By Naomi Nakagaki and David M. Wolock
U.S. GEOLOGICAL SURVEY
Open-File Report 2005-1188
Sacramento, California 2005
ONLINE ONLY
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Abstract
Introduction
Background
Purpose and Scope
Acknowledgments
GIS Datasets
Drainage Basin Boundaries
Land Cover
30-Meter Resolution
1-Kilometer Resolution
County Agricultural Pesticide Use
Estimating Agricultural Pesticide Use in Drainage Basins
Basin Pesticide Use Estimated from the 1-Kilometer Resolution Land Cover Dataset
Steps to Generate a 1-Kilometer Resolution Pesticide Use Grid
Steps to Estimate the Basin Pesticide Use Using a 1-Kilometer Resolution Pesticide Use Grid
Basin Pesticide Use Estimated from the 30-Meter Resolution Land Cover Dataset
Results
Which Resolution is the Most Appropriate for Estimating Agricultural Pesticide Use in Drainage Basins?
Limitations of the Agricultural Pesticide Use Estimates in Drainage Basins
Other Applications of the Methods
Future Directions
Summary
Endnotes
References Cited
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