Huai Sala Reservoir is an irrigation project that plays an important role in water resource management for Phu Sing District and the border areas of Sisaket Province. It serves as a key water storage reservoir, receiving runoff from the Phanom Dong Rak mountain range, which forms a natural watershed boundary between Thailand and Cambodia.The reservoir area is characterized by a wide basin surrounded by complex mountain ranges, creating a highly natural “basin-like lake in a valley” landscape. The water body is not only used for irrigation purposes but also supports the surrounding ecosystem by maintaining forest moisture, serving as a water source for wildlife, and sustaining downstream agricultural communities.

Hydrologically, the water level changes significantly with the seasons. During the rainy season, inflow increases substantially, expanding the water surface and connecting with multiple tributary streams. In the dry season, the water level drops noticeably, revealing shorelines, sandy patches, and rock formations that become recreational walking and resting areas for visitors.The surrounding climate is influenced by monsoon winds and the area’s elevation. In the cool season, the weather is pleasantly cool with steady winds throughout the day, making the reservoir a popular camping destination for nature lovers. The late rainy to early cool season is especially attractive due to high humidity, clear skies, and vibrant sunset colors.

In terms of tourism, Huai Sala Reservoir also serves as a link between cultural and religious attractions in the region, such as Wat Phrai Phatthana (Luang Pu Suang) and the Chong Sa Ngam border checkpoint. This allows visitors to plan convenient one-day or overnight trips that combine nature and cultural experiences.Although the area remains largely natural and relatively undeveloped, tourism activities are gradually increasing, particularly lakeside recreation, camping, and landscape photography. These activities take place in a setting that is still largely untouched by urban development, giving the reservoir its distinctive identity as a “natural and peaceful wilderness-style reservoir” in Sisaket Province.

---

How to Get There

• By car: From Sisaket city center, take Highway 220 towards Khukhan District, then continue onto Highway 2127 heading to Phu Sing District. After that, proceed to Khok Tan Subdistrict. The route is clearly signposted along the way.

---

Travel Tips

• The best time to visit for sunset viewing is between 4:30 PM and 6:30 PM.

• Visitors who plan to stay overnight should bring a flashlight or camping light and mosquito repellent.

• It is possible to combine this trip with Wat Phrai Phatthana and the Chong Sa Ngam viewpoint in a single day.

• Some areas along the reservoir can be windy, so it is recommended to choose a safe and stable camping spot.

---

Admission Fee:

• Free of charge (public area with no admission fee).

• Some private camping zones around the reservoir may charge additional service fees.

Opening Hours:

• Open daily from 06:00 AM to 06:30 PM for general visitors.

• Overnight stays are allowed 24 hours in designated camping areas where permitted.