Rivers of Thailand

Storage dam

Nong Pla Lai Reservoir

อ่างเก็บน้ำหนองปลาไหล

Nong Pla Lai Reservoir is a storage dam in Pluak Daeng District, Rayong province. Its reservoir holds 164 million m³. It is run by the Royal Irrigation Department.

Reservoir storage today

108.9% of capacity at normal storage level

Water in the reservoir
178 million m³
Usable water
165 million m³ (109.7% of usable capacity)
Inflow
0.6 million m³ a day
Released
0.6 million m³ a day

As of 14 Nov 2026 Data from the National Hydroinformatics Data Center (ThaiWater), HII, refreshed every 10 minutes

Storage this year and last

Down 2.2 million m³ over the last 7 days

5.5 million m³ more than on the same day last year

178 million m³JanFebMarAprMayJunJulAugSeptOctNovDec
  • 2026
  • 2025
  • Normal storage 164 million m³
  • Upper and lower rule curves

Daily storage from the National Hydroinformatics Data Center (ThaiWater). The rule curves are the range the dam is meant to be kept within through the year.

Try the reservoir

Change the inflow, the release and the rain over the dam's catchment, and see what the reservoir would do over the next 90 days, starting from today's figures.

The reservoir would hardly change

Over the next 90 days the reservoir reaches neither normal storage, a rule curve nor dead storage

In 90 days it would hold about 178 million m³ (108.7% of capacity)

TodayOctNovDecJanFeb
  • Actual storage
  • Projected
  • Normal storage
  • Upper and lower rule curves
  • Dead storage

Today's storage, plus the inflow and the rain that runs in, less the release, a day at a time; evaporation and seepage are left out. It is arithmetic on the figures you set, not a forecast.

Map of Nong Pla Lai ReservoirChon BuriRayongNong Pla Lai Reservoir
The red dot is the dam; the dark line is the river it stands on.

Key facts

Location
Pluak Daeng District, Rayong province
Coordinates
12.9346, 101.2970
Reservoir capacity
164 million m³
Maximum capacity
206 million m³
Dead storage
13.5 million m³
Operator
Royal Irrigation Department

Maximum capacity and dead storage from the Royal Irrigation Department

Frequently asked questions

Where is Nong Pla Lai Reservoir?
Nong Pla Lai Reservoir is in Pluak Daeng District, Rayong province.
What is the water level of Nong Pla Lai Reservoir today?
Nong Pla Lai Reservoir is 108.9% full, holding 178 million m³, as of 14 Nov 2026.
How much water can Nong Pla Lai Reservoir hold?
The reservoir of Nong Pla Lai Reservoir holds 164 million m³.
Who runs Nong Pla Lai Reservoir?
Nong Pla Lai Reservoir is run by the Royal Irrigation Department.
What is the Nong Pla Lai Reservoir called in Thai?
In Thai the Nong Pla Lai Reservoir is อ่างเก็บน้ำหนองปลาไหล.