The dam is part of the Mae Ngat-Mae Kuang Water Transmission Tunnel project, designed to transfer water between two major river basins.
The reservoir is officially situated within the protected boundaries of Si Lanna National Park.
The construction of the dam created the Mae Ngat Valley reservoir, which partially submerged former lowland forest areas.
The water level in the reservoir fluctuates significantly based on the monsoon cycle and agricultural irrigation demands.
The reservoir acts as a habitat for various freshwater species, which support a small-scale local fishing industry.
Mae Ngat Sombun Chon Dam is a large irrigation reservoir located within the Si Lanna National Park in Chiang Mai Province. The dam is an earth-fill structure built across the Mae Ngat River, creating a vast water body suitable for motorized boat excursions. Floating raft houses offer overnight accommodation and dining options directly on the water. Visitors can access the interior of the reservoir by taking a long-tail boat from the dam's main pier. The area serves as a significant source of water for local agricultural activities in the Mae Taeng district. Several floating restaurants serve locally sourced freshwater fish and regional Thai dishes.
The upper deck of a long-tail boat during the transit toward the deeper sections of the reservoir.
Book a boat in advance at the pier if you plan to visit the more remote raft houses.
Bring a waterproof bag for electronic devices to protect them during the boat transfer.
Ensure you have sufficient mosquito repellent, as the lake environment is prone to insects at dawn and dusk.
Avoid visiting during the peak of the dry season (April-May) if you prefer high water levels for swimming.
Boat services may be suspended during extreme weather conditions or severe storm warnings.
Maintain a respectful noise level when staying in floating houses; swim only in designated safe areas.
