Percent of water samples violating water quality standard

Blue Earth River near Mankato
Parameter WQ Standard Mar-Apr May-Jun Jul-Aug Sep-Oct Winter All data
               
Total Phosphorus none* 57 51 50 28 17 40
Fecal Coliform 200 CFU/100 mL 41 40 64 51 31 45
Nitrate & Nitrite -N 10 mg/L 29 52 13 11 13 23
Turbidity 25 NTU 55 64 56 19 4 35
Dissolved Oxygen 5 mg/L 0 0 0 0 0 0
BOD5 5 mg/L 16 32 41 36 14 28
* 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