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Cobbs Creek at Mt. Moriah Cemetery

Highest listed crest 18.05 ftFlood stage 11.0 ft7 crests since 2020

The Cobbs Creek at Mt. Moriah Cemetery crested at major flood stage 1 time among the 7 crests the National Weather Service lists from 2020 to 2026. The highest, 18.05 ft on August 4, 2020, was major flooding, 7.05 feet above flood stage.

The gauge

Highest listed crest
18.05 ft
August 4, 2020
Flood stage
11.0 ft
Major flooding from 16.0 ft
Crests at major
1
103rd of 170 gauges in Pennsylvania
Most recent flood crest
May 23, 2026
15.76 ft, moderate flooding
Location
Delaware County
Near Yeadon (0.8 mi), Darby (1.5 mi), Lansdowne (2.1 mi)

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Cobbs Creek at Mt. Moriah Cemetery
Action stage10.02Mar 23, 2024The level at which the NWS or its partners begin to take action
Flood stage (minor)11.03Jan 9, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage14.01May 23, 2026Some inundation of structures and roads near the stream
Major flood stage16.01Aug 4, 2020Extensive inundation of structures and roads

Every listed crest

7 crests from 2020 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Cobbs Creek at Mt. Moriah Cemetery, 2020 to 2026 101214161820ft Flood stage 11.0 ftMajor 16.0 ft Aug 4, 2020: 18.05 ft, major floodingSep 10, 2022: 12.00 ft, minor floodingDec 18, 2023: 11.68 ft, minor floodingJan 9, 2024: 11.04 ft, minor floodingMar 9, 2024: 10.50 ft, action stageMar 23, 2024: 10.90 ft, action stageMay 23, 2026: 15.76 ft, moderate flooding; 39,481 cubic feet per second Highest, 18.05 ft, Aug 4, 2020 202020252030
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Cobbs Creek at Mt. Moriah Cemetery
1Aug 4, 202018.05+7.05Major—
2May 23, 202615.76+4.76Moderate39,481
3Sep 10, 202212.00+1.00Minor—
4Dec 18, 202311.68+0.68Minor—
5Jan 9, 202411.04+0.04Minor—
6Mar 23, 202410.90−0.10Action—
7Mar 9, 202410.50−0.50Action—

Other gauges in Delaware County

Flood gauges in Delaware County
Chadds Ford9.021.04 ft, Sep 2, 202117
Chester8.024.60 ft, Sep 13, 19719
Marcus Hook (IN MLLW)7.710.14 ft, Oct 30, 20124

Delaware County: every hazard · River floods across the country · Pennsylvania

NOAA National Water Prediction Service, gauge CMMP1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.