Upwind Report

Glyphosate use in Winona County, Minnesota

Estimated farm glyphosate use in Winona County, Minnesota was 186 pounds per square mile of county land in 2019, higher than 72% of US counties.

Map of Winona County, Minnesota 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 land186lbTop 28% in the US
US
841st of 3,060
Minnesota
52nd of 87
Per square mile of cropland280lb

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.

Share image

A picture of Winona County against the US county median, with the source, to post or send.

Since 2000

Up from 42 in 2000 to 186 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
20004242
20013034
20024953
20039191
20048383
20057680
2006106110
2007136140
2008140148
2009141141
2010183183
2011167167
2012194194
2013186186
2014136144
2015189189
2016170170
2017167170
2018155155
2019186186
See Winona 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 Winona County, Minnesota 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.