|Name||Steeles Branch (2) @ Highway 3|
|Notes||Part of Delaware SWCD project|
|Sampled by||Delaware County Soil and Water Conservation District|
GREEN = Better than average water quality compared to other sites in the watershed
RED = Worse than average water quality compared to other sites in the watershed
GRAY = The average value from all sites in the watershed. Useful for comparison.
|P mg/L||N mg/L||E. Coli MPN/100mL||Total Suspended Solids mg/L|
|All Years||0.15 (0.21)||11.6 (6.7)||1352 (372)||17 (29)|
|2012 Mean||0.15 (0.17)||11.6 (4.8)||1352 (374)||17 (16)|
*All averages are arithmetic means, except for E. Coli and/or Fecal Coliform, which are calculated as geometric means. For purposes of calculating a mean, values that exceed the measurement limit (e.g., <0.05, 60+, <33) are assumed to be 20% greater or less than their limit (e.g., 0.04, 72, 26.4).
For 80.0% of the data records, Nitrate+Nitrite exceeded 10 mg/L. 10 mg/L represents the U.S. Public Health Service recommended limit of 10 mg/L NO3-N (nitrate-nitrogen) in drinking water.
For 80.0% of the data records, E. coli bacteria exceeded 235 CFU/100 ml. 235 CFU/100 ml represents Iowa's single sample maximum water quality standard for primary contact recreational use (Class A1), secondary contact recreational use (Class A2), and children's recreational use (A3).
|Sample Date||Time||by||P mg/L||N mg/L||E. Coli MPN/100mL||Total Suspended Solids mg/L|