- Date
- 1991-08
- Kind
- Observation
- Where
- Beaver Island archipelago
- Eras
- Modern era
- Concepts
- hydrologyenvironmentmaritimecommunication
- Within
- Beaver Island archipelago
Summary
The September 1991 issue reports Lakes Michigan–Huron at 578.53 feet at the end of August, about one inch below the long-term August average and forecast to continue declining seasonally.
Evidence limits
This is a reprinted regional bulletin, not a Beaver Island shoreline gauge series or hydrologic reanalysis.
Sources
- Reports Lakes Michigan–Huron at 578.53 feet at the end of August, 21 inches above chart datum, about three inches above the prior year, and an August monthly mean about one inch below the long-term average; the forecast expected further seasonal decline. The holding institution's portal restricts automated access; the archive holds a copy of this issue and can provide it on request.data1 · beaver-island-archive · beaver_beacon · 1991-09_Beaver-Beacon
- The held eighteen-page issue scan confirms the lake-level report.data1 · beaver-island-archive · scans · beaver_beacon · issues · 1991-09_Beaver-Beacon
Added 4 August 2026. Recent changes
Cite this article
Beaver Island Archive, “Lakes Michigan–Huron decline below the long-term August average, 1991”, https://beaverislandarchive.org/events/great-lakes-michigan-huron-level-august-1991/, accessed [date], citing Beaver Beacon, September 1991, “LAKE LEVELS.” (and 1 further source listed on the page).
Last revised 2026-08-04. Fill in [date] with the date you read it — this page is static and cannot know that.
BibTeX for “Lakes Michigan–Huron decline below the long-term August average, 1991”RIS for “Lakes Michigan–Huron decline below the long-term August average, 1991”