Agriculture Water Quality

The goal of this study was to improve understanding of the factors that influence runoff generation during non-frozen ground periods in small agricultural watersheds in southwestern Wisconsin where the landscapes are controlled by dolostone bedrock in order to provide agricultural producers with a manure management tool.

Farms near Lake Michigan in Manitowoc County, Wisconsin were facing a tough question: how much are agricultural fields contributing to water quality problems in the lake? Algae blooms in nearby bays were raising concerns, and phosphorus from farm fields was suspected as a key factor. To get real answers, Discovery Farms partnered with Saxon Homestead Farm (SHF), a fifth-generation, pasture-based dairy operation, to monitor water quality from 2004 to 2007.

Do you know how much soil and phosphorus is leaving your fields during a rain event, or how much difference your tillage choices make from one year to the next? A seven-year study by Discovery Farms set up water quality monitoring stations at the edges of fields across two western Wisconsin watersheds to answer those exact questions with real numbers from real farms.

Farming on steep, hilly land is tough. Keeping soil and nutrients out of nearby streams is even tougher. But data from Bragger Family Dairy in Buffalo County, Wisconsin shows it can be done, and the lessons from this farm still matter today.