南水北调渠首
南阳是中国南水北调中线工程的渠首所在地和重要水源地，是总干渠沿线线路最长、移民最多、环保任务最重、工程量最大的省辖市，在中线工程建设中占有极其重要的地位。
水源工程（库区、渠首工程）：丹江大坝加高后，正常蓄水位由157米升至170米，增加库容约116亿立方米，总库容达到290.5亿立方米。南阳库区新增淹没面积143.9平方公里，淅川县需移民近16万人。正常蓄水位南阳水域面积达506平方公里，占库区水域总面积的半壁江山。
输水总干渠（南阳段）工程：中线工程总干渠从南阳淅川九重镇陶岔渠首闸引水北送至京、津地区，途经南阳市淅川、邓州、镇平、卧龙、宛城、方城和高新区7个县市区，26个乡镇，全长185.3公里，约占河南省总长的1/4，中线总长的1/7，渠道最大宽度350米，最小宽度97米，最大挖深47米，渠底宽10.5～25米。渠线永久占地4.14万亩，临时用地7.19万亩，干渠建设需动迁人口2330人。
鸟瞰库区
库区环保工程：为确保中线工程水源地清水长存、永续北送，南阳市着力加强水源地环境保护工作。2003年以来，先后制定出台了《南阳市清理整顿违法排污企业、重点流域水污染防治暨南水北调中线工程水源地水质保护实施方案》等一系列规划、措施，建立了“绿色GDP”考核评价体系。大力推进产业结构调整，162.2万亩无公害农产品生产基地通过省级认定。开展了大规模的污染源整治工作，有效控制了水环境的污染，严格控制新污染源的产生。不断加大小流域治理工作力度，先后完成60多条小流域治理工作，治理水土流失面积680平方公里，丹江口库区南阳区域完成人工造林65万亩，飞播造林8万亩，退耕还林29万亩，封山育林62万亩，林地面积达到535万亩，森林覆盖率达到52.8％。据随机取样检测，反映丹江水库水质的25项基本指标，除总氮一项达到国家地表水二类标准外，其余24项指标全部达到一类标准，可以直接饮用。
The Head of the Middle Route Project of
the South to North Watet Diversion Scheme
As the head of the Middle Route Project of the South to North Watet Diversion Scheme, Nanyang has the longest line of the main canal, the biggest population of the emigrants, the most significant task of environmental protection and the project, playing an outstanding role in the South--North Diversion Middle Route Project.
The Waterhead Project:
As the Danjiang Dam is heightened, the normal storage water level will be increased from 157 meters to 170 meters, enlarging the storage capacity by about 11.6 billion cubic meters to 29.05 billion cubic meters. 143.9 square kilometers will be added to Nanyang reservoir zone and nearly 160 thousand people need emigrating. At the normal storage water level, the water area of Nanyang will amount to 506 square kilometers, holding half of the reservoir water area as a whole.
The Main Canal Project:
The main canal in Nanyang draws water from the first sluice gate of Taocha Channel in Jiuchong Town of Xichuan County to Beijing and Tianjin, across 7 counties or districts, namely Xichuan, Dengzhou, Zhenping, Wolong, Fangcheng and the high-tech development zone and 26 towns, which is 185.3 kilometers in length, occupying 1/7 of the main canal. The canal is 350 meters in maximum width, 97meters in minimum width, 47 meters in maximum depth, 10.5-25 meters in width at the bottom. The canal covers 41.4 thousand mu permanently, 71.9 thousand mu temporarily and 2330 people should migrate.
The Reservoir Environmental Protection Project:
To ensure the constant supply of fresh water in the site of the Middle Route Project waterhead, the government of Nanyang City has managed to strengthen the environmental protection in the waterhead. Since the year 2003, a series of programmes and measures has been made and the evaluation system of Green GDP has been established. To rationalize the industrial structure, 10,622 million mu of no-pollution agricultural production base has passed the provincial evaluation. To control the water pollution effectively, a large-scale task of renovating pollution sources has been carried out. The administration of big and small drainage areas has been strengthened and 680 square kilometers of soil erosion has been harnessed. In the Dajingkou Reservoir area of Nanyang, 650 thousand mu artificial forest has been completed, 80 thousand mu by air seeding, 290 thousand mu by returning land from farming to forestry and 620 thousand mu through closed forestry, the general forest area reaching 5.35 million mu. According to the random sample inspection of the 25 indexes, showing the water quality, 24 ones reach the national first class standard of surface water, except the nitrogen, reaching the second class.
