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Perkiomen Creek at Graterford — water level right now

Montgomery County, Pennsylvania · NWS gauge GRAP1
Loading the latest reading…
–
current stage (ft)
 
11
minor flood stage
 
24.23
record crest
set 2021-09-02
–
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 · 8
minor · 11
moderate · 13
major · 16
Flood stageLevel (ft)What it means
Major flood stage16extensive inundation and significant evacuations — a serious event
Moderate flood stage13some buildings and roads inundated; evacuations possible
Minor flood stage11low-lying roads and fields near the river start to flood
Action stage8water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
124.232021-09-02+13.23 above
219.322020-08-05+8.32 above
318.261935-07-09+7.26 above
418.22011-08-28+7.2 above
517.081972-06-22+6.08 above
616.651933-08-23+5.65 above
716.591999-09-16+5.59 above
816.451996-01-19+5.45 above
916.22014-05-01+5.2 above
1016.21946-06-02+5.2 above
1116.032019-07-12+5.03 above
1215.671996-10-19+4.67 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

East Branch Perkiomen Creek at Schwenksville 2 mi away · loading… Schuylkill River at Norristown 10 mi away · loading… Valley Creek at PA Turnpike Bridge near Valley Forge 10 mi away · loading… Schuylkill River at Pottstown 11 mi away · loading… West Branch Perkiomen Creek at Hillegass 11 mi away · loading… Perkiomen Creek at East Greenville 12 mi away · loading…

Gauge details

NWS gauge IDGRAP1
USGS site01473000
CountyMontgomery
StatePennsylvania
NWS forecast officeMount Holly
River forecast centerMiddle Atlantic River Forecast Center
Coordinates40.229, -75.452
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 Perkiomen Creek at Graterford

Is Perkiomen Creek at Graterford 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 11 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Perkiomen Creek at Graterford?

major flood stage 16 ft, moderate flood stage 13 ft, minor flood stage 11 ft, action stage 8 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Perkiomen Creek at Graterford?

The highest crest on file at this gauge is 24.23 ft, reached on 2021-09-02 — that is 13.23 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.