Khao Ruak Reservoir is like a hidden oasis located within Namtok Sam Lan National Park and is the first spot visitors encounter upon entering the park. The reservoir’s clear and calm water reflects the surrounding lush green trees and mountain ranges, creating a peaceful and refreshing atmosphere that is ideal for relaxation.

The area around Khao Ruak Reservoir is a popular photography spot, thanks to its scenic views of the water contrasting beautifully with the forest and mountains. It is especially suitable for visitors seeking tranquility and a close connection with nature away from the hustle and bustle of the city.

Popular activities at Khao Ruak Reservoir include camping, with designated camping grounds provided by the national park along the reservoir’s edge. At night, the atmosphere is quiet and cool, making it perfect for groups of friends and families to enjoy an overnight stay in nature.

Kayaking and water biking are also popular activities, with rental services available for visitors to paddle around the reservoir. These activities allow travelers to experience the surrounding natural scenery up close while enjoying the serenity of the water.

Khao Ruak Reservoir also serves as a starting point for nature trails and hiking routes that connect to key attractions within Namtok Sam Lan National Park, such as Sam Lan Waterfall, Pho Hin Dat Waterfall, and Ton Rak Waterfall, offering a variety of activities within a single area.

The area surrounding the reservoir is well maintained, clean, and safe, with basic facilities such as restrooms and a park welfare shop. This makes Khao Ruak Reservoir an ideal destination for nature-based relaxation and a popular short getaway close to Bangkok.

Private Car:

• From Saraburi town, take Phahonyothin Road toward Bangkok, then turn left onto Highway 3042 toward Namtok Sam Lan National Park. Drive through the park’s entrance gate; the reservoir is located just past the visitor center.

Location:

• Situated within Namtok Sam Lan National Park, near Phra Phutthachai Temple.

Preparation:

• If you plan to camp, it is recommended to book in advance via the National Park's system, especially during long holidays.

Wildlife:

• You may spot peacocks or wild pheasants wandering near the reservoir. Please refrain from feeding the wildlife.

Best Time:

• Early morning is the most beautiful time to see the mist over the water and listen to the forest birds.

Admission Fee

• Included in the Namtok Sam Lan National Park entry fee

• Thai: Adult 20 THB, Child 10 THB

• Foreigner: Adult 100 THB, Child 50 THB

Opening Hours:

• Open daily: 08:00 – 18:00 (for general visitors); 24 hours for overnight campers.