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The purpose of the California Weed Mapping Handbook is to provide resources and methods for field collection of weed observation and monitoring data that can be analyzed and shared. This is the second edition of the California Weed Mapping Handbook, first published in 2002. Materials found here are intended for weed managers looking for help designing a monitoring and data collection program as well as trainers seeking materials for weed mapping workshops. Please also see About the 2002 California Weed Mapping Handbook.



Mapping weeds using a Trimble GPS datalogger 		Contents of this Website

How to Map Weeds
This section is intended for weed managers and has materials for managing a weed mapping and monitoring effort, including helpful information about planning the monitoring program and tools to get you started.

The ROAST Data Model
This section is intended for data managers and describes a content and structural standard for all levels of weed mapping, from early detection to ongoing monitoring.

Important Concepts
A reference library for the materials above, and you can get at these pages quickly from here.

Sources
The original materials drawn upon and referenced herein.