“人工湖”位于三峡工程大坝轴线南西端白岩尖的北面，原为长江上的一支流──茅坪溪。三峡工程开工后，茅坪溪上修建了一座副坝，保住了茅坪溪上游杨贵店、九里、河口等地千余亩良田，免迁6000余人。从此上游的水顺着人们的意图乖乖地从泄水洞流人长江（三峡工程大坝下游）。 The “artificial lake” is located to the north of the west tip of the Three Gorges Dam’s Baiyanjian dam axis, originally a stream on the Yangtze River ─ Maoping River. After the Three Gorges Project started, an auxiliary dam was built on Maoping River, retaining more than 1,000 mu of fertile land in Yangguidian, Jiuli and Hekou in the upper reaches of Maoping River and exempting more than 6,000 people. Since then, the upper reaches of the Yangtze River (downstream of the Three Gorges Dam) from the drainage tunnel obey people’s intentions.