Upwind Report

Glyphosate use in Glenn County, California

Reported farm glyphosate use in Glenn County, California was 153 pounds per square mile of county land in 2019, higher than 68% of US counties.

Map of Glenn County, California and nearby counties, coloring each county's cropland by estimated farm glyphosate use per square mile of county land in 2019 reported use. Darker colors mean more use.

2019 numbers

Per square mile of county land153lbTop 32% in the US
US
976th of 3,060
California
10th of 56
Per square mile of cropland411lb

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

Since 2000

Up from 14 in 2000 to 153 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
20001414
20015252
20027272
20036262
20046464
20056868
20069191
2007112112
20086969
2009102102
2010111111
2011134134
20129999
2013134134
2014116116
2015123123
2016144144
2017149149
2018145145
2019153153
See Glenn 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.

California's numbers are the state's own reported use, which USGS uses in place of an estimate, so the low and high numbers are the same.

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 Glenn County, California 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.