Upwind Report

Glyphosate use in Lewis County, Kentucky

Estimated farm glyphosate use in Lewis County, Kentucky was 78 pounds per square mile of county land in 2019, higher than 56% of US counties.

Map of Lewis County, Kentucky 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 land78lbTop 44% in the US
US
1,332nd of 3,060
Kentucky
49th of 120
Per square mile of cropland348lb

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

Since 2000

Up from 5.2 in 2000 to 78 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
20003.95.2
20012.63.9
20025.26.5
20032.63.9
20041012
20057.89.1
20065.25.2
20077.87.8
20087.87.8
20091617
20101414
20119.010
20123940
20132020
20145151
20151919
20163131
20176465
20181013
20197878
See Lewis 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 Lewis County, Kentucky 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.