Upwind Report

Glyphosate use in Yuma County, Colorado

Estimated farm glyphosate use in Yuma County, Colorado was 219 pounds per square mile of county land in 2019, higher than 76% of US counties.

Map of Yuma County, Colorado 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 land219lbTop 24% in the US
US
730th of 3,060
Colorado
7th of 63
Per square mile of cropland468lb

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

Since 2000

Up from 21 in 2000 to 219 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
20001821
20013737
20026573
20038997
2004101104
2005101101
2006138140
2007138138
2008101101
2009128128
2010214214
2011258258
2012231231
2013202202
2014187190
2015209209
2016213213
2017226226
2018216216
2019219219
See Yuma 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 Yuma County, Colorado 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.