This study uses satellite imagery and the HSV color model to assess pit lake water
quality.
Water color results from sunlight interactions influenced by dissolved ions and suspended particles. Transition metals form distinct complexes (Fe2+: olive green, Cu2+: blue-green, Fe3+: brown-yellow), while oxyhydroxide colloids scatter specific wavelengths (Fe: red-orange, Al: white).
Because pH and redox conditions affect ion complexation and mineral phase formation, HSV variations can reflect physicochemical changes.
Validation at Berkeley Pit Lake showed correlations between satellite-derived HSV
and known events. The method is being applied to Chilean pit lakes for environmental monitoring, aiding early detection of environmental changes.
