Qualla: Nong Han Lake

Nong Han Lake: Introduction

Mon, 17 Aug 2026 00:00:00 GMT

Before Sakon Nakhon was Sakon Nakhon, it was Nong Han Luang — and in the stories told around this lake, Nong Han Luang is not a former name but a place, a city that is still down there. The Isan epic of Phadaeng and Nang Ai explains how it got there: a naga prince from an underwater kingdom disguises himself as a white squirrel to be near a princess, is shot by a hunter, and his meat is shared out among the villages. When the nagas discover what has been eaten, they come up through the ground and pull the whole city under. What is left is the water you are looking at.

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Nong Han Lake: Thirty Islands and a Drowned Kingdom

Mon, 17 Aug 2026 00:00:00 GMT

More than thirty islands break the surface of Nong Han, and the largest of them, Don Sawan, carries the ruins of old Buddhist structures — enough that the island has archaeological weight as well as a good name, since don sawan means something close to heavenly mound. English sou...

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Nong Han Lake: The Geology Half Agrees

Mon, 17 Aug 2026 00:00:00 GMT

There is a version of the story that geologists tell, and it is not entirely different. The Khorat Plateau lies over thick beds of rock salt. Groundwater dissolves the salt, cavities open underground, and eventually the ground above them subsides — collapse basins forming slowly ...

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Nong Han Lake: One River In, One River Out

Mon, 17 Aug 2026 00:00:00 GMT

The Nam Pung comes down off the Phu Phan mountains to the south and fills the lake. The Huai Nam Khan drains it to the southeast, eventually delivering the water to the Mekong and, a long way further on, the South China Sea. Between those two points the lake spreads across a doze...

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Nong Han Lake: What a Quarter of a Million People Take From It

Mon, 17 Aug 2026 00:00:00 GMT

Roughly 240,000 people in some 80,000 households across thirty-two subdistricts depend on Nong Han in one way or another — for irrigation, for household water, for fish. About a fifth of the catch is Puntius brevis, a small silver barb that ends up grilled, fermented, pounded int...

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Nong Han Lake: The Thing in the Fish

Mon, 17 Aug 2026 00:00:00 GMT

Do not swim in Nong Han. The warning is standard in local guidance, and the reason is a flatworm called Opisthorchis viverrini, the Southeast Asian liver fluke, which cycles between snails, freshwater cyprinid fish and people. Infection comes overwhelmingly from eating the fish r...

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