CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Pa Sak Jolasid Dam

dam in Thailand

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 1, 2026
Entity authorityQ4923211 ↗
Source-derived summary

The Pa Sak Jolasid Dam or Pa Sak Cholasit Dam (Thai: เขื่อนป่าสักชลสิทธิ์, RTGS: Khuean Pa Sak Chonlasit pronounced [kʰɯ̀a̯n pàː sàk t͡ɕʰōn.lā.sìt]) impounds the Pa Sak River at Ban Kaeng Suea Ten, Tambon Nong Bua, Phatthana Nikhom District, Lopburi Province, and Ban Kham Phran, Tambon Kham Phran, Wang Muang District, Saraburi Province, Thailand. It is the biggest reservoir in central Thailand.

The 4,860-meter (15,940 ft) wide and 36.5-meter (120 ft) high dam is earth-filled with an impervious core. The storage capacity is 785 million m3 of water at normal water level, with a maximum capacity of 960 million m3. The dam also supplies about 6.7 MW of hydro-electric power.

History

The Pa Sak Cholasit Dam Project is one of the major irrigation projects of Thailand, providing water to the plantations in the Pa Sak valley and lower Chao Phraya valley. The dam also decreases problems of water management in Bangkok by permitting more flood control, as the Pa Sak river was one of the main sources of flooding in the Bangkok metropolitan area.

King Bhumibol Adulyadej initiated a project to develop the Pa Sak River valley and lower Chao Phraya valley on 19 February 1989 as part of the Maenam Pa Sak Royal Development Project. On 4 July 1991 Prime Minister Anand Panyarachun set up a study group for the dam project. Princess Maha Chakri Sirindhorn presided over a royal ceremony on 15 June 1998, starting the storing of water in the reservoir.

Editorial summary

The public source identifies “Pa Sak Jolasid Dam” as dam in Thailand. This brief keeps that definition visible, then builds a research path around Jolasid and Thailand.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1989, 1991, 1998—that can be checked directly. The linked authority record independently contributes the date 1999-01-01. Its value is orientation rather than verdict, with Jolasid and Thailand providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Pa Sak Jolasid Dam”, the useful work is to connect “dam in Thailand” to the records capable of establishing context and consequence.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 1, 2026. The linked authority identifier is Q4923211. Authority coordinates are 14.861, 101.066. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1989, 1991 and 1998.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Pa Sak Jolasid Dam”, its source revision and the description used here.
  2. Expand the search: follow Pa Sak Jolasid Dam primary sources, Pa Sak Jolasid Dam archive and Jolasid research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Pa Sak Jolasid Dam”?
  2. What terminology or title could unlock a more precise catalogue search?
  3. Which institution is responsible for the underlying evidence?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Pa Sak Jolasid Dam” 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.