- Dates
- 2000-04 – 2000-06
- Kind
- Observation
- Where
- Beaver Island
- Eras
- Modern era
- Concepts
- hydrologyweathercommunication
- Within
- Beaver Island
Summary
John A. “Johnny Andy” Gallagher wrote that his observations supported a roughly 20-year Great Lakes water-level cycle, with about ten years of recession followed by a return toward normal or high water.
Evidence limits
This is a first-person recollection, not a gauge series or hydrological study; the cycle claim remains unverified.
Sources
- Publishes Gallagher’s personal recollection that Great Lakes water recedes for roughly ten years and returns toward normal or high levels in the next ten years. 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 · 2000-04_Beaver-Beacon
- The held issue scan confirms the water-level letter.data1 · beaver-island-archive · scans · beaver_beacon · issues · 2000-04_Beaver-Beacon
- Repeats the published observation attributed to Johnny Andy Gallagher that a roughly ten-year rise-and-fall cycle has persisted during his lifetime. 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 · 2000-06_Beaver-Beacon
- The held issue scan confirms the lake-level observation.data1 · beaver-island-archive · scans · beaver_beacon · issues · 2000-06_Beaver-Beacon
Added 6 August 2026. Recent changes
Cite this article
Beaver Island Archive, “A Beaver Island letter recalls a 20-year Great Lakes water-level cycle in 2000”, https://beaverislandarchive.org/events/beaver-island-water-level-cycle-letter-2000/, accessed [date], citing Beaver Beacon, April 2000, “Water Levels.” (and 3 further sources listed on the page).
Last revised 2026-08-06. Fill in [date] with the date you read it — this page is static and cannot know that.
BibTeX for “A Beaver Island letter recalls a 20-year Great Lakes water-level cycle in 2000”RIS for “A Beaver Island letter recalls a 20-year Great Lakes water-level cycle in 2000”