The links to the maps below provide landowners and water users a unique “inside” look into the District’s groundwater and aquifer patterns.

In aquifers, groundwater behaves much like surface water in its patterns of flow. For instance, the water table surface, in porous ground such as sand and gravel, generally follows the topography of the land. Similar to surface water flowing from the top of a hill down into a stream valley, groundwater flows from the groundwater divide to the lower groundwater elevations. The difference between the flow of water from high to low in the underground is that it is measured in terms of years.

The data is compiled from measurements of more than 200 wells throughout the District taken in the Fall and Spring every year. The measurements are then converted into the contour maps which are provided as links below.

The District updates this information annually and uses the data for long-term planning. If you have any questions, or would like copies of the data, please contact the office.