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About the Forecast & Instructions

The Michigan EnviroImpact tool shows daily runoff risk across Michigan using National Weather Service information about precipitation, temperature, soil moisture, and landscape characteristics.

Click on a location on the map to determine the potential risk of runoff from manure application.

Click on "Tutorials" at the top of the webpage for detailed instructions on how to use this tool.

Questions or Concerns? Click on the "Contact/Help" link at the top of this webpage.

Login & Alert Information

Click the “Login” located at the top of this webpage to create and access a personal account. Locate and save farm fields to quickly and easily determine runoff risk at any time. Manage your runoff risk alerts through an account.

Want to receive alerts for runoff risks without creating an account? Click here to create email alerts:

Map Layers and Future Runoff Forecasts

How Do I Use This Map?

About this Map

Using this Map

Asses the Risk for Each Field Before an Application

Data is typically updated daily in the morning. You can view when the last update was made by looking at the lower left-hand corner of the map.

Keep in mind that there is more uncertainty in precipitation and temperature forecasts (and subsequent runoff risk predications) as you look further ahead into the future.

Resources for Manure Applications

Selecting the best site or farm field to apply manure is a very important part of your farm’s manure management plan. Time spent up front determining crop nutrient needs and selecting the best fields to receive manure could result in increased crop production, efficient use of time and equipment, prevention of manure nutrient losses from the field (via leaching or runoff) and potentially improved neighbor relations. Producers are encouraged to use the following resources and evaluate their own land application sites to better understand the strengths and weaknesses of those fields.

Find additional resources here.

Frequently asked questions: click here.

Educational Materials

Promotional Documents

Post Card

Fact Sheet

YouTube Videos

User's Guide

Managing Manure Application

Webinar Recording

Website Partners & Sponsors



General Questions:
Jason Piwarski, MSU Institute of Water Research
Phone: 517-432-7582
Shelby Burlew, MSU Extension
Phone: 517-439-9301 Ext. 315
Erica Rogers, MSU Extension
Phone: 989-875-5233 Ext. 5296

General Manure/Nutrient Management questions:
Shelby Burlew, MSU Extension
Phone: 517-439-9301 Ext. 315
Erica Rogers, MSU Extension
Phone: 989-875-5233 Ext. 5296

Website Technical Assistance:
Jason Piwarski
Insititute of Water Research, Michigan State University

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