Water Monitoring Maps: Stream Sites

Ambient Water Monitoring Maps of Median Concentrations for 2000-2011

A network of 80+ stream sites across Iowa have been monitored on a monthly basis since October 1999 for a variety of parameters. The maps below summarize the data from all sites by month collected from January 2000 through December 2011.

Note: All of the links in the table below will open as Adobe PDF documents for viewing, printing, or downloading.

Ammonia as N (mg/L)

Atrazine (µg/L)

Carbonaceous BOD (mg/L)

Chloride (mg/L)

Dissolved Oxygen (mg/L)

E. coli Bacteria (CFU/100ml)

Field pH

Filterable Orthophosphate as P (mg/L)

Nitrate + Nitrite as N (mg/L)

Silica as SiO₂ (mg/L)

Specific Conductance (µmhos/cm)

Sulfate (mg/L)

Total Dissolved Solids (mg/L)

Total Hardness (mg/L as CaCO₃)

Total Kjeldahl Nitrogen (mg/L)

Total Phosphate as P (mg/L)

Total Suspended Solids (mg/L)

Turbidity (NTU)