Hydrologic (discharge, level, pressure, voltage, electrical conductivity, and temperature) and atmospheric (pressure and temperature) data from injection experiments and a rain event at Bear Spring, MN, USA – June 10-12, 2016

We conducted water injection experiments at Bear Spring in southeastern Minnesota. We injected water from a pool into the overflow spring and monitored hydrologic responses at the perennial spring. The experiments were conducted to monitor for seismic signals as water flows through the karst aquifer, and all corresponding seismic data are provided in Bilek (2016). The experiments confirmed that the overflow spring and perennial spring were connected by at least one conduit in the karst aquifer. The overflow spring was dry for the first two experiments, but it started flowing after a large rainfall event. Because the overflow spring was flowing during the third experiment, the water from the pool simply flowed across the overflow spring run instead of entering the conduit. The hydrologic data are provided that illustrate the response to the three injection experiments and the rain event. Information about the field site and the methods are described below.