Kamogawa, Chiba
city in Chiba Prefecture, Japan
Kamogawa (鴨川市, Kamogawa-shi) is a city located in Chiba Prefecture, Japan. As of 1 December 2020, the city had an estimated population of 31,722 in 14,558 households and a population density of 170 persons per km2. The total area of the city is 191.14 square kilometers (73.80 sq mi).
The name of the city consists of two kanji characters: the first, kamo (鴨), meaning "duck", and the second, kawa (川), meaning "river".
Geography
Kamogawa is near the southeastern tip of the Bōsō Peninsula, facing the North Pacific Ocean, about 50 km south of the prefectural capital, Chiba, and about 85 km from the capital of Japan, Tokyo. Kamogawa is home to Mount Atago, which at 408.2 m (1,339 ft) is the highest point in Chiba Prefecture. Mount Kiyosumi (337 m (1,106 ft)) is home to Seichō-ji. The Kamo River (22.25 kilometers (13.83 mi)) empties into the Pacific Ocean at Kamogawa.
Neighboring municipalities
Chiba Prefecture
Futtsu
Katsuura
Kimitsu
Kyonan
Minamibōsō
Ōtaki
Climate
Kamogawa has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Kamogawa is 15.5 °C. The average annual rainfall is 1833 mm with September as the wettest month.
Begin with the source’s own compact description: “Kamogawa, Chiba” is city in Chiba Prefecture, Japan. The dossier treats that line as a proposition to test through Kamogawa, Chiba and city, not as a finished interpretation.
Why this record matters
The phrase “city in Chiba Prefecture, Japan” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
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 Sep 21, 2026. The linked authority identifier is Q387211. VIAF identifies the subject as 140733279. The Library of Congress control number is n81128746. Authority coordinates are 35.114, 140.099. 2 of 7 selected statements include explicit references; 2 carry qualifiers and 1 use preferred rank. The first chronological checks are 2020 and 1833.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. 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 “Kamogawa, Chiba”, its source revision and the description used here.
- Expand the search: follow Kamogawa, Chiba primary sources, Kamogawa, Chiba archive and Kamogawa 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 “Kamogawa, Chiba”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Kamogawa, Chiba” 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.