Nam Un
Northeast
Capacity
520 hm³
Coordinates
17.309°N, 103.743°E
Operator
Royal Irrigation Department (RID)
59.9% full
Current fill
59.9%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Drought context
Rain over the last three months · 1 October 2026
Near normal
In the three months to 1 October 2026 the area around Nam Un had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +0.40). Rain, not storage. Thailand drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 520 hm³ |
| Usable capacity | 520 hm³ |
| Primary use | Irrigation |
| Operator | Royal Irrigation Department (RID) |
| Province | Northeast |
| River basin |
About Nam Un
As of October 20, 2026, Nam Un is filled to 59.9% of its total capacity, holding roughly 311 hm³ of water out of a maximum 520 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Nam Un — 2 data points between October 19, 2026 and October 20, 2026 — the level has ranged from a low of 59.9% (October 20, 2026) to a high of 60.3% (October 19, 2026).
It is operated by Royal Irrigation Department (RID) primarily for irrigation.
Key facts
- Current fill level
- 59.9%
- Water stored
- 311 hm³
- Total capacity
- 520 hm³
- 7-day change
- No change
- Primary use
- Irrigation
- Operator
- Royal Irrigation Department (RID)
- Coordinates
- 17.309°N, 103.743°E
- Last updated
- October 20, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 20 Oct 2026 | 59.9% | 311 |
| 19 Oct 2026 | 60.3% | 314 |