The number of times each station is sampled per year can vary.

To access current surface water quality data and recent trends, please click a station on the map, or one of the parameters listed below.


Monitoring Station

Parameter List

Although many of these chemical elements and physical properties of water are naturally occurring, non-point source runoff, point source discharges, atmospheric deposition, and other human-influenced activities can have an effect on the overall concentrations in surface water.