Upwind Report

Glyphosate use in Winnebago County, Wisconsin

Estimated farm glyphosate use in Winnebago County, Wisconsin was 163 pounds per square mile of county land in 2019, higher than 69% of US counties.

Map of Winnebago County, Wisconsin and nearby counties, coloring each county's cropland by estimated farm glyphosate use per square mile of county land in the 2019 high estimate. Darker colors mean more use.

2019 numbers

Per square mile of county land163lbTop 31% in the US
US
938th of 3,060
Wisconsin
23rd of 72
Per square mile of cropland206lb

Ranks are by use per square mile of county land, on the 2019 high estimate, among US counties with a value. Counties with the same value share a rank.

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A picture of Winnebago County against the US county median, with the source, to post or send.

Since 2000

Up from 46 in 2000 to 163 in 2019. Pounds per square mile of county land, high estimate.

Every year's numbers
Glyphosate per square mile of county land by year, in pounds
YearLowHigh
20004646
20015151
20024141
20035555
20045964
20057878
20069696
2007105109
2008155155
2009137142
2010160160
2011204209
2012127127
2013181181
2014145145
2015208208
2016190190
2017204204
2018194194
2019163163
See Winnebago County on the map

About these numbers

The main number is the county's estimated farm glyphosate use for the year divided by all of its land, water left out. A county with a little farmland can use a lot per square mile of cropland and still have far less in total than a county with more farmland, so the whole-county number is the one the map colors, ranks and compares.

These are county estimates, not records. They don't show which fields were sprayed or how much any one field got.

USGS makes a low and a high estimate, which fill in use that farms didn't report in different ways.

Per square mile of cropland is the same total spread evenly over the county's cropland only, so it's higher than the whole-county number wherever only part of Winnebago County, Wisconsin is farmland.

Numbers are in pounds per square mile. The source gives kilograms per square kilometer, and 1 kg per km² is about 5.7 pounds per square mile.

Source: Hengl & Brungard from USGS county estimates, 2000–2019 (CC BY 4.0). Land area: US Census Bureau, 2020.

This page shows estimated farm use only. It says nothing about health and is not medical advice.