Upwind Report

Glyphosate use in Brown County, Illinois

Estimated farm glyphosate use in Brown County, Illinois was 217 pounds per square mile of county land in 2019, higher than 76% of US counties.

Map of Brown County, Illinois 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 land217lbTop 24% in the US
US
733rd of 3,060
Illinois
81st of 102
Per square mile of cropland308lb

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 97 in 2000 to 217 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
20009797
2001121121
2002109109
2003169169
2004137137
2005157157
2006157161
2007161165
2008245250
2009218218
2010197201
2011205205
2012266266
2013298306
2014205205
2015261261
2016290290
2017205205
2018201205
2019217217
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, Illinois 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.