Watonwan River near Garden City
Parameter	WQ Standard	Mar-Apr	May-Jun	Jul-Aug	Sep-Oct	Winter	All data

Total Phosphorus	none*	66	46	58	44	43	52
Fecal Coliform	200 CFU/100 mL	38	55	59	40	54	49
Nitrate & Nitrite -N	10 mg/L	22	33	16	5	8	17
Turbidity	25 NTU	25	47	28	11	0	19
Dissolved Oxygen	5 mg/L	0	0	0	0	20	5
BOD5	5 mg/L	16	21	42	19	17	23

* 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