11/19/2025
In general, precipitation in Kansas is greatest in the east and gradually declines westward. The wettest spot, on average, gets 45 inches per year and the driest less than 20 inches. As a result, eastern Kansas has more surface water such as rivers, creeks, lakes, and wetlands. This precipitation diversity is one of the principal reasons why eastern Kansans get most of their water from the surface compared to the west which rely on ground water.
Map via Department of Agronomy from Kansas State University
