Working with Linear Referencing and Routes for Streams

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Linear Referencing allows us to take a set of separate linear features that share the same value such as a stream name, and convert them into one continuous feature, usually referred to as a “route,” with a measurement system that has a logical beginning and logical end with known values. Common examples of this are river-mile measurements along streams or milepost along highways. Once this measurement system is set, we can then work with tables that relate events to positions along that route based on measure values. These events can be either point events with a single measure value or linear events with a from-measure value and a to-measure value. Using routes is a very efficient way to manage multiple sets a data linked to linear features and to perform analysis. The presentation will discuss Linear Reference concepts, how to create routes, and provide some analysis examples using stream data from the Wenatchee National Forest.

When: 
October 16, 2013 - 3:30pm - 5:00pm
Room: 
Homestead 1
Presenter(s): 
John Schaeffer, Juniper GIS Services, Inc