Dexter Pit Lake 1999 to 2017

Residual pit lakes from mining are often dangerous to sample for water quality. Thus, pit lakes may be rarely (or never) sampled. Water-sampling devices were mounted on an unmanned aerial vehicle (UAV) to improve safety and efficiency during water sampling. The current conditions of the Dexter pit lake were assessed by examining cation and anion concentration trends over a 17-year time period since the pit lake was last sampled in 2000. We compared our 2017 sampling data to prior water-quality data from the Dexter pit lake received from the authors of Balistrieri et al. (2006). This comparison for the Dexter pit lake showed the effect of evapoconcentration in increasing cation and anion concentrations.