Phosphorus Monitoring in the Upper Mississippi River Basin

Search button


Surface Water Monitoring
Groundwater Monitoring

About the Map

Zoom in and click on points to see more detail about each water monitoring location from 2012 to 2019. Data taken from various federal and state government agencies (table below).

Resource Agency Nitrogen characteristic Phosphorus characteristic
Drinking water USEPA Safe Drinking Water Information System (SDWIS) Nitrate as N N/A
Groundwater USGS, Iowa DNR, Wisconsin DNR, Minnesota DNR and Illinois State Water Survey Total nitrate, Dissolved nitrate Total phosphorus, Dissolved phosphorus, Total phosphorus-phosphate
Surface water USGS, EPA Total nitrate, Dissolved nitrate Total phosphorus, Total phosphorus-phosphate

Use the monitoring station sliders on the left to query water contamination levels. Toggle monitoring layers on and off using the green switch above the slider. The sliders below allow users to query counties by the percent of cropland that received fertilizer or manure and has been harvested. Data taken from the USDA’s 2017 Census of Agriculture.

Hit the ‘reset slider’ button to start a new query.

Search by Zip Code

Please type below a 5-digit Zip Code, then click on "SEARCH"