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Beaverdam Run at Cockeysville

Highest listed crest 12.10 ftFlood stage 9.0 ft23 crests since 1984

The Beaverdam Run at Cockeysville crested at major flood stage 7 times among the 23 crests the National Weather Service lists from 1984 to 2024. The highest, 12.10 ft on July 1, 1984, was major flooding, 3.10 feet above flood stage.

The gauge

Highest listed crest
12.10 ft
July 1, 1984; 3,370 cubic feet per second
Flood stage
9.0 ft
Major flooding from 11.0 ft
Crests at major
7
12th of 108 gauges in Maryland
Most recent flood crest
January 10, 2024
10.27 ft, moderate flooding
Location
Baltimore County
Near Baltimore (13.0 mi)

Flood stages

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

Flood categories, Beaverdam Run at Cockeysville
Action stage7.05Mar 10, 2011The level at which the NWS or its partners begin to take action
Flood stage (minor)9.09Dec 18, 2023Minimal or no property damage, but possibly some public threat
Moderate flood stage10.02Jan 10, 2024Some inundation of structures and roads near the stream
Major flood stage11.07Jul 25, 2018Extensive inundation of structures and roads

Every listed crest

23 crests from 1984 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Beaverdam Run at Cockeysville, 1984 to 2024 68101214ft Flood stage 9.0 ftMajor 11.0 ft Jul 1, 1984: 12.10 ft, major flooding; 3,370 cubic feet per secondFeb 12, 1985: 9.34 ft, minor flooding; 1,950 cubic feet per secondMay 6, 1989: 11.20 ft, major floodingNov 28, 1993: 10.22 ft, moderate flooding; 1,820 cubic feet per secondJul 17, 1995: 9.22 ft, minor flooding; 1,570 cubic feet per secondJan 19, 1996: 8.80 ft, action stage; 1,470 cubic feet per secondNov 8, 1996: 7.96 ft, action stage; 1,270 cubic feet per secondSep 16, 1999: 9.37 ft, minor flooding; 1,610 cubic feet per secondSep 28, 2004: 9.52 ft, minor flooding; 1,640 cubic feet per secondJun 25, 2006: 8.68 ft, action stage; 1,440 cubic feet per secondNov 16, 2006: 9.83 ft, minor flooding; 1,720 cubic feet per secondSep 27, 2008: 11.04 ft, major flooding; 2,020 cubic feet per secondSep 11, 2009: 7.09 ft, action stage; 1,110 cubic feet per secondMar 10, 2011: 8.78 ft, action stageSep 7, 2011: 11.58 ft, major flooding; 2,160 cubic feet per secondAug 26, 2012: 11.01 ft, major flooding; 2,020 cubic feet per secondOct 29, 2012: 9.70 ft, minor flooding; 1,690 cubic feet per secondApr 30, 2014: 11.15 ft, major flooding; 2,050 cubic feet per secondSep 30, 2015: 9.11 ft, minor flooding; 1,555 cubic feet per secondJul 25, 2018: 11.17 ft, major flooding; 2,054 cubic feet per secondApr 13, 2020: 9.04 ft, minor flooding; 1,539 cubic feet per secondDec 18, 2023: 9.62 ft, minor flooding; 1,673 cubic feet per secondJan 10, 2024: 10.27 ft, moderate flooding; 1,828 cubic feet per second Highest, 12.10 ft, Jul 1, 1984 1990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Beaverdam Run at Cockeysville 1980s: 3 1990s: 3 2000s: 3 2010s: 6 6 2020s: 3 1980s1990s2000s2010s2020s
  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, Beaverdam Run at Cockeysville
1Jul 1, 198412.10+3.10Major3,370
2Sep 7, 201111.58+2.58Major2,160
3May 6, 198911.20+2.20Major—
4Jul 25, 201811.17+2.17Major2,054
5Apr 30, 201411.15+2.15Major2,050
6Sep 27, 200811.04+2.04Major2,020
7Aug 26, 201211.01+2.01Major2,020
8Jan 10, 202410.27+1.27Moderate1,828
9Nov 28, 199310.22+1.22Moderate1,820
10Nov 16, 20069.83+0.83Minor1,720
11Oct 29, 20129.70+0.70Minor1,690
12Dec 18, 20239.62+0.62Minor1,673
13Sep 28, 20049.52+0.52Minor1,640
14Sep 16, 19999.37+0.37Minor1,610
15Feb 12, 19859.34+0.34Minor1,950
16Jul 17, 19959.22+0.22Minor1,570
17Sep 30, 20159.11+0.11Minor1,555
18Apr 13, 20209.04+0.04Minor1,539
19Jan 19, 19968.80−0.20Action1,470
20Mar 10, 20118.78−0.22Action—
21Jun 25, 20068.68−0.32Action1,440
22Nov 8, 19967.96−1.04Action1,270
23Sep 11, 20097.09−1.91Action1,110

Other gauges in Baltimore County

Flood gauges in Baltimore County
Broadmoor4.06.08 ft, Jun 22, 19720
Bentley Springs5.57.30 ft, Jul 25, 20180
Woodlawn10.012.24 ft, Jul 30, 20160
Franklintown10.012.50 ft, Jun 22, 19720
Woodlawn9.012.16 ft, Jul 30, 20160
Catonsville9.011.29 ft, Jul 30, 20160
Arbutus7.013.25 ft, Aug 26, 19991
Beckleysville7.07.27 ft, Jul 24, 20180
Beckleysville6.07.85 ft, Jul 23, 20180
Glencoe7.016.50 ft, Sep 8, 20119
Hoffmanville6.010.02 ft, Aug 28, 20091
Parkton10.011.62 ft, Sep 8, 20110
Villa Nova11.021.50 ft, Jun 22, 19721
White Marsh6.013.51 ft, Oct 19, 20240
Sorrento17.018.11 ft, Jun 22, 19720
Blue Mount8.518.54 ft, Jun 22, 19724
Laurel Brook7.511.40 ft, Jul 1, 19840
Glen Arm10.011.15 ft, Jul 14, 20150
Ellicott City122.5124.78 ft, May 27, 20180
Hollofield11.031.30 ft, Jun 22, 19721
Catonsville20.027.15 ft, May 27, 20180
Dover8.510.86 ft, Jul 24, 20180
Rockdale7.07.83 ft, Jul 31, 20160
Woodlawn7.08.15 ft, Jul 30, 20160
Middle River10.813.06 ft, Aug 7, 20180
Idlewylde9.010.87 ft, Aug 14, 20120
Western Run8.026.00 ft, Jun 22, 19723
White Marsh11.018.49 ft, Aug 1, 19711

Baltimore County: every hazard · River floods across the country · Maryland

NOAA National Water Prediction Service, gauge CKYM2, 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.