Chenghai Lake
lake in Yunnan province, China
Chenghai Lake (Chinese: 程海; pinyin: Chénghaǐ) is a mesotrophic plateau lake in Yunnan Province, China. The lake has a total area of about 77.22 square kilometres (29.81 sq mi). The average depth is 25.7 metres (84 ft), with an elevation of 1,503 metres (4,931 ft). the water storage capacity is about 19.87×108m3 (i.e about 2 billion m3 or 2 km3). Chenghai Lake is one of only three lakes in the world where Spirulina is found naturally.
Ecology
Chenghai Lake is known to have significant yeast biodiversity; a study collected and identified 64 yeast strains, in 22 species across 8 genera. The lake is a closed ecosystem, and is mesotrophic, meaning it supports an intermediate level of biological productivity. Aquatic vegetation in the lake has declined, probably due to pollution, habitat destruction, eutrophication, and effects of grass carp stocks.
Pollution
Caesium-137, a radioactive fallout isotope, is present in the lake.
“Chenghai Lake” enters the record as lake in Yunnan province, China. Crown Archives preserves that source wording while asking what Chenghai, Lake and lake can confirm, complicate or overturn.
Why this record matters
“Chenghai Lake” is worth following because a concise public description often conceals a longer documentary argument. Here, Chenghai, Lake and lake provides the most credible route into that argument.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Jul 25, 2026. The linked authority identifier is Q1069970. Authority coordinates are 26.550, 100.660. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
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Questions for further research
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This entry incorporates text from “Chenghai Lake” 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.