Upwind Report

Glyphosate use in Clarendon County, South Carolina

Estimated farm glyphosate use in Clarendon County, South Carolina was 173 pounds per square mile of county land in 2019, higher than 70% of US counties.

Map of Clarendon County, South Carolina 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 land173lbTop 30% in the US
US
891st of 3,060
South Carolina
5th of 46
Per square mile of cropland343lb

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

Since 2000

Up from 74 in 2000 to 173 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
20006974
20017777
20028083
200398110
2004113113
2005172175
2006150153
2007196196
20088282
2009257257
2010152152
2011297294
2012223223
2013138138
2014196199
2015130130
2016158161
2017187187
2018118118
2019173173
See Clarendon 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 Clarendon County, South Carolina 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.