Upwind Report

Glyphosate use in Warren County, Ohio

Estimated farm glyphosate use in Warren County, Ohio was 168 pounds per square mile of county land in 2019, higher than 70% of US counties.

Map of Warren County, Ohio 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 land168lbTop 30% in the US
US
914th of 3,060
Ohio
37th of 88
Per square mile of cropland217lb

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

Since 2000

Up from 92 in 2000 to 168 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
20008792
2001115115
20027878
2003115115
2004114114
2005123123
2006141141
20079191
2008113113
2009141141
2010149154
2011180180
2012158158
2013251251
2014277277
2015215215
2016245249
2017151151
2018156156
2019168168
See Warren 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 Warren County, Ohio 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.