Longxing Reservoir

　　Longxing Reservoir is located south of Gangbei Village, Jinlong Town, Quannan County, Jiangxi Province, 6.5 kilometers from the county seat. The dam is 146 meters long and 32 meters high, with an overflow section 43 meters wide and a lake surface covering 1.5 square kilometers. Nestled in a valley, the reservoir features scattered islands dotting its waters. Lush green mountains line both sides of the valley, blending seamlessly with the water and sky. In spring and summer, the hillsides burst into colorful blooms while birds sing melodiously. Wild ducks, egrets, and other waterfowl can often be seen foraging and playing on the lake. In autumn, maple leaves turn a brilliant red, reflecting on the mountains and waters, creating a scene so picturesque that visitors boating on the lake feel as if they’ve stepped into a traditional Chinese painting.

　　Fish Species in the Reservoir The reservoir is home to a variety of fish species, mainly including grass carp, common carp, crucian carp, and white bream. Longxing Reservoir Drinking Water Source Protection Zone

　　Longitude of the water intake center: 114°31′11.8″; Latitude of the water intake center: 24°41′46.1″. The normal water level storage capacity of the reservoir area is 17.12 million cubic meters.

　　(1) First-Class Protection Zone: This zone covers the water area within a 500-meter radius of the water intake in the Longxing Reservoir area and the adjacent land extending inward to the mountain ridge line on both sides (including 0.27 km² of water area and 0.25 km² of land area);

　　(2) Second-Class Protection Zone: This zone includes the water area within the normal water level line of the reservoir area outside the boundary of the first-class protection zone and the adjacent land extending 200 meters inward on both sides (including 1.19 km² of water area and 1.56 km² of land area); as well as the water area extending 2,500 meters upstream from the mouth of the Luokeng tributary entering the first-class protection zone and the land area extending 200 meters inward on both sides of the river (including 0.02 km² of water area and 1.20 km² of land area).

　　The effective catchment area of Longxing Reservoir is 180 km². The surrounding land of the reservoir area is mainly forested, predominantly consisting of secondary forests of Chinese fir and pine, with broadleaf forests prevailing in the outer areas, resulting in a forest coverage rate of over 80%. There are four inflowing tributaries in total (among which the Xiaoxi River is the main stream, with an average annual flow of 4.58 m³/s, the Luokeng tributary has an average annual flow of 0.15 m³/s, the Longjingkeng tributary has an average annual flow of 0.18 m³/s, and the Hualuodong tributary has an average annual flow of 0.59 m³/s), bringing the total average annual flow to 5.50 m³/s. Testing by the Ganzhou Center for Disease Control and Prevention confirmed that the water quality at the central water intake point in the reservoir area meets the national Class II standards of the Surface Water Environmental Quality Standards.