Upwind Report

Glyphosate use in Bon Homme County, South Dakota

Estimated farm glyphosate use in Bon Homme County, South Dakota was 307 pounds per square mile of county land in 2019, higher than 83% of US counties.

Map of Bon Homme County, South Dakota 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 land307lbTop 17% in the US
US
503rd of 3,060
South Dakota
17th of 66
Per square mile of cropland337lb

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

Since 2000

Up from 119 in 2000 to 307 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
2000119119
2001109114
2002156161
2003197197
2004218218
2005192192
2006270270
2007213213
2008322332
2009312317
2010364364
2011452457
2012427427
2013442447
2014416421
2015468468
2016515520
2017328328
2018385385
2019307307
See Bon Homme 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 Bon Homme County, South Dakota 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.