ODA Plant Programs, Insect Pest Prevention and Management Oregon Grasshopper Maps

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ODA Plant Programs, Insect Pest Prevention and Management

Oregon Grasshopper Maps

We summarize our grasshopper survey data using several different maps. These are presented below for your viewing and download. If you have questions please contact the Eastern Oregon Entomologist, Paul Blom at pblom@oda.state.or.us.

Grasshopper Density per square yard at surveyed locations:

Grasshopper Density Map
Grasshopper Density Map (pdf, 258 KB)

Grasshopper Economic Density per square yard by the Economic Threshold:

Grasshopper Economic Map
Grasshopper Economic Map (pdf, 258 KB)

Infestation Acreage of Grasshopper Densities per square yard classified by the Economic Threshold (>7):

Grasshopper Economic Acreage Map
Grasshopper Economic Acreage Map (pdf, 254 KB)
Counties Ranked by Economic Infestation
Counties Ranked by Economic Infestation (pdf, 156 KB)

Historic Grasshopper Maps:

Oregon grasshopper infestations since 1953
Oregon grasshopper Infestations since 1953 (pdf, 295 KB)

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