Upwind Report

Glyphosate use in Clay County, Minnesota

Estimated farm glyphosate use in Clay County, Minnesota was 362 to 367 pounds per square mile of county land in 2019, higher than 87% of US counties.

Map of Clay County, Minnesota 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 land362 to 367lbTop 13% in the US
US
373rd of 3,060
Minnesota
21st of 87
Per square mile of cropland383 to 388lb

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

Since 2000

Up from 5.4 in 2000 to 367 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
20005.45.4
20018181
20024343
20038792
2004168168
2005168168
2006157157
2007211211
2008244249
2009309309
2010417417
2011357357
2012536536
2013422427
2014492492
2015395400
2016405405
2017497497
2018368368
2019362367
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, Minnesota 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.