
USGS site01576000
CountyLancaster
StatePennsylvania
NWS forecast officeState College
River forecast centerMiddle Atlantic River Forecast Center
Coordinates40.054, -76.531
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 Susquehanna River at Marietta

Is Susquehanna River at Marietta 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 49 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Susquehanna River at Marietta?

major flood stage 54 ft, moderate flood stage 52 ft, minor flood stage 49 ft, action stage 44 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Susquehanna River at Marietta?

The highest crest on file at this gauge is 64.54 ft, reached on 1972-06-23 — that is 15.54 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 State College and local emergency management.