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Home > Ag Chemicals & Fertilizers > Fertilizers > Nutrient Management > 2015 Nitrogen Fertilizer Management Plan > Mitigation > Draft Groundwater Protection Rule > Part 1 of the Rule > Draft Vulnerable Groundwater Area Map

Draft Vulnerable Groundwater Area Map

The application of nitrogen fertilizer in the fall or on frozen soils will be restricted to quarter-sections of land where 50% or more of the quarter-section is in an area with vulnerable groundwater and in DWSMAs that have nitrate-nitrogen concentrations at or in excess of 5.4 mg/L nitrate-nitrogen. An area with vulnerable groundwater is an area where nitrate can move easily through soil and into groundwater, contaminating drinking water sources. Vulnerable areas for Part 1 of the rule are defined as:

View the interactive Draft Vulnerable Groundwater Area Map To access all of the mapping layers select the layer list icon in the upper left corner of the map page. To view a layer, check the box to the left of the layer title.

The map shapefiles can be downloaded from the Minnesota Geospatial Commons.

Map of Minnesota depicting the draft vulnerable groundwater areas. Areas of greatest concentration are locates in southeast Minnesota and the central region of the state.

MDA Contact

Larry Gunderson
Fertilizer Technical Unit Supervisor

Pesticide & Fertilizer Management Division