Upwind Report

Glyphosate use in Nez Perce County, Idaho

Estimated farm glyphosate use in Nez Perce County, Idaho was 73 pounds per square mile of county land in 2019, higher than 55% of US counties.

Map of Nez Perce County, Idaho 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 land73lbTop 45% in the US
US
1,365th of 3,060
Idaho
8th of 44
Per square mile of cropland171lb

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

Since 2000

Up from 4.8 in 2000 to 73 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
20004.84.8
20017.27.2
20022729
20031922
20041919
20052443
20062431
20078484
20084848
20095356
20105858
20114646
20126368
20136060
20144848
2015123123
2016114114
20179797
2018150150
20197373
See Nez Perce 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 Nez Perce County, Idaho 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.