Dam · Surat Thani
Ratchaprapha Dam Water Level Today
Ratchaprapha Dam (also known as Chiao Lan Dam) is in Surat Thani Province, in the Upper Southern East Coast basin · Its normal storage capacity is 5,639 million m³
74.2% Moderate
74.2% of capacity · inflow exceeds release · up 3.02 million m³ from the previous day ·
- Water volume 4,187 million m³
- Inflow 6.40 million m³
- Release 3.01 million m³
- Usable water 2,835 million m³
- Normal storage capacity 5,639 million m³
As of 5 Oct it holds 4,187 million m³, 74.2% of capacity, in the "Moderate" class, and that day inflow exceeds release · Usable water of 2,835 million m³ is the part that can actually be released, excluding the dead storage that always stays in the reservoir
See all dams → · Water levels in Surat Thani Province → · South
Statistics and analysis on this page are for reference only and are not an official warning.
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Ratchaprapha Dam storage history
Last 30 days · high 74.2% · low 66.3% · latest 74.2% of capacity
- Above capacityAbove 100%
- High80–100%
- Moderate50–80%
- Low30–50%
- Critically lowUp to 30%
| Date | Storage (% of capacity) | Volume (million m³) | Inflow | Release |
|---|---|---|---|---|
| 74.2% | 4,187 | 6.40 | 3.01 | |
| 74.2% | 4,184 | 6.84 | 3.46 | |
| 74.1% | 4,181 | 8.43 | 3.54 | |
| 74.1% | 4,176 | 8.36 | 3.46 | |
| 74.0% | 4,172 | 11.44 | 3.56 | |
| 73.8% | 4,164 | 11.49 | 5.11 | |
| 73.7% | 4,158 | 12.82 | 3.44 | |
| 73.6% | 4,149 | 19.85 | 2.99 | |
| 73.3% | 4,133 | 9.84 | 3.49 | |
| 73.2% | 4,127 | 10.86 | 3.02 | |
| 73.0% | 4,119 | 13.98 | 1.67 | |
| 72.8% | 4,107 | 17.84 | 2.58 | |
| 72.6% | 4,092 | 13.26 | 1.01 | |
| 72.4% | 4,080 | 18.15 | 0.00 | |
| 72.0% | 4,063 | 26.95 | 0.00 | |
| 71.6% | 4,036 | 56.13 | 0.00 | |
| 70.6% | 3,980 | 109.0 | 0.00 | |
| 68.7% | 3,872 | 22.55 | 3.56 | |
| 68.3% | 3,853 | 13.78 | 3.41 | |
| 68.2% | 3,843 | 9.63 | 3.56 | |
| 68.0% | 3,837 | 14.32 | 3.98 | |
| 67.9% | 3,827 | 14.05 | 3.73 | |
| 67.7% | 3,817 | 15.29 | 3.56 | |
| 67.5% | 3,806 | 29.26 | 3.38 | |
| 67.0% | 3,780 | 22.21 | 3.49 | |
| 66.7% | 3,762 | 12.31 | 3.50 | |
| 66.6% | 3,754 | 8.21 | 3.64 | |
| 66.5% | 3,749 | 10.86 | 3.48 | |
| 66.4% | 3,742 | 9.03 | 3.06 | |
| 66.3% | 3,737 | 12.27 | 3.50 |
Ratchaprapha Dam compared with other dams
Ratchaprapha Dam is at 74.2% of capacity, ranked 22 of 35 major dams from fullest to lowest, while all dams combined are at 82.4% of capacity
Other dams in the South
- Pranburi 82.5% High · 398 km away
- Bang Lang 51.4% Moderate · 432 km away
- Kaeng Krachan 102.2% Above capacity · 442 km away
Rain in Surat Thani Province
In the past 24 hours 140 rain gauges in Surat Thani Province reported; the most was ~56.0 mm at สถานีวัดสองพี่น้อง, and 3 gauges recorded heavy rain or more (latest reading 15:00)
Rain over the catchment above the dam raises inflow over the following days, so it is worth reading rainfall together with the inflow figures
See rainfall nationwide → · Water levels in Surat Thani Province →
Map of Ratchaprapha Dam and nearby river gauges
Map © OpenStreetMap
River gauges near the dam
The nearest gauge is สะพานคลองแสง อ.บ้านตาขุน, 18.9 km away, currently Low
Gauges within 40 km of the dam (straight-line distance), nearest first
| Station | River | Status | Distance (km) |
|---|---|---|---|
| สะพานคลองแสง อ.บ้านตาขุน | – | Low | 18.9 |
| Ban Pak Suat Community Bridge | คลองบางครก | Critically Low | 24.7 |
| Khlong Phai Bridge | ห้วยแวัะ | Low | 27.1 |
| สะพานพุมดวง (วัดตาขุน) อ.บ้านตาขุน | – | Low | 28.2 |
| Ban Khlong Mui 13 | คลองมุย | Critically Low | 29.9 |
| สะพานเชี่ยวไทร อ.พนม | – | Normal | 31.3 |
| สะพานท่าขนอน (วัดปราการ)อ.คีรีรัฐนิคม (X.36) | – | Normal | 33.0 |
| Tapi 4 | แม่น้ำพุมดวง | Normal | 33.0 |
FAQ
How much water is in Ratchaprapha Dam now?
As of 5 Oct, Ratchaprapha Dam holds 4,187 million m³, 74.2% of capacity (Moderate). That day inflow was 6.40 million m³ and release 3.01 million m³.
Is the water in Ratchaprapha Dam rising or falling?
up 3.02 million m³ from the previous day · inflow exceeds release
Where is Ratchaprapha Dam and how big is it?
Ratchaprapha Dam (also known as Chiao Lan Dam) is in Surat Thani Province, in the Upper Southern East Coast basin · Its normal storage capacity is 5,639 million m³
Can this be used as an official warning?
No. This site is for monitoring only. For warnings and dam releases, follow announcements from local government agencies.