Upwind Report

Glyphosate use in Clay County, Illinois

Estimated farm glyphosate use in Clay County, Illinois was 361 pounds per square mile of county land in 2019, higher than 87% of US counties.

Map of Clay 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 land361lbTop 13% in the US
US
386th of 3,060
Illinois
55th of 102
Per square mile of cropland417lb

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.

Share image

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

Since 2000

Up from 124 in 2000 to 361 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
2000119124
2001164164
2002174179
2003278283
2004188188
2005268268
2006258258
2007288303
2008431436
2009417417
2010442447
2011351351
2012471476
2013529534
2014435435
2015331331
2016450450
2017485490
2018351356
2019361361
See Clay 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 Clay 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.