Upwind Report

Glyphosate use in King William County, Virginia

Estimated farm glyphosate use in King William County, Virginia was 124 pounds per square mile of county land in 2019, higher than 64% of US counties.

Map of King William County, Virginia 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 land124lbTop 36% in the US
US
1,088th of 3,060
Virginia
16th of 97
Per square mile of cropland348lb

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

Since 2000

Up from 24 in 2000 to 124 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
20002024
20016165
20029999
20037173
20047373
20058787
2006111111
20076868
2008110136
20099898
2010117117
2011134138
20127979
2013101101
2014252252
2015227227
2016152152
20177979
2018171171
2019124124
See King William 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 King William County, Virginia 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.