Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Navigation Bar End Cap


This probabilistic forecast is issued by the North Central River Forecast Center.
tab left off Hydrograph tab right off tab left off River at a Glance tab right off tab left off Download tab right off tab left on tab right on
Experimental Short Range Forecast Uncertainty (AHPS) - External Links: Product Description Document | Customer Survey
About this graph
Forecasts for the Ontonagon River near Rockland are issued as needed during times of high water, but are not routinely available.

Vertical Datum updated from NGVD29 to NAVD88 by gauge owner.

Return to Area Map

Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 26
Flood Stage: 25
Action Stage: 23
Low Stage (in feet): -9999

Historic Crests
(1) 28.60 ft on 08/22/1942
(2) 21.96 ft on 05/01/2013
(3) 20.90 ft on 05/12/2003
(4) 20.82 ft on 04/24/1960
(5) 20.34 ft on 04/17/2002
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 19.82 ft on 02/21/2017
(2) 14.87 ft on 03/16/2016
(3) 15.64 ft on 03/17/2015
(4) 16.78 ft on 05/09/2014
(5) 16.81 ft on 04/10/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
KML Image
Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
25 Flooding may be occurring downstream in Ontonagon...especially during above normal lake levels or ice coverage near the mouth of the river
(1) Upstream from gage house at 7.98 ft.
(2) Upstream at 7.98 ft.
(3) Downstream at 7.98 ft.
(4) Bridge on Ontonagon River
(5) View Downstream
(6) View Upstream

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
How low could the river get?
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Marquette Weather Forecast Office
112 Airpark Drive South
Negaunee, MI 49866
(906) 475-5212
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM
Privacy Policy
About Us
Career Opportunities