Preserve, Protect and improve the big eau pleine reservoir

 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.

Click Here to see the Isopleths.


  • Hwy O bridge: 2 miles

  • Aerator: 5.6 miles

  • Hwy S bridge: 11 miles

  • Oxbo: 13 miles

  • Balsam/Spindler bridge: 18 miles

Map Key

  • 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

Water Quality