Upwind Report

Glyphosate use in Emmet County, Iowa

Estimated farm glyphosate use in Emmet County, Iowa was 409 pounds per square mile of county land in 2019, higher than 90% of US counties.

Map of Emmet County, Iowa 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 land409lbTop 10% in the US
US
292nd of 3,060
Iowa
48th of 99
Per square mile of cropland423lb

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

Since 2000

Up from 88 in 2000 to 409 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
20008888
2001127127
2002194194
2003277277
2004315321
2005282282
2006348348
2007437437
2008536536
2009465465
2010542542
2011531531
2012554554
2013592592
2014625631
2015570575
2016542542
2017547547
2018448448
2019409409
See Emmet 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 Emmet County, Iowa 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.