Lake Superior at Ontonagon
Lake Superior at Ontonagon read 183.437 m above IGLD 1985 at .
That is within the normal range for the date.
- Up 0.027 m in 24 hours.
- Down 0.055 m in 7 days.
Long views: the past year, the past decade and the whole record
Normal range and official levels
The normal range for 5 October is 183.27 m to 183.76 m: the 10th to 90th percentile of the daily averages from 28 September to 12 October in 67 years between 1959 and 2025.
Records
- Highest daily average in our series since 25 July 1959: 183.971 m on 21 October 2019.
- Lowest daily average in our series since 25 July 1959: 182.799 m on 3 March 2007.
About this gauge
Ontonagon is a gauge on Lake Superior in Michigan, United States.
It lies at 46.8744° N, 89.3242° W.
Its readings come from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS).
Heights are given above IGLD 1985, the datum the source names (IGLD 1985).
The newest reading is provisional: the source may still correct it.