Nutrient Management for Farmers

Have a 590 Nutrient Management Plan or interested to hear what is new? You're invited to the Washington/Ozaukee Farmer Update Meeting - Wed. January 23 at The Columbian in West Bend. RSVP by Fri. January 18th.


A2809-Nutrient Application Guidelines for Field, Vegetable, and Fruit Crops in Wisconsin (2016)


There are two separate environmental risks, groundwater and surface water, associated with application of nutrients. The Land & Water Conservation Division maintains a GIS layer that identifies areas that have a high risk of negative envirnomental impacts if nutrients, either organic or commercial, are applied to the soil at critical times of the year or through inappropriate application methods.

The USDA-Natural Resource Conservation Service 590 Nutrient Management Code was used as a guide for the development of this layer, which consists of the following components:

1) SOILS - < 20" to bedrock, < 12" to apparent water table, high permeability rates, steep slope of 12% or greater and planning units of >9% identified by the Land Conservation Office.

2) SURFACE WATER - areas within 300' of navigable waters (rivers and streams) and areas within 1000' of naviable waters (lakes, ponds or flowage).

As fields are walked, concentrated flow channels are identified.

Application Risk Area Maps (County GIS)
Washington County's publicly accessible interactive website now includes nutrient management. Zoom in with the + button to see runoff risk and groundwater risk areas. Parcel boundary and non agricultural areas will also be shown.
GIS Interactive Mapping
The Department of Agriculture has a nutrient management application site as well.
DATCP Interactive Mapping

Runoff Risk Map Website (Dept. of Ag)

The Runoff Risk Advisory Forecast map shows day-to-day risk of runoff occurring across Wisconsin using National Weather Service forecaset methods that consider precipitation, soil moisture and individual basin characteristics.

Manure spreading decisions should be made with consideration of this tool to avoid unneccesary pollution of nearby surface water and groundwater and loss of valuable nutrients for your crops.