Guri City worked to improve the water quality of Jangja Lake in order to form the Jangja Lake Park and in the process an ecological zone was created. A 3.6 km tree-lined walking trail runs through the park and is frequently used by people enjoying an outing or getting some light exercise. Concerts, exhibitions, and other events are held on the outdoor stage on weekends and the park is widely used as a place to relax by local residents.

* Size - Area 107,385 m?, average water depth 2.2 m (0.2 m~4.7 m), and walkway 4.6 km