Upwind Report

Glyphosate use in Brown County, Wisconsin

Estimated farm glyphosate use in Brown County, Wisconsin was 114 pounds per square mile of county land in 2019, higher than 63% of US counties.

Map of Brown 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 land114lbTop 37% in the US
US
1,132nd of 3,060
Wisconsin
33rd of 72
Per square mile of cropland143lb

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 Brown County against the US county median, with the source, to post or send.

Since 2000

Up from 28 in 2000 to 114 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
20002828
20014242
20022828
20033737
20045661
20055661
20067474
20077474
2008116116
20098893
2010130130
2011170170
20129797
2013156161
2014138138
2015174174
2016142142
2017151151
2018119119
2019114114
See Brown 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 Brown 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.