Rivers of Thailand

Storage dam

Prasae Reservoir

อ่างเก็บน้ำประแสร์

Prasae Reservoir is a storage dam in Wang Chan District, Rayong province. Its reservoir holds 295 million m³. It is run by the Royal Irrigation Department.

Reservoir storage today

114.6% of capacity at normal storage level

Water in the reservoir
338 million m³
Inflow
33.2 million m³ a day
Released
33.2 million m³ a day

As of 29 Sep 2026 Data from the National Hydroinformatics Data Center (ThaiWater), HII, refreshed every 10 minutes

Map of Prasae ReservoirRayongPrasae Reservoir
The red dot is the dam; the dark line is the river it stands on.

Key facts

Location
Wang Chan District, Rayong province
Coordinates
12.9772, 101.5583
Reservoir capacity
295 million m³
Operator
Royal Irrigation Department

Frequently asked questions

Where is Prasae Reservoir?
Prasae Reservoir is in Wang Chan District, Rayong province.
What is the water level of Prasae Reservoir today?
Prasae Reservoir is 114.6% full, holding 338 million m³, as of 29 Sep 2026.
How much water can Prasae Reservoir hold?
The reservoir of Prasae Reservoir holds 295 million m³.
Who runs Prasae Reservoir?
Prasae Reservoir is run by the Royal Irrigation Department.
What is the Prasae Reservoir called in Thai?
In Thai the Prasae Reservoir is อ่างเก็บน้ำประแสร์.