With the spring equinox on March 20, Wisconsin’s rainy season began, along with rising temperatures and the final days of snow. The warming temperatures of spring, melting snow and precipitation prime much of Southern Wisconsin for sinkholes, according to University of Wisconsin hydrogeologist Maureen Muldoon. In fact, a sinkhole opened up in January at Indianford … Continue reading Springing into Sinkholes: How spring sets stage for sinkhole formation