In 2012, with funding from the Lahontan Regional Water Quality Control Board, CalTrout initiated a study in the Mammoth Lakes Basin to determine presence and extent of both nutrients and metals. After two years of research, the study found nutrients are not impacting water quality. However, the study did determine the levels of total mercury, in certain areas such as Stamp Mill, exceeded regulatory thresholds.
“Based on the data gathered thus far, I think it is prudent to conduct a more in-depth study to more accurately determine the potential scope and extent of the mercury in the Lakes Basin and particularly the Stamp Mill area,” said CalTrout Eastern Sierra Regional Manager Dr. Mark Drew.
The next step is to determine whether mercury is impacting resident fish populations and if so, determine what mitigation measures are necessary. CalTrout may be the next Erin Brokovich, for fish anyway.
For more on the study’s findings ready The Sheet’s story here.