The Huai Tha Khai Reservoir is located in Baan Phu Nam Ron, Tambon Ban Bueng, Amphoe Ban Kha, Ratchaburi Province. This earthen dam reservoir was constructed under the initiative of King Rama IX. The surrounding area is enveloped by mountains, creating a breathtaking landscape, especially during the evening when the sun sets. The Huai Tha Khai Reservoir is also in close proximity to the Pongkrating Hot Springs.