Percent of water samples violating water quality standard

Redwood River near Redwood Falls
Parameter WQ Standard Mar-Apr May-Jun Jul-Aug Sep-Oct Winter All data
               
Total Phosphorus none* 47 41 69 40 67 52
Fecal Coliform 200 CFU/100 mL 27 44 58 26 39 39
Nitrate & Nitrite -N 10 mg/L 4 3 3 10 0 4
Turbidity 25 NTU 17 11 0 0 0 5
Dissolved Oxygen 5 mg/L 0 3 0 0 0 1
BOD5 5 mg/L 38 30 29 3 30 25
* Values in this row represent the percent of samples that exceed 0.25 mg/L, the mean concentration of total phosphorus in the Minnesota River.


Last Updated on 11/2/97
By Ananda Mallawatantri
Email: ananda@soils.umn.edu