First Advisor

Geoffrey Duh

Date of Award


Document Type


Degree Name

Master of Science (M.S.) in Geographic Information Science






This practicum draws from experience working as an intern for The Freshwater Trust (an environmental nonprofit organization based in Portland, Oregon) from June to December of 2022. The work performed in this internship involved the delineation of agricultural fields using ArcGIS Online, an online collaborative mapping tool, as well as identifying and assigning irrigation type attributes on the Oregon-Idaho border along the Snake River, and the Deschutes Basin.

The purpose of this practicum project is to create a generalized guide for the delineation of agricultural fields and identification of irrigation type using a standard operating procedure for GIS interns, mapathon events, and other collaborative VGI scenarios in ArcGIS Online . This guide draws from identification techniques learned from unpublished training documentation at The Freshwater Trust and builds on them using additional identification techniques and independently devised operating procedures. This will contribute to the practice of GIScience by providing users a document with interpretation guides and standardized procedures. The interpretation guides will allow users to independently identify features while working remotely, reducing the amount of time spent using non-synchronous communication to answer questions. The standardized operating procedures will help users produce more consistent results as they will be referring to a structured system to guide their decision making process.


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A GIS practicum report submitted in partial fulfillment of the requirements for the degree of Master of Science In Geographic Information Science.

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