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St. Marys River at Rockford

Highest listed crest 14.68 ftFlood stage 13.0 ft7 crests since 2005

The St. Marys River at Rockford crested above flood stage 5 times among the 7 crests the National Weather Service lists from 2005 to 2019. The highest, 14.68 ft on June 18, 2015, was minor flooding, 1.68 feet above flood stage. 2 other gauges on the St. Marys River crested above flood stage within a week of it.

The gauge

Highest listed crest
14.68 ft
June 18, 2015; 8,633 cubic feet per second
Flood stage
13.0 ft
Major flooding from 18.0 ft
Crests at major
0
5 above flood stage
Most recent flood crest
May 19, 2019
13.28 ft, minor flooding
Location
Mercer County
Near Celina (10.6 mi), Van Wert (12.1 mi)

Flood stages

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

Flood categories, St. Marys River at Rockford
Action stage10.02Mar 4, 2007The level at which the NWS or its partners begin to take action
Flood stage (minor)13.05May 19, 2019Minimal or no property damage, but possibly some public threat
Moderate flood stage15.00—Some inundation of structures and roads near the stream
Major flood stage18.00—Extensive inundation of structures and roads

Every listed crest

7 crests from 2005 to 2019. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the St. Marys River at Rockford, 2005 to 2019 1012141618ft Flood stage 13.0 ftMajor 18.0 ft Dec 31, 2005: 10.58 ft, action stageMar 4, 2007: 12.41 ft, action stage; 5,720 cubic feet per secondFeb 8, 2008: 14.56 ft, minor floodingMar 2, 2011: 14.25 ft, minor flooding; 8,153 cubic feet per secondJun 18, 2015: 14.68 ft, minor flooding; 8,633 cubic feet per secondApr 28, 2019: 13.32 ft, minor flooding; 5,586 cubic feet per secondMay 19, 2019: 13.28 ft, minor flooding; 5,531 cubic feet per second Highest, 14.68 ft, Jun 18, 2015 2005201020152020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, St. Marys River at Rockford 2000s: 1 2010s: 4 4 2000s2010s
  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. Marys River at Rockford
1Jun 18, 201514.68+1.68Minor8,633
2Feb 8, 200814.56+1.56Minor—
3Mar 2, 201114.25+1.25Minor8,153
4Apr 28, 201913.32+0.32Minor5,586
5May 19, 201913.28+0.28Minor5,531
6Mar 4, 200712.41−0.59Action5,720
7Dec 31, 200510.58−2.42Action—

The worst floods along the St. Marys River

For this gauge's highest crests, the other gauges on the St. Marys River that crested above flood stage within a week.

June 18, 2015: 14.68 ft here, minor flooding

  • DecaturIN · Jun 18, 2015 · 25.11 ft · Major
  • Fort WayneIN · Jun 19, 2015 · 19.88 ft · Major

February 8, 2008: 14.56 ft here, minor flooding

  • DecaturIN · Feb 8, 2008 · 23.60 ft · Moderate
  • Fort WayneIN · Feb 9, 2008 · 17.68 ft · Moderate

March 2, 2011: 14.25 ft here, minor flooding

  • DecaturIN · Mar 3, 2011 · 22.49 ft · Moderate

Gauges on the St. Marys River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the St. Marys River
Rockford this gaugeOH13.014.68 ft, Jun 18, 20150
DecaturIN17.026.92 ft, Jul 9, 20037
Fort WayneIN14.021.20 ft, Jul 9, 20034

Mercer County: every hazard · River floods across the country · Ohio

NOAA National Water Prediction Service, gauge RFDO1, 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.