The United State Geological Survey (USGS) maintains a database of approximately 850,000 wells across the Nation. As a part of this effort, some 18,000 wells have water level and well information measured and aggregated into a media friendly GIF or GIS file known as the “Active Groundwater Level Network.” (Wells in the network have been monitored at least once within the past 13 months).
Taking and storing these measurements serves a variety of purposes, such as statewide monitoring programs, or more local effects like monitoring well drawdown, hydrologic research, aquifer tests, or even earthquake effects on water levels.
Visit the network to obtain information which can be used to educate communities and protect drinking water sources.