Nanming Lake runs through Oujiang River, the second longest river in Zhejiang Province, in Lishui. Originated at the northern foot of baishanzu at the junction of Qingyuan and Longquan, it flows from west to east through Qingyuan, Longquan, Yunhe, Lishui, Qingtian, Yongjia, Ouhai, Lucheng and Longwan, leaving Wenzhou Bay and entering the East China Sea. Its main stream is 388 kilometers long, commonly known as "800 Li Oujiang River". Oujiang belongs to the subtropical monsoon climate zone, which is warm and humid with four distinct seasons. The average annual temperature is about 65438 08℃. There is abundant rainfall, with an average rainfall of 1745.8 mm, among which the Oujiang River in the dam section from Subu to Tankaishui Power Station in Lishui has formed a huge artificial lake named Nanming Lake due to the water storage of Tan Kai Water Control Project. The coastline of Nanming Lake is about 16 km long, and the width of the lake varies from 200 to 400 meters. The water area of the lake area will reach 5.6 square kilometers, which is equivalent to the water area of West Lake in Hangzhou. The tributaries flowing into Nanming Lake mainly include Haoxi and Xuanpingxi.

Nanming Lake is located in the middle reaches of Oujiang River, running through Lishui City, with beautiful natural scenery along the line, which brings together many natural water elements such as Daxi, Haoxi, Pipawei, Zhonganwei and Gucheng Island. The water quality in the lake area is pure, and there are various waterscapes such as bays, harbors, branches, islands, dikes and beaches in the lake area. The surrounding mountains are undulating, the peaks are green, the air is fresh and the trees are lush. Its natural characteristics are beautiful, quiet and spacious, especially the wonderful water quality, wonderful environment and wonderful scenery. It has the beauty of lakes, mountains and trees, and is more distinctive than plain lakes in East China and lakes in Zhejiang Province. Nanming Lake is a landscape structure carrier with "lake, island, mountain and city" as its core resources. At the same time, the lake is rich in historical and cultural resources, with numerous cultural landscapes and historical sites, which is the most splendid section of the Oujiang River. The history of Lishui's urban development is also a history of choosing water to live in and constantly multiplying on both sides of Daxi. Nanming Lake is surrounded by lakes with profound historical and cultural accumulation, which is an important part of Lishui regional culture. For example, the ancient kiln site of Lubukeng, located between Xiaobaiyan and Pipawei, began in the late Six Dynasties and was the earliest kiln site in the middle and upper reaches of Oujiang River. Taoshan, across the river from Lubukeng Village, is surrounded by rocks, with many stone carvings and sculptures on it, followed by Sanyansi Mountain Scenic Area, which is a suburban tourist attraction. Nanming Mountain, one of the famous mountains in southern Zhejiang, is a provincial-level scenic spot. There are buildings such as Ninja Ji and Li Qianting on the mountain, among which cliff stone carvings have high social and cultural value. Wanxiangshan, which faces Nanmingshan across the river, is embedded in the urban area and connected with Fu Gang, a small broad warehouse (Xishan). This mountain overlooks the city and is close to the Oujiang River. Since the Song, Yuan, Ming and Qing Dynasties, Vientiane Building, Chongfu Temple, Yiting, Yuyan Building, Daguan Building, Qinhuai Haici Building and Dong Tian Building have been built one after another and will be rebuilt at present. On the top of the Golden Mountain on the east side of Nanming Mountain, there is a golden pagoda with a history of more than 500 years. Another ancient tower was built in the 13th year of Wanli in Ming Dynasty (AD 1585). Form a unique pattern of Nanming Lake Scenic Area with "one lake, two towers, three islands and four mountains".

Nanming Lake is the core of Lishui landscape eco-city construction. A good landscape ecological city environment is the most precious urban resource in Lishui, and it is also an important carrier of the strategy of opening to the outside world and revitalizing the city through tourism. In particular, the natural landscape and cultural background around Nanming Lake are of excellent quality, and the lakes, mountains and mountains are in harmony with the humanistic spirit. Lishui city can be described as "the city is in the mountains and the water is in the city", and Nanming Lake is like a pearl embedded in it. At present, the development and construction of Nanming Lake Scenic Area is being planned at a high standard, and relevant functional departments plan to create a national Nanming Lake Water Conservancy Scenic Area.