Upwind Report

Glyphosate use in Douglas County, Washington

Estimated farm glyphosate use in Douglas County, Washington was 85 to 87 pounds per square mile of county land in 2019, higher than 57% of US counties.

Map of Douglas 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 land85 to 87lbTop 43% in the US
US
1,292nd of 3,060
Washington
10th of 39
Per square mile of cropland206 to 211lb

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

Since 2000

Up from 34 in 2000 to 87 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
20003434
20013434
20024650
20032123
20043232
20054575
20064343
20074343
20084343
20093030
20105353
20115252
20129393
20134949
20144949
20154040
20166166
20177577
20185252
20198587
See Douglas 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 Douglas 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.