Upwind Report

Glyphosate use in Whitman County, Washington

Estimated farm glyphosate use in Whitman County, Washington was 375 to 379 pounds per square mile of county land in 2019, higher than 88% of US counties.

Map of Whitman County, Washington 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 land375 to 379lbTop 12% in the US
US
351st of 3,060
Washington
2nd of 39
Per square mile of cropland474 to 480lb

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

Since 2000

Up from 63 in 2000 to 379 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
20006363
20018181
2002118118
2003190195
20046368
20053659
20068585
2007103103
20089494
20099999
20108585
2011170170
2012121121
2013166170
2014229229
2015175175
2016211211
2017158158
2018226226
2019375379
See Whitman 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 Whitman County, Washington 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.