Hydrology

The ADWR eHydrology Library has information on the groundwater basins. This can be helpful if you are looking for additional information about an area or specific groundwater basin.

The Depth-To-Water (DTW) dashboard is designed to give an overview of groundwater levels in AZ's basins and sub-basins, providing summary statistics. The first page reflects discrete water level well measurements, the second page is automated water level measurements from well sites equipped with automated devices, and the final page contains references and additional information. Both data pages can be filtered based on Measurement Source, Date, Remark, and Method. The data shown has been verified against the Groundwater Site Inventory (GWSI) database (GWSI Web), and reviewed within the Field Services Section per industry data collection protocols and standards, GWSI Handbook and Field Services Section Manual).

Groundwater flow modeling is a tool that can be used to simulate the past, present and future impacts of water use on aquifers. Groundwater modeling has become an important tool in the management of Arizona’s water supplies, particularly in meeting the 1980 Groundwater Management Act’s goal of achieving Safe Yield in Active Management Areas (AMAs). Groundwater modeling allows water resource planners to make long-term management decisions based on the potential impacts of future water uses on the state’s groundwater resources.