Manure Spreading Advisory (MSA)

The following Manure Spreading Advisory (MSA) should be used in conjunction with your Nutrient Management Plan and application guidance to help you determine when applying manure is advisable.It is your responsibility to use this information appropriately, and in conjunction with other risk management practices to avoid a runoff event. If the risk is high, don't apply!

Consider these questions before you apply manure:

Click on your farm location on the map below to receive the runoff risk rating for your specific area and access the Field Risk Assessment Worksheet.

Click here if accessing map from a MOBILE device

Click here for a LARGER map

If you see a security warning message below where the map should be, please click on it to allow access. You should only have to do that once to override the warning.

Click HERE for more weather information

Risk is based on the 72 hour precipitation forecast for a given area. This value best predicts the potential risk associated with movement of manure applied to a field.

This advisory is the first step in assessing if your field conditions are suitable for manure application and should be followed up with observation of your field characteristics to determine if manure application is appropriate at any time of the year. In some cases, even when the advisory is med-high, you may have individual fields that can be applied to because they are low risk. The ARM worksheet will help you take the next step to assess the risk associated with application to individual fields.

This map is most useful when used in conjunction with the Application Risk Management system. If the risk rating for your location allows manure application, follow up by filling out the ARM Worksheet to see if application for a specific field is okay. For more information, talk to your local nutrient management planner.

Need to spread on a higher risk day to avoid a lagoon breach? First, contact your planner for local advice, then click here and follow these steps.


Please note, even if this map says your risk is low, it cannot account for every variable or condition present on your field. It is your responsibility to use your best judgment and adhere to all application guidelines outlined in your plan. Always err on the side of caution to prevent unwanted discharges. Manure application practices that cause a discharge can lead to fines and/or necessitate a CAFO permit for your facility. The contents of this webpage and its creators assume no responsibility for inappropriate manure application. Proper application is ultimately your responsibility.