The national groundwater monitoring project will jointly be finished by Ministry of Water Resources and Ministry of Land and Resources with 20 401 monitoring stations being built, in which 10 298 monitoring stations will built by Ministry of Water Resources and 10 103 monitoring stations will be built by Ministry of Land and Resources. The effective monitoring area is 350×104 km2 . The layout of the station network followsthe principle “meeting the needs, inheritance and development, overall layout, highlighting priorities, being convenient to manage, and avoiding repeated construction”. The overall layout will be made in the areas of basic types, including plains and basins with the groundwater development and utilization, potential development and geological environment protection. The high density layout will bemade in the areas of special types, including the areas of groundwater overdraft and groundwater drinking water sources, areas along the middle line of the South-toNorth Water Transfer Project, and sea intrusion zone. According to the plan of the national groundwater monitoring project, the average density of the monitoring station network will reach 5.8 stations / 103 km2 .The station network can basically meet the requirements of the development, utilization, management and geological environment protection of the groundwater resources.