Upwind Report

Glyphosate use in Kiowa County, Colorado

Estimated farm glyphosate use in Kiowa County, Colorado was 227 pounds per square mile of county land in 2019, higher than 76% of US counties.

Map of Kiowa 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 land227lbTop 24% in the US
US
706th of 3,060
Colorado
6th of 63
Per square mile of cropland491lb

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

Since 2000

Up from 12 in 2000 to 227 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
20009.612
20011717
20021717
20035053
20045555
20055858
20069595
2007107107
2008100100
2009126126
2010164164
2011183183
2012167167
2013169169
2014156158
2015216216
2016204204
2017210210
2018171171
2019227227
See Kiowa 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 Kiowa 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.