Percent of water samples violating water quality standard

Blue Earth River near Blue Earth
Parameter WQ Standard Mar-Apr May-Jun Jul-Aug Sep-Oct Winter All data
               
Total Phosphorus none* 41 38 28 20 12 26
Fecal Coliform 200 CFU/100 mL 59 83 96 76 54 73
Nitrate & Nitrite -N 10 mg/L 38 66 38 12 10 31
Turbidity 25 NTU 22 34 31 16 2 19
Dissolved Oxygen 5 mg/L 5 0 0 0 13 4
BOD5 5 mg/L 13 24 5 5 4 10
* 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