Groundwater | Current State

Almost 80% of mean annual groundwater levels were at or below the 25th percentile in 2024 WY. Fifteen out of the 29 reporting wells fell at or below the 10th percentile. Wells in southern Indiana were consistently drier than normal, with most of the wells experiencing normal or wetter than normal conditions were in the northern or central parts of the state. The Lake County monitoring well was above the 75th percentile for mean, maximum and minimum water storage, but was normal by the end of the year. Note that maximum water storage occurs when the water table is highest so the most water is stored in the aquifer. The monitoring well in Marion County was normal for all categories in WY 2024. Three wells (in Deleware, Cass and Lake counties) experienced increases in minimum water storage (lowest water table), and also ended the year somewhat wetter than average. Of the three, only Deleware County ended the year above the 75th percentile. Twenty of the 29 monitoring wells experienced a decrease in water table range (the difference between annual maximums and minimums), mostly in the south and east of the state.

The Groundwater Current State webmap displays groundwater metrics based on monitoring wells within the state of Indiana with at least 30 years of observations. Several water level metrics are available for display to provide a visual representation of the current state of Indiana groundwater resources. These metrics include depth to the water table for the most recent water year as well as percentiles to convey how the most recent water year compares to the 29 previous water years at each of the sites. Descriptions of the various layers present in the webmap can be seen at the bottom of this page.