Preserve, Protect and improve the big eau pleine reservoir
Blue is 10 ppm (mg/L) of oxygen
Green is 5 ppm (mg/L) of oxygen
Red is 3 ppm (mg/L) of oxygen
Black is 1 ppm (mg/L) of oxygen
WVIC measures the oxygen saturation throughout the Big Eau Pleine under the ice and reports weekly. Isopleths are a graphic representation of the oxygen levels at 1 mile increments throughout the flowage.