Albysjön (Tyresö)
lake in Tyresö municipality, Sweden

Albysjön (Swedish for "Lake of Alby") is a lake in Tyresö Municipality just south of Stockholm in Sweden.
Albysjön is the last lake in the Tyresån Lake System. Surrounded by green spaces and pastures, it is popular for bathing, angling, canoeing, and other open-air activities. Motor engines are prohibited.
Environmental status
Levels of phosphorus and nitrogen are very high. High amounts of phosphorus compounds causes dense reed growth in the shallow bays of the lake. The reed was mechanically removed in 1975, but no follow-up action has taken place since. Lack of oxygen and hydrogen sulfide formation in sediments is a problem in summers. A brook causes high levels of lead and copper in Uddsbyviken, one of the northern bays. Samples taken in 1989 showed pollution is 10-20 times higher in the brook than normal levels for such water courses, which is however not unusual in and around Stockholm.
The public source identifies “Albysjön (Tyresö)” as lake in Tyresö municipality, Sweden. This brief keeps that definition visible, then builds a research path around Albysjön, Tyresö and lake.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Albysjön (Tyresö)”, the useful work is to connect “lake in Tyresö municipality, Sweden” to the records capable of establishing context and consequence.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Jul 24, 2026. The linked authority identifier is Q1193471. The first chronological checks are 1975 and 1989.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Albysjön (Tyresö)”, its source revision and the description used here.
- Expand the search: follow Albysjön (Tyresö) primary sources, Albysjön (Tyresö) archive and Albysjön research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Albysjön (Tyresö)”?
- Which authority defined the place, boundary or structure at the relevant date?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Albysjön (Tyresö)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.