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Western Branch at Upper Marlboro

Highest listed crest 21.18 ftFlood stage 11.0 ft44 crests since 1986

The Western Branch at Upper Marlboro crested at major flood stage 1 time among the 44 crests the National Weather Service lists from 1986 to 2024. The highest, 21.18 ft on September 8, 2011, was major flooding, 10.18 feet above flood stage.

The gauge

Highest listed crest
21.18 ft
September 8, 2011
Flood stage
11.0 ft
Major flooding from 19.0 ft
Crests at major
1
32nd of 108 gauges in Maryland
Most recent flood crest
January 10, 2024
15.03 ft, minor flooding
Location
Prince George's County
Near Bowie (9.7 mi), New Carrollton (12.6 mi), Greenbelt (14.5 mi)

Flood stages

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

Flood categories, Western Branch at Upper Marlboro
Action stage9.05May 7, 2009The level at which the NWS or its partners begin to take action
Flood stage (minor)11.036Jan 10, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage16.02Aug 28, 2011Some inundation of structures and roads near the stream
Major flood stage19.01Sep 8, 2011Extensive inundation of structures and roads

Every listed crest

44 crests from 1986 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Western Branch at Upper Marlboro, 1986 to 2024 510152025ft Flood stage 11.0 ftMajor 19.0 ft Dec 25, 1986: 10.15 ft, action stageJan 20, 1988: 9.06 ft, action stageMar 3, 1994: 12.80 ft, minor floodingMar 9, 1995: 11.16 ft, minor floodingJan 19, 1996: 13.20 ft, minor floodingMay 26, 1997: 11.98 ft, minor floodingFeb 5, 1998: 12.62 ft, minor floodingSep 16, 1999: 15.39 ft, minor floodingSep 26, 2000: 10.11 ft, action stageDec 17, 2000: 10.34 ft, action stageFeb 23, 2003: 13.00 ft, minor floodingFeb 7, 2004: 11.82 ft, minor floodingMay 20, 2005: 13.04 ft, minor floodingJun 26, 2006: 12.31 ft, minor floodingNov 17, 2006: 15.05 ft, minor floodingMay 12, 2008: 18.55 ft, moderate floodingMay 7, 2009: 9.50 ft, action stageDec 26, 2009: 13.50 ft, minor floodingMar 11, 2011: 11.72 ft, minor floodingAug 28, 2011: 16.81 ft, moderate floodingSep 8, 2011: 21.18 ft, major floodingNov 8, 2011: 14.24 ft, minor floodingOct 30, 2012: 15.26 ft, minor floodingJul 12, 2013: 11.27 ft, minor flooding; 1,675 cubic feet per secondOct 12, 2013: 12.36 ft, minor flooding; 2,317 cubic feet per secondMay 1, 2014: 14.85 ft, minor flooding; 4,781 cubic feet per secondJun 28, 2015: 11.65 ft, minor flooding; 1,864 cubic feet per secondFeb 25, 2016: 11.53 ft, minor flooding; 1,805 cubic feet per secondJul 29, 2017: 13.39 ft, minor flooding; 2,840 cubic feet per secondFeb 12, 2018: 13.22 ft, minor flooding; 2,731 cubic feet per secondMay 18, 2018: 12.75 ft, minor flooding; 2,453 cubic feet per secondJun 4, 2018: 15.17 ft, minor flooding; 3,420 cubic feet per secondJul 22, 2018: 13.05 ft, minor flooding; 2,622 cubic feet per secondAug 22, 2018: 11.95 ft, minor flooding; 2,020 cubic feet per secondDec 16, 2018: 13.40 ft, minor flooding; 2,210 cubic feet per secondMar 22, 2019: 11.90 ft, minor flooding; 2,000 cubic feet per secondJul 9, 2019: 12.21 ft, minor flooding; 2,156 cubic feet per secondJul 7, 2020: 15.07 ft, minor flooding; 3,340 cubic feet per secondJun 15, 2021: 11.68 ft, minor flooding; 1,620 cubic feet per secondOct 30, 2021: 11.94 ft, minor flooding; 1,690 cubic feet per secondAug 11, 2022: 13.29 ft, minor flooding; 2,776 cubic feet per secondDec 16, 2022: 11.43 ft, minor flooding; 1,812 cubic feet per secondDec 18, 2023: 13.61 ft, minor flooding; 2,980 cubic feet per secondJan 10, 2024: 15.03 ft, minor flooding; 3,936 cubic feet per second Highest, 21.18 ft, Sep 8, 2011 1990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Western Branch at Upper Marlboro 1980s: 0 1990s: 6 2000s: 7 2010s: 19 19 2020s: 7 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, Western Branch at Upper Marlboro
1Sep 8, 201121.18+10.18Major—
2May 12, 200818.55+7.55Moderate—
3Aug 28, 201116.81+5.81Moderate—
4Sep 16, 199915.39+4.39Minor—
5Oct 30, 201215.26+4.26Minor—
6Jun 4, 201815.17+4.17Minor3,420
7Jul 7, 202015.07+4.07Minor3,340
8Nov 17, 200615.05+4.05Minor—
9Jan 10, 202415.03+4.03Minor3,936
10May 1, 201414.85+3.85Minor4,781
11Nov 8, 201114.24+3.24Minor—
12Dec 18, 202313.61+2.61Minor2,980
13Dec 26, 200913.50+2.50Minor—
14Dec 16, 201813.40+2.40Minor2,210
15Jul 29, 201713.39+2.39Minor2,840
16Aug 11, 202213.29+2.29Minor2,776
17Feb 12, 201813.22+2.22Minor2,731
18Jan 19, 199613.20+2.20Minor—
19Jul 22, 201813.05+2.05Minor2,622
20May 20, 200513.04+2.04Minor—
21Feb 23, 200313.00+2.00Minor—
22Mar 3, 199412.80+1.80Minor—
23May 18, 201812.75+1.75Minor2,453
24Feb 5, 199812.62+1.62Minor—
25Oct 12, 201312.36+1.36Minor2,317
26Jun 26, 200612.31+1.31Minor—
27Jul 9, 201912.21+1.21Minor2,156
28May 26, 199711.98+0.98Minor—
29Aug 22, 201811.95+0.95Minor2,020
30Oct 30, 202111.94+0.94Minor1,690
31Mar 22, 201911.90+0.90Minor2,000
32Feb 7, 200411.82+0.82Minor—
33Mar 11, 201111.72+0.72Minor—
34Jun 15, 202111.68+0.68Minor1,620
35Jun 28, 201511.65+0.65Minor1,864
36Feb 25, 201611.53+0.53Minor1,805
37Dec 16, 202211.43+0.43Minor1,812
38Jul 12, 201311.27+0.27Minor1,675
39Mar 9, 199511.16+0.16Minor—
40Dec 17, 200010.34−0.66Action—
41Dec 25, 198610.15−0.85Action—
42Sep 26, 200010.11−0.89Action—
43May 7, 20099.50−1.50Action—
44Jan 20, 19889.06−1.94Action—

Other gauges in Prince George's County

Flood gauges in Prince George's County
Mitchellville9.09.20 ft, Jun 4, 20180
Upper Marlboro / Leeland Road12.014.84 ft, Jun 28, 20150
Riverdale8.013.37 ft, Jul 3, 20220
Piscataway11.515.42 ft, Jul 7, 20200

Prince George's County: every hazard · River floods across the country · Maryland

NOAA National Water Prediction Service, gauge UPRM2, 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.