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St. George Creek at Straits Point (IN MLLW)

Highest listed crest 4.90 ftFlood stage 3.5 ft35 crests since 2015

The St. George Creek at Straits Point (IN MLLW) crested above flood stage 30 times among the 35 crests the National Weather Service lists from 2015 to 2025. The highest, 4.90 ft on October 29, 2021, was moderate flooding, 1.40 feet above flood stage.

The gauge

Highest listed crest
4.90 ft
October 29, 2021
Flood stage
3.5 ft
Major flooding from 5.0 ft
Crests at major
0
30 above flood stage
Most recent flood crest
October 30, 2025
4.25 ft, moderate flooding
Location
St. Mary's County
Maryland
Identifiers
NWS SGSM2
No USGS station

Flood stages

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

Flood categories, St. George Creek at Straits Point (IN MLLW)
Action stage2.55Dec 5, 2017The level at which the NWS or its partners begin to take action
Flood stage (minor)3.522Jun 21, 2023Minimal or no property damage, but possibly some public threat
Moderate flood stage4.08Oct 30, 2025Some inundation of structures and roads near the stream
Major flood stage5.00—Extensive inundation of structures and roads

Every listed crest

35 crests from 2015 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the St. George Creek at Straits Point (IN MLLW), 2015 to 2025 2.533.544.55ft Flood stage 3.5 ftMajor 5.0 ft Jun 28, 2015: 3.07 ft, action stageAug 10, 2015: 3.01 ft, action stageSep 27, 2015: 3.51 ft, minor floodingOct 5, 2015: 4.25 ft, moderate floodingJan 10, 2016: 3.44 ft, action stageFeb 9, 2016: 3.98 ft, minor floodingFeb 25, 2016: 3.53 ft, minor floodingMay 6, 2016: 3.58 ft, minor floodingSep 9, 2016: 3.53 ft, minor floodingSep 30, 2016: 3.81 ft, minor floodingJan 24, 2017: 3.58 ft, minor floodingMay 25, 2017: 3.59 ft, minor floodingSep 21, 2017: 3.69 ft, minor floodingOct 13, 2017: 3.72 ft, minor floodingOct 24, 2017: 3.58 ft, minor floodingNov 10, 2017: 3.57 ft, minor floodingNov 16, 2017: 3.06 ft, action stageDec 5, 2017: 2.75 ft, action stageMar 7, 2018: 4.39 ft, moderate floodingApr 16, 2018: 3.52 ft, minor floodingJul 22, 2018: 3.65 ft, minor floodingSep 10, 2018: 4.56 ft, moderate floodingNov 26, 2018: 3.66 ft, minor floodingDec 21, 2018: 3.56 ft, minor floodingOct 12, 2019: 4.48 ft, moderate floodingApr 5, 2020: 3.65 ft, minor floodingMay 1, 2020: 3.75 ft, minor floodingOct 29, 2021: 4.90 ft, moderate floodingDec 16, 2022: 3.64 ft, minor floodingMar 13, 2023: 3.79 ft, minor floodingApr 29, 2023: 3.54 ft, minor floodingJun 21, 2023: 3.56 ft, minor floodingSep 24, 2023: 4.29 ft, moderate floodingJan 10, 2024: 4.25 ft, moderate floodingOct 30, 2025: 4.25 ft, moderate flooding Highest, 4.90 ft, Oct 29, 2021 201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, St. George Creek at Straits Point (IN MLLW) 2010s: 20 20 2020s: 10 2010s2020s
  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, St. George Creek at Straits Point (IN MLLW)
1Oct 29, 20214.90+1.40Moderate—
2Sep 10, 20184.56+1.06Moderate—
3Oct 12, 20194.48+0.98Moderate—
4Mar 7, 20184.39+0.89Moderate—
5Sep 24, 20234.29+0.79Moderate—
6Oct 5, 20154.25+0.75Moderate—
7Jan 10, 20244.25+0.75Moderate—
8Oct 30, 20254.25+0.75Moderate—
9Feb 9, 20163.98+0.48Minor—
10Sep 30, 20163.81+0.31Minor—
11Mar 13, 20233.79+0.29Minor—
12May 1, 20203.75+0.25Minor—
13Oct 13, 20173.72+0.22Minor—
14Sep 21, 20173.69+0.19Minor—
15Nov 26, 20183.66+0.16Minor—
16Jul 22, 20183.65+0.15Minor—
17Apr 5, 20203.65+0.15Minor—
18Dec 16, 20223.64+0.14Minor—
19May 25, 20173.59+0.09Minor—
20May 6, 20163.58+0.08Minor—
21Jan 24, 20173.58+0.08Minor—
22Oct 24, 20173.58+0.08Minor—
23Nov 10, 20173.57+0.07Minor—
24Dec 21, 20183.56+0.06Minor—
25Jun 21, 20233.56+0.06Minor—
26Apr 29, 20233.54+0.04Minor—
27Feb 25, 20163.53+0.03Minor—
28Sep 9, 20163.53+0.03Minor—
29Apr 16, 20183.52+0.02Minor—
30Sep 27, 20153.51+0.01Minor—
31Jan 10, 20163.44−0.06Action—
32Jun 28, 20153.07−0.43Action—
33Nov 16, 20173.06−0.44Action—
34Aug 10, 20153.01−0.49Action—
35Dec 5, 20172.75−0.75Action—

Other gauges in St. Mary's County

Flood gauges in St. Mary's County
Clements7.07.63 ft, Aug 28, 20110
Great Mills7.013.34 ft, Aug 20, 196914

St. Mary's County: every hazard · River floods across the country · Maryland

NOAA National Water Prediction Service, gauge SGSM2, 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.