Upwind Report

Glyphosate use in Trempealeau County, Wisconsin

Estimated farm glyphosate use in Trempealeau County, Wisconsin was 147 pounds per square mile of county land in 2019, higher than 67% of US counties.

Map of Trempealeau 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 land147lbTop 33% in the US
US
996th of 3,060
Wisconsin
26th 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 Trempealeau County against the US county median, with the source, to post or send.

Since 2000

Up from 37 in 2000 to 147 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
20003337
20014545
20025454
20037983
20049191
2005107107
20068383
2007111111
2008119119
2009107107
2010181186
2011131135
2012152152
2013135135
2014143143
2015123123
2016159159
2017172172
2018168168
2019147147
See Trempealeau 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 Trempealeau 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.